研究者データベース

中川 祐貴(ナカガワ ユウキ)
工学研究院 附属エネルギー・マテリアル融合領域研究センター 量子エネルギー変換材料分野
助教

基本情報

所属

  • 工学研究院 附属エネルギー・マテリアル融合領域研究センター 量子エネルギー変換材料分野

職名

  • 助教

学位

  • 博士(工学)(北海道大学)

科研費研究者番号

  • 00787153

J-Global ID

研究キーワード

  • メカノケミストリー   水素貯蔵   リチウムイオン伝導   イオン照射   レーザー照射   表面改質   エネルギー変換材料   錯体水素化物   窒化ホウ素   アンモニアボラン   アルミニウム水素化物   ナノ粒子   光触媒   透過型電子顕微鏡   電子エネルギー損失分光   その場観察   

研究分野

  • ナノテク・材料 / 構造材料、機能材料

職歴

  • 2018年03月 - 現在 北海道大学(助教)
  • 2016年10月 - 2018年02月 北海道大学(特任助教)
  • 2015年04月 - 2016年09月 北海道大学 (日本学術振興会 特別研究員)

学歴

  • 2011年04月 - 2016年03月   北海道大学 大学院工学院 材料科学専攻
  • 2007年04月 - 2011年03月   北海道大学 工学部 応用理工系学科

所属学協会

  • 日本顕微鏡学会   日本金属学会   日本MRS水素科学技術連携研究会   応用物理学会   

研究活動情報

論文

  • Yuki Nakagawa, Yuya Hayashi, Subing Yang, Tamaki Shibayama
    Vacuum 206 111519  2022年09月 [査読有り]
  • Subing Yang, Yuki Nakagawa, Tamaki Shibayama
    Applied Surface Science 591 153087 - 153087 2022年07月 [査読有り]
  • Subing Yang, Yuki Nakagawa, Tamaki Shibayama
    Applied Surface Science 579 152163 - 152163 2022年03月 [査読有り]
  • Shuntaro Murakami, Lihua Zhang, Melbert Jeem, Kazumasa Okamoto, Yuki Nakagawa, Tamaki Shibayama, Masato Ohnuma, Seiichi Watanabe
    Optical Materials 124 111966 - 111966 2022年02月 [査読有り]
  • Keita Shinzato, Yuki Nakagawa, Subing Yang, Shigehito Isobe, Tamaki Shibayama, Hiroki Miyaoka, Takayuki Ichikawa
    ACS Applied Energy Materials 5 1 951 - 957 2022年01月 [査読有り]
     
    Titanium (Ti) absorbs hydrogen (H2) with the reaction enthalpy of −142 kJ/mol H2, which is larger than that of the reaction between magnesium and H2. Therefore, the Ti–H2 system is a promising system as thermochemical heat storage for high temperature with high energy density. In order to realize the Ti–H2 system as a thermochemical heat storage, the reaction kinetics of the hydrogen absorption must be improved. It is previously reported that Ti can absorb H2 even at room temperature, when the Ti surface was modified by graphite. However, the reactivity of Ti with H2 was lost after the dehydrogenation due to the transformation of the modified surface to titanium carbide. The modified surface with high thermal stability is required to obtain high cycle performance of the hydrogen absorption/desorption. In this work, hexagonal boron nitride (h-BN) was investigated as an agent for the surface modification of Ti. The Ti modified by h-BN can absorb approximately 3 wt % of H2 at 40 °C within 10 min. In addition, the functional surface was kept even after the dehydrogenation at 580 °C. By the microscopic analyses, it was found that the turbostratic BN and nitride phases are formed on the Ti surface, showing the selective hydrogen absorption effects. Thus, the robust surface of Ti with high reactivity for H2 was obtained by using the surface modification using h-BN.
  • Yuki Nakagawa, Tomoharu Kimura, Takao Ohki, Shigehito Isobe, Tamaki Shibayama
    Solid State Ionics 365 115656 - 115656 2021年07月 [査読有り]
  • Subing Yang, Yuki Nakagawa, Minako Kondo, Tamaki Shibayama
    Acta Materialia 211 116845  2021年06月 [査読有り]
     
    Irradiation-induced anisotropic swelling in hexagonal alpha-SiC is known to degrade the mechanical properties of SiC; however, the associated physical mechanism and microstructural process remain insufficiently understood. In this study, an anisotropic swelling condition where the surface normal direction was allowed to freely expand with constraint in the lateral direction was introduced in 4H-SiC using selected-area He+ irradiation, and the internal defect distribution was investigated using transmission electron microscopy (TEM) and advanced scanning TEM. The defect distribution was compared to that in non-selected-area He+-irradiated 4H-SiC and electron-irradiated TEM-foil 4H-SiC. An anisotropic defect distribution was observed in the selected-area He+-ion-irradiated 4H-SiC, with interstitial defects preferentially redistributed in the surface normal direction ([0 004]) and negative volume defects (such as vacancies and/or carbon antisite defects) dominantly located in the lateral directions ([11 (2) over bar0] and [10 (1) over bar0]). This anisotropy of the defect distribution was substantially lower in the non-selected-area He+-irradiated and electron-irradiated samples. The stress condition in the three samples was also measured and analyzed. In the selected-area He+-irradiated 4H-SiC, compressive stress was introduced in the lateral directions (([10 (1) over bar0] and [11 (2) over bar0])), with little stress introduced in the surface normal direction ([0 004]); this stress condition was introduced at the beginning of ion irradiation. The compressive stress likely inhibits the formation of interstitial defects in the lateral directions, enhancing the anisotropy of the defect distribution in SiC. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
  • Keita Shinzato, Yuki Nakagawa, So Hamamoto, Yuya Hayashi, Hiroki Miyaoka, Shigehito Isobe, Tamaki Shibayama, Norio Ogita, Takayuki Ichikawa
    Chemical Communications 56 53 7237 - 7240 2020年07月 [査読有り][通常論文]
     
    Surface modification effects of graphite and organic solvents on Ti were investigated by thermogravimetry (TG), Raman spectroscopy, and transmission electron microscopy (TEM) observations to improve its hydrogen absorption properties. As a result, Ti ball-milled with graphite showed high reactivity and selectivity for hydrogen with high durability.
  • Yuki Nakagawa, Tomoharu Kimura, Shigehito Isobe, Tamaki Shibayama
    The Journal of Physical Chemistry C 124 19 10398 - 10407 2020年05月 [査読有り][通常論文]
  • Subing Yang, Yuki Nakagawa, Minako Kondo, Tamaki Shibayama
    Journal of Applied Physics 127 175106  2020年05月 [査読有り][通常論文]
  • F. Tanaka, Y. Nakagawa, S. Isobe, N. Hashimoto
    International Journal of Energy Research 44 4 2941 - 2951 2020年03月 [査読有り][通常論文]
  • T. Yamaguchi,, K. Shinzato, K. Yamamoto, Y. Wang, Y. Nakagawa, S. Isobe, To. Ichikawa, H. Miyaoka, T. Ichikawa
    International Journal of Hydrogen Energy 45 11 6806 - 6812 2020年02月 [査読有り][通常論文]
     
    In this work, nitrogenation, ammonia generation, regeneration reactions of lithium-tin alloy is investigated as pseudo catalytic process of ammonia synthesis. Li17Sn4 synthesized by thermochemical method at 500 °C can react with 0.1 MPa of N2 below 400 °C. Nano or amorphous lithium nitride would be formed by the nitrogenation. By reaction of the nitrogenated samples and H2, ammonia is generated at 300 °C under 0.1 MPa. The initial alloy phase Li17Sn4 is regenerated below 350 °C from the products after the ammonia generation process. Based on the above three step process, ammonia can be pseudo-catalytically synthesized from N2 and H2 below 400 °C under ambient pressure. Furthermore, the reactivity for the ammonia synthesis using Li–Sn alloy is preserved during the NH3 synthesis cycles due to the characteristic reaction process based on the Li extraction and insertion.
  • S. Yang, S. Tokunaga, M. Kondo, Y. Nakagawa, T. Shibayama
    Applied Surface Science 500 144051  2020年 [査読有り][通常論文]
  • C.H. Lee, Y. Nakagawa, S. Isobe, N. Hashimoto, S. Sugino, H. Miyaoka, T. Ichikawa
    Journal of Alloys and Compounds 801 645 - 650 2019年 [査読有り][通常論文]
     
    Sodium magnesium amidoborane, which can be regarded as one of the ammonia borane (NH BH ) based materials, has superior hydrogen storage properties. In this study, we investigated the hydrogen release process and ammonia absorption phase of sodium-magnesium amidoborane. The sodium-magnesium amidoborane was prepared by ball-milling of NH BH , MgH and NaNH with two kinds of molar ratios (NH BH : MgH : NaNH = 4:1:2 and 3:1:1). As a result, a single hydrogen release step from Na Mg(NH BH ) was clearly observed in the molar ratio (4:1:2), and multiple hydrogen release steps were observed in the molar ratio (3:1:1). The synthesized Na Mg(NH BH ) released hydrogen of 7.5 wt% in an endothermic reaction. Also, we found an ammonia absorption phase of Na Mg(NH BH ) by using sodium amide as a starting material. The Na Mg(NH BH ) absorbs 5 mol of ammonia in the form of solid as the pressure of ammonia gas reaches 100 kPa. After that, a total of 15 mol of ammonia is absorbed up to 600 kPa in the liquid phase. 3 3 3 3 2 2 3 3 2 2 2 2 3 4 2 2 3 4 2 2 3 4 2 2 3 4
  • Yuki Nakagawa, Chung-Hyun Lee, Kouki Matsui, Kohei Kousaka, Shigehito Isobe, Naoyuki Hashimoto, Shotaro Yamaguchi, Hiroki Miyaoka, Takayuki Ichikawa, Yoshitsugu Kojima
    Journal of Alloys and Compounds 734 55 - 59 2018年02月15日 [査読有り][通常論文]
     
    Hydrogen desorption properties of α-AlH3 doped with Nb species (Nb, Nb2O5 and NbF5) were investigated. Doping Nb species improved the desorption properties of AlH3. In particular, 1 mol% NbF5-doped AlH3 showed the lowest onset desorption temperature at 60 °C. Compared with Nb- or Nb2O5-doped AlH3, the fine distribution of dopant was successfully achieved in NbF5-doped AlH3. The apparent activation energy for hydrogen desorption of AlH3 was slightly decreased with the dopant of NbF5. The improvement of desorption properties might be due to the finely dispersed Nb and/or AlF3, which are formed by the reaction between NbF5 and AlH3 (surface Al2O3).
  • Yuki Nakagawa, Shigehito Isobe, Takao Ohki, Naoyuki Hashimoto
    Inorganics 5 4 71  2017年12月01日 [査読有り][招待有り]
     
    Hexagonal boron nitride (h-BN) is known as an effective additive to improve the hydrogen de/absorption properties of hydrogen storage materials consisting of light elements. Herein, we report the unique hydrogen desorption properties of LiAlH4/h-BN composites, which were prepared by ball-milling. The desorption profiles of the composite indicated the decrease of melting temperature of LiAlH4, the delay of desorption kinetics in the first step, and the enhancement of the kinetics in the second step, compared with milled LiAlH4. Li3AlH6 was also formed in the composite after desorption in the first step, suggesting h-BN would have a catalytic effect on the desorption kinetics of Li3AlH6. Finally, the role of h-BN on the desorption process of LiAlH4 was discussed by comparison with the desorption properties of LiAlH4/X (X = graphite, LiCl and LiI) composites, suggesting the enhancement of Li ion mobility in the LiAlH4/h-BN composite.
  • Shotaro Yamaguchi, Takayuki Ichikawa, Yongming Wang, Yuki Nakagawa, Shigehito Isobe, Yoshitsugu Kojima, Hiroki Miyaoka
    ACS Omega 2 3 1081 - 1088 2017年03月31日 [査読有り][通常論文]
     
    Lithium alloys are synthesized by reactions between lithium metal and group 14 elements, such as carbon, silicon, germanium, and tin. The nitrogenation and denitrogenation properties are investigated by thermal and structural analyses. All alloys dissociate the nitrogen triple bond of gaseous molecules to form atomic state as nitrides below 500 °C, which is lower than those required for conventional thermochemical and catalytic processes on nitride syntheses. For all alloys except for germanium, it is indicated that nanosized lithium nitride is formed as the product. The denitrogenation (nitrogen desorption) reaction by lithium nitride and metals, which is an ideal opposite reaction of nitrogenation, occurs by heating up to 600 °C to form lithium alloys. Among them, the lithium-tin alloy is a potential material to control the dissociation and recombination of nitrogen below 500 °C by the reversible reaction with the largest amount of utilizable lithium in the alloy phase. The nitrogenation and denitrogenation reactions of the lithium alloys at lower temperature are realized by the high reactivity with nitrogen and mobility of lithium. The above reactions based on lithium alloys are adapted to the ammonia synthesis. As a result, ammonia can be synthesized below 500 °C under 0.5 MPa of pressure. Therefore, the reaction using lithium alloys is recognized as a pseudocatalyst for the ammonia synthesis.
  • Yuki Nakagawa, Keita Shinzato, Tessui Nakagawa, Keita Nakajima, Shigehito Isobe, Kiyotaka Goshome, Hiroki Miyaoka, Takayuki Ichikawa
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42 9 6173 - 6180 2017年03月 [査読有り][通常論文]
     
    Na[Al(NH2BH3)(4)], a mixed-metal amidoborane, was synthesized by ball-milling (solid method) and the chemical reaction in THF (solution method). Solid method has a tendency to remain unreacted NaAlH4 and AB. In the solution method, the partial decomposition of Na[Al(NH2BH3)(4)] would proceed during mixing in THF. The local structural characterization of as-synthesized material was performed by MAS NMR and FT-IR. While Na[Al(NH2BH3)(4)] desorbed hydrogen in two steps as reported, the results of structural characterization suggested that the hydrogen desorption in the 2nd step would originate from the Al-N-B H phase. Effect of hydrogen pressure during ball-milling was also investigated for nNH(3)BH(3)-NaAlH4 (n = 1, 4) composites. In the case of n = 4, Na[Al(NH2BH3)(4)] was formed under both Ar and H-2 atmosphere. However, in the case of n =1, Na[Al(NH2BH3)(4)] only formed under H-2 atmosphere, whereas most of H-2 was desorbed during ball-milling under Ar atmosphere. Thus, the hydrogen pressure is necessary for the synthesis in the case of n = 1. Potential energy diagram of AB-NaAlH4 system was described. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
  • Yingqiong Yong, Mai Thanh Nguyen, Tetsu Yonezawa, Takashi Asano, Masaki Matsubara, Hiroki Tsukamoto, Ying-Chih Liao, Tengfei Zhang, Shigehito Isobe, Yuki Nakagawa
    JOURNAL OF MATERIALS CHEMISTRY C 5 5 1033 - 1041 2017年02月 [査読有り][通常論文]
     
    A method for producing Cu films with low resistivity, based on low temperature sintering, is demonstrated. The Cu inks for preparing conductive Cu films consisted of Cu particles that were coated with a decomposable polymer (poly(propylenecarbonate), PPC) as well as a self-reducible copper formate/1-amino-2- propanol (CuF-IPA) complex as an additive. The sintering temperature used in this study was as low as 100 degrees C. Following sintering at a temperature of 100 degrees C, the lowest reported resistivity (8.8 x 10(-7) Omega m) was achieved through the use of Cu-based metal-organic decomposition (MOD) inks. This was due to the dual promotional effects of the aminolysis of PPC with IPA and the pyrolysis of the CuF-IPA complex.
  • Tengfei Zhang, Yuki Nakagawa, Takenobu Wakasugi, Shigehito Isobe, Yongming Wang, Naoyuki Hashimoto, Somei Ohnuki
    ACS APPLIED MATERIALS & INTERFACES 8 23 14548 - 14551 2016年06月 [査読有り][通常論文]
     
    A window type of the environmental cell system for a high-voltage electron microscope was developed and applied to in situ observation of a palladium (Pd) thin film. For in situ hydrogenation of Pd thin films, the distances of the lattice fringes were 0.20 and 0.23 nm, which correspond to the lattice d spacings of beta-phase (200) and (111) planes. Expansion of the Pd lattice happened as a result of phase transformation from the alpha phase to the beta phase. In particular, the lattice fringes were clearly distinguished, and the dislocation behavior during Pd hydrogenation was easily recognized according to the corresponding inverse fast fourier transform images. Furthermore, significant growth in the number of dislocations was observed at the grain boundary during increasing hydrogen pressure in the cell.
  • Yuki Nakagawa, Tengfei Zhang, Masaumi Kitamura, Shigehito Isobe, Satoshi Hino, Naoyuki Hashimoto, Somei Ohnuki
    JOURNAL OF CHEMICAL AND ENGINEERING DATA 61 5 1924 - 1929 2016年05月 [査読有り][通常論文]
     
    The effects of metal-based additives in a wide range of elements doping into ammonia borane (AB) were systematically investigated. Pure transition metals in period 4 and total of 17 metal chlorides were selected as additives and ball-milled with AB. Metal chloride additives were effective to decrease H-2 desorption temperature and the amounts of by product gas emissions of AB, whereas pure transition metals did not show any ability because they did not work as Lewis acids. The strong correlation between H-2 desorption temperature and the Pauling electronegativity of metal (chi(p)) was observed. Mn+ of MCln would work as Lewis acid to initiate the AB dehydrocoupling reaction. The amount of NH3 emission was correlated with the ionic radius of M, suggesting MCln center dot mNH(3) complexes be formed in this system. AB-CuCl2 and AB-AgCl mixtures showed the similar H-2 desorption processes. The Cl-containing intermediate phase would destabilize AB during reaction.
  • 新里 恵多, 中川 祐貴, 礒部 繁人, 中川 鉄水, 中嶋 啓太, 五舛目 清剛, 宮岡 裕樹, 市川 貴之, 小島 由継
    日本エネルギー学会大会講演要旨集 25 260 - 261 一般社団法人 日本エネルギー学会 2016年 

    Ammonia borane (AB: NH3BH3) is a promising solid state hydrogen storage material because it contains >19 mass% of hydrogen. However, the thermal decomposition of AB kinetically requires high temperature, and considerable amount of harmful by-product gases emit from AB. Recently, the decomposition properties of AB have been improved by the composite with alanates (MAlH4, M = Na, Li). It was reported that the new compound NaAl(NH2BH3)4 formed during mechanical milling of 4AB-NaAlH4. In this work, we have tried to synthesize NaAl(NH2BH3)4 in THF solvent (Solution method) to obtain the single phase with high-purity. The powder X-ray diffraction pattern of the product obtained by the solution method was similar to that obtained by the solid method, suggesting that NaAl(NH2BH3)4 can be synthesized by the solution method as well. However, the 23Na-nuclear magnetic resonance (NMR) spectrum suggests that a different phases from NaAl(NH2BH3)4 coexist. Thus, in order to obtain the single phase of NaAl(NH2BH3)4, further optimization of reaction conditions would be necessary.

  • Keisuke Takahashi, Yuki Nakagawa, Lauren Takahashi, Shigehito Isobe
    NEW JOURNAL OF CHEMISTRY 40 9 7303 - 7306 2016年 [査読有り][通常論文]
     
    Key descriptors representing the desorption temperature of ammonia borane against hydrides and chlorides are investigated and applied to machine learning. The desorption temperature of ammonia borane with hydrides and chlorides is experimentally measured and a database is constructed. The database indicates a correlation between the desorption temperature and electronegativity. A support vector machine with selected descriptors from the database reveals the optimal amounts of CuCl2 and AgCl needed for decreasing the desorption temperature of ammonia borane. Prediction of the electronegativity that would achieve the desorption temperature is also revealed where the crystal structure is also found to be a key descriptor. Thus, electronegativity and crystal structures are revealed to be key descriptors that predict the desorption temperature of ammonia borane with a chemical compound. This would essentially lead towards finding the optimal amount of dopants and ideal dopants with a minimum number of experiments.
  • Keisuke Takahashi, Yongming Wang, Shotaro Chiba, Yuki Nakagawa, Shigehito Isobe, Somei Ohnuki
    SCIENTIFIC REPORTS 4 4598  2014年04月 [査読有り][通常論文]
     
    Hydrogenation of iron nanoparticles was performed both computationally and experimentally where previously chemically-bonded iron hydride is considered to be unachievable under ordinary conditions. Density functional theory (DFT) calculations predict that hydrogenated iron nanoparticles are stabilized on a single-layer graphene/Cu substrate. Experimentally, iron nanoparticles were deposited onto a graphene/Cu substrate by vacuum deposition. Hydrogenation was done at 1atm of hydrogen gas and under liquid nitrogen. Mass spectrometry peak confirmed the hydrogen release from hydrogenated iron nanoparticles while a scanning transmission electron microscopy is used in order to link a geometrical shape of iron hydride nanoparticles between experimental and theoretical treatments. The hydrogenated iron nanoparticles were successfully synthesized where hydrogenated iron nanoparticles are stable under ordinary conditions.
  • Y. Nakagawa, Y. Ikarashi, S. Isobe, S. Hino, S. Ohnuki
    RSC Advances 4 40 20626 - 20631 2014年 [査読有り][通常論文]
     
    Hydrogen desorption properties and decomposition processes of NH3BH3-MAlH4 (M = Na, Li) composites were investigated by using thermogravimetry-differential thermal analysis-mass spectrometry (TG-DTA-MS), powder X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses. We prepared the composites by ball-milling and the mixtures by hand-milling. The ball-milled composites desorbed 4-5 wt% hydrogen at three exothermic steps below 260 degrees C. The emissions of by-product gases, NH3, B2H6 and B3H6N3, were effectively suppressed. From XRD analysis, the formation of a mixed-metal (Na(Li), Al) amidoborane phase was suggested. Very different results were obtained using hand-milling. They showed only one exothermic reaction at 80-90 degrees C. The emission of by-product gases was not suppressed. By comparing the differences between ball-milled composites and hand-milled mixtures, the importance of mixed-metal amidoborane in this system was proposed.
  • Y. Nakagawa, S. Isobe, Y. Ikarashi, S. Ohnuki
    Journal of Materials Chemistry A 2 11 3926 - 3931 2014年 [査読有り][通常論文]
     
    Dehydrogenation properties of AB-MH (Ammonia Borane-Metal Hydride, M - K, Na, Li, Ca, Mg, Al) composites were systematically investigated by thermal and mass analyses. The results suggest that the Pauling electronegativity of M, chi(p), is a good indicator to predict the phases of composites, the dehydrogenation temperature and the amount of by-product gases (NH3 and B2H6). The phases of composites were classified by chi(p) as follows. MBH4 was formed for M = K, Na (chi(p) <= 0.9), MNH2BH3 was formed for M = Na, Li (0.9 <= chi(p) <= 1.0) and no new compounds were formed for M = Ca, Mg, Al (1.0 <= chi(p)). The 1st dehydrogenation temperatures of the samples (M = Na, Li, Ca, Mg) were 10-20 degrees C lower than that of AB itself (chi(p) <= 1.2). The amount of NH3 was decreased as chi(p) increased. On the other hand, the amount of B2H6 was decreased as chi(p) decreased. The emission of B3H6N3 could occur by the reaction of NH3 and B2H6. Finally, AB-MAlH4 (M = Na, Li) composites, which were prepared based on the indicator, showed superior potential as hydrogen storage materials because they did not desorb any by-products NH3, B2H6 and B3H6N3.
  • Yuki Nakagawa, Shigehito Isobe, Yongming Wang, Naoyuki Hashimoto, Somei Ohnuki, Liang Zeng, Shusheng Liu, Takayuki Ichikawa, Yoshitsugu Kojima
    JOURNAL OF ALLOYS AND COMPOUNDS 580 S163 - S166 2013年12月 [査読有り][通常論文]
     
    Dehydrogenation processes of alpha- and gamma-AlH3 were investigated by in situ transmission electron microscopy observations. The relationship between Al2O3 thickness and dehydrogenation kinetics was also clarified. The initial shape of alpha-AlH3 particle was cubic and that of gamma-AlH3 particle was rod-shaped. The process of gamma-AlH3 was quite similar with alpha-AlH3. The precipitation and growth of Al was observed in both processes. The dehydrogenation kinetics did not depend on Al2O3 thickness. It was found that milling effect on the dehydrogenation kinetics was larger than doping effect. The dehydrogenation process was discussed in terms of both microscopic and kinetic studies. (C) 2013 Elsevier B.V. All rights reserved.
  • Wei Sun, Yi Long, Song Fu, Yuki Nakagawa, Soumei Ohnuki, Fengxia Hu, Jun Shen
    IEEE TRANSACTIONS ON MAGNETICS 48 11 3746 - 3748 2012年11月 [査読有り][通常論文]
     
    The microstructure and magnetic properties for LaFe10.85 Co0.65Si1.5C0.2, LaFe11.5Si1.5C0.2 and LaFe10.85Co0.65Si1.5 compounds were investigated. The ingots were prepared by 5 kilogram Vacuum Induction Melting Furnace. Then LaFe10.85Co0.65Si1.5C0.2 and LaFe11.5Si1.5C0.2 thin strips were prepared by the strip-casting process. The DSC measurement shows that the maximum latent heat of LaFe11.5Si1.5C0.2 thin strips has been obtained after annealing at 1353 K for 12 h, longer time annealing seems to be no good for latent heat. Substitute Co for Fe could cause inhomogeneous distribution of Curie temperature (T-C) in the bulk ingots, but the inhomogeneity can be improved by preparing the strip from the ingot. Under magnetic field changes of 0-1.5 T, the magnetic entropy change near the Curie temperature was about -11.1 J/kg. K and -4.0 J/kg. K for LaFe11.5Si1.5C0.2 and LaFe10.85Co0.65Si1.5C0.2, respectively.

講演・口頭発表等

  • ミリング粉砕Fe-BN混合粉末の加熱TEMその場観察による微細組織変化
    中川祐貴, 岩田知紘, 柴山環樹, 竹口雅樹
    日本金属学会2022年秋期講演大会 2022年09月
  • LiBH4-ZrO2複合物質のLiイオン伝導度の評価と電子顕微鏡による微細組織の観察
    千藤翼, 中川祐貴, 柴山環樹
    日本金属学会2022年秋期講演大会 2022年09月
  • WO3光触媒によるローダミン6G分解とTEMによる微細構造観察
    白土泰裕, 中川祐貴, 柴山環樹
    日本金属学会2022年秋期講演大会 2022年09月
  • He+イオン照射による酸化銅の水中結晶光合成抑制効果
    佐藤祐, 中川祐貴, 柴山環樹
    日本金属学会2022年秋期講演大会 2022年09月
  • ミリング粉砕したFe-BN混合粉末への高温での電子線照射が熱分解に及ぼす影響
    岩田知紘, 中川祐貴, 柴山環樹, 竹口雅樹
    日本顕微鏡学会第78回学術講演会 2022年05月
  • アセトンとのミリングにより表面改質したチタンの水素吸蔵速度の向上と収差補正 STEM による顕微解析
    中川祐貴, 新里恵多, 宮岡裕樹, 礒部繁人, 柴山環樹, 荻田典男, 市川貴之
    令和3年度日本顕微鏡学会北海道支部学術講演会 2021年12月
  • 水素および希ガスイオン照射した酸化タングステン光触媒を用いた有機色素の分解
    中川祐貴
    第10回エネルギー・マテリアル融合領域シンポジウム「水素社会の実現に向けた要素技術の進展と展望」 2021年11月
  • 鉄ドープナノ構造窒化ホウ素の微細構造と水素吸蔵特性
    岩田知紘, 中川祐貴, 柴山環樹
    日本金属学会2021年秋期講演大会 2021年09月
  • 窒化ホウ素を添加したLiBH4-MgH2複合水素貯蔵材料の水素吸放出特性の評価
    三井明, 中川祐貴, 柴山環樹
    日本金属学会2021年秋期講演大会 2021年09月
  • レーザー照射した金属原子クラスターの透過電子顕微鏡による微視的観察
    澤田渉, 中川祐貴, 柴山環樹
    日本金属学会2021年秋期講演大会 2021年09月
  • ミリングによるLiAlH 4 のリチウムイオン伝導度向上と BN複合化による超イオン伝導特性の発現機構の検討
    中川祐貴, 礒部繁人, 柴山環樹
    日本金属学会2021年秋期講演大会 2021年09月
  • 水素および希ガスイオンを照射した酸化タングステンの表面ナノ構造変化の検討
    中川祐貴, 林雄也, Yang Subing, 柴山環樹
    第68回応用物理学会春季学術講演会 2021年03月
  • リチウム合金を用いた低圧アンモニア合成プロセス
    宮岡裕樹, 新里恵多, 上澤将大, 中川祐貴, 王永明, 礒部繁人, 市川貴之
    日本金属学会2021年春期講演大会 2021年03月
  • 層状化合物で表面処理したチタンの水素吸蔵特性
    新里恵多, 中川祐貴, 林雄也, 礒部繁人, 柴山環樹, 荻田典男, 宮岡裕樹, 市川貴之
    第40回水素エネルギー協会大会 2020年12月
  • 量子ビームと物質相互作用のオペランド観察 -複合量子ビーム超高圧電子顕微鏡の開発とその応用-
    柴山 環樹, Yang Subing, 中川 祐貴, 渡辺 精一
    日本顕微鏡学会第63回シンポジウム 2020年11月
  • ナノスケールでのイオン照射4H-SiCの残留弾性ひずみ評価
    ヤン スービン, 柴山 環樹, 中川 祐貴
    日本顕微鏡学会第63回シンポジウム 2020年11月
  • Heイオン照射した六方晶窒化ホウ素のルミネセンス解析
    林 時温, 中川 祐貴, 柴山 環樹
    日本顕微鏡学会第63回シンポジウム 2020年11月
  • チタンの水素吸蔵反応に及ぼす有機溶媒やグラファイトの表面改質効果
    新里 恵多, 中川 祐貴, 濱本 創, 林 雄也, 宮岡 裕樹, 礒部 繁人, 柴山 環樹, 荻田 典男, 市川 貴之
    日本金属学会2020年秋期講演大会 2020年09月
  • クロミック反応によるWO3の表面ナノ構造変化の検討
    林 雄也, 中川 祐貴, 柴山 環樹
    日本金属学会2020年秋期講演大会 2020年09月
  • イオン照射した六方晶窒化ホウ素のルミネセンス解析
    林 時温, 中川 祐貴, 柴山 環樹
    日本金属学会2020年秋期講演大会 2020年09月
  • 錯体水素化物のボールミル粉砕によるリチウムイオン伝導向上機構とBN添加物効果の検討
    木村 智遥, 澁屋 大地, 中川 祐貴, 柴山 環樹
    日本金属学会2020年秋期講演大会 2020年09月
  • Siイオン照射された4H-SiCにおける残留弾性ひずみの非破壊評価
    千田 雅也, Yang Subing, 柴山 環樹, 中川 祐貴, 林 慶知, 檜木 達也
    日本金属学会2020年秋期講演大会 2020年09月
  • リチウム合金による窒素解離と擬触媒的アンモニア合成
    宮岡裕樹, 市川貴之, 新里恵多, 山本恭平上澤将大, 中川祐貴, 礒部繁人, 王永明
    第29回日本エネルギー学会大会 2020年08月
  • リチウム合金を用いた窒素解離と擬触媒的アンモニア合成プロセス
    宮岡裕樹, 新里恵多, 田川賢太朗, Pankaj Kumar Singh, 魏弘之, 山本恭平, 上澤将大, 中川祐貴, 王永明, 礒部繁人, 市川貴之
    日本金属学会2020年春期講演大会 2020年03月
  • 有機物とのミリングにより表面改質したチタンの水素化速度の向上と収差補正STEMによる顕微解析
    中川祐貴, 新里恵多, 濱本創, 礒部繁人, 柴山環樹, 宮岡裕樹, 市川貴之
    日本金属学会2020年春期講演大会 2020年03月
  • 錯体水素化物・窒化ホウ素複合物質のリチウムイオン伝導度の評価
    中川祐貴, 木村智遥, 礒部繁人, 柴山環樹
    日本原子力学会北海道支部 第37回研究発表会 2020年02月
  • Siイオン照射した4H-SiC単結晶における残留弾性歪みのEBSDを用いた非破壊評価
    千田雅也, Yang Subing, 柴山環樹, 中川祐貴, 檜木達也
    令和元年度 日本金属学会 北海道支部冬季講演大会 2020年01月 口頭発表(一般)
  • Enhancement of Lithium Ion Conductivity of Complex Hydrides by Boron Nitride Additives
    Yuki Nakagawa, Tomoharu Kimura, Shigehito Isobe, Tamaki Shibayama
    1st International Symposium "Hydrogenomics" combined with 14th International Symposium Hydrogen&Energy 2020年01月 ポスター発表
  • 有機物とのミリングにより表面改質したチタンの水素化速度の向上と大気非曝露条件下でのTEM観察  [通常講演]
    中川祐貴, 新里恵多, 濱本創, 礒部繁人, 柴山環樹, 宮岡裕樹, 市川貴之
    日本顕微鏡学会 令和元年度北海道支部学術講演会 2019年12月 口頭発表(一般)
  • ボールミル処理を行った錯体水素化物LiAlH4のリチウムイオン伝導機構の検討  [通常講演]
    木村智遥, 中川祐貴, 柴山環樹
    日本顕微鏡学会 令和元年度北海道支部学術講演会 2019年12月 ポスター発表
  • LiAlH4/BN複合物質のリチウムイオン伝導度と水素放出特性  [通常講演]
    中川祐貴, 礒部繁人, 柴山環樹
    日本金属学会2019年秋期講演大会 2019年09月 口頭発表(一般)
  • Hydrogen desorption properties of hydride / hydroxide systems  [招待講演]
    Shigehito Isobe, Fuga Tanaka, Yuki Nakagawa, Naoyuki Hashimoto
    日本金属学会2019年秋期講演大会 2019年09月 口頭発表(招待・特別)
  • ラマン分光法によるSiC/SiC複合材料の微小ひずみ測定  [通常講演]
    成瀬統伍, 近藤美奈子, 中川祐貴, 中里直史, 岸本弘立, 柴山環樹
    日本金属学会2019年秋期講演大会 2019年09月 ポスター発表
  • TiO2単結晶基板上Au薄膜のフェムト秒レーザー照射によるAuナノ粒子化と局在プラズモン共鳴  [通常講演]
    帆足 勇之, 中川 祐貴, 柴山 環樹
    日本金属学会2019年秋期講演大会 2019年09月 ポスター発表
  • アルミニウム系水素貯蔵材料のTEM/STEMによる顕微解析  [招待講演]
    中川 祐貴
    第14回水素若手研究会 2019年09月 口頭発表(招待・特別)
  • 錯体水素化物/窒化ホウ素複合物質のリチウムイオン伝導機構解明とイオン伝導制御による水素放出速度改善
    中川祐貴
    第9回エネルギー・マテリアル融合領域シンポジウム[「2050年に向けたエネルギー・マテリアル研究」 2019年06月
  • Residual Strain Imaging of Ion Irradiated 4H-SiC  [通常講演]
    S. Yang, S. Tokunaga, M. Kondo, Y. Nakagawa, T. Shibayama
    10th International Conference on Materials for Advanced Technologies 2019年06月
  • 錯体水素化物/窒化ホウ素複合物質のSTEM-EDS, EELS解析  [通常講演]
    中川 祐貴, 礒部 繁人, 柴山環樹
    日本顕微鏡学会第75回学術講演会 2019年06月
  • LiAlH4/h-BN複合物質の水素放出機構の検討  [通常講演]
    中川 祐貴, 礒部 繁人, 柴山環樹
    日本金属学会2019年春期講演大会 2019年03月
  • NbF5の各種水素貯蔵材料に対する触媒作用の比較  [通常講演]
    石塚健, 礒部繁人, 橋本直幸, 中川祐貴, 史鏡明
    H30年度 日本顕微鏡学会 北海道支部学術講演大会 2019年01月
  • 軽金属水酸化物系の水素放出・吸蔵特性評価及び水素放出速度の向上  [通常講演]
    田中風雅, 礒部繁人, 中川祐貴, 橋本直幸
    H30年度 日本金属学会 北海道支部冬季講演大会 2019年01月
  • バースト試験により破断したSiC/SiC複合材料管の微細組織観察  [通常講演]
    成瀬統伍, 柴山環樹, 中川祐貴, 近藤美奈子, 岸本弘立
    H30年度 日本顕微鏡学会 北海道支部学術講演大会 2018年11月
  • 軽元素で構成される水素貯蔵材料の電子顕微鏡観察  [通常講演]
    中川祐貴, 柴山環樹
    H30年度 日本顕微鏡学会 北海道支部学術講演大会 2018年11月
  • Catalytic effect of niobium fluoride on a variety of hydrogen storage materials  [通常講演]
    Takeshi Ishizuka, Shigehito Isobe, Naoyuki Hashimoto, Yuki Nakagawa, Jingming Shi
    16th International Symposium on Metal-Hydrogen Systems 2018年10月
  • Hydrogen ab/desorption properties of light metal hydroxide systems  [通常講演]
    Fuga Tanaka, Shigehito Isobe, Yuki Nakagawa, Naoyuki Hashimoto
    16th International Symposium on Metal-Hydrogen Systems 2018年10月
  • Investigation on hydrogen release process of sodium-magnesium amidoborane  [通常講演]
    Chung-Hyun Lee, Yuki Nakagawa, Shigehito Isobe, Naoyuki Hashimoto
    16th International Symposium on Metal-Hydrogen Systems 2018年10月
  • Interaction between LiAlH4 and hexagonal boron nitride  [通常講演]
    Yuki Nakagawa, Shigehito Isobe, Takao Ohki, Naoyuki Hashimoto
    16th International Symposium on Metal-Hydrogen Systems 2018年10月
  • Non-destructive evaluation of He ion irradiation effects in α-SiC by Raman spectroscopy  [通常講演]
    Subing Yang, Sakiko Tokunaga, Yuki Nakagawa, Tamaki Shibayama
    14th Japan-China Symposium on Materials for Advanced Energy Systems and Fission&Fusion Engineering 2018年09月
  • エネルギー利用を目指した軽元素系水素化物の材料設計
    中川祐貴
    第8回エネルギー・マテリアル融合領域シンポジウム「鉄鋼プロセスとエネルギーの未来像」 2018年06月
  • h-BNを添加したLiAlH4の特異な水素放出特性  [通常講演]
    中川祐貴, 礒部繁人, 大木崇生, 橋本直幸
    水素化物に関わる次世代学術・応用展開研究会 2017年11月

受賞

  • 2022年09月 第16回水素若手研究会 ポスター発表優秀賞
     WO3光触媒によるローダミン6G分解及びTEMによる微細組織観察 
    受賞者: 白土泰裕;中川祐貴;柴山環樹
  • 2020年01月 1st International Symposium "Hydrogenomics" combined with 14th International Symposium Hydrogen&Energy Best Poster Award 2020
     Enhancement of Lithium Ion Conductivity of Complex Hydrides by Boron Nitride Additives
  • 2019年12月 日本顕微鏡学会 令和元年度 北海道支部学術講演会 北海道支部長賞
     ボールミル処理を行った錯体水素化物LiAlH4のリチウムイオン伝導機構の検討 
    受賞者: 木村智遥;中川祐貴;柴山環樹
  • 2019年12月 令和元年度 日本顕微鏡学会 北海道支部学術講演会 北海道支部長賞
     有機物とのミリングにより表面改質したチタンの水素化速度の向上と大気非曝露条件下でのTEM観察
  • 2019年01月 日本金属学会 北海道支部講演大会 奨励賞
     軽金属水酸化物系の水素放出・吸蔵特性評価及び水素放出速度の向上 
    受賞者: 田中風雅;礒部繁人;中川祐貴;橋本直幸
  • 2018年11月 16th International Symposium on Metal-Hydrogen Systems Excellent Poster Award
     Hydrogen ab/desorption properties of light metal hydroxide systems 
    受賞者: Fuga Tanaka;Shigehito Isobe;Yuki Nakagawa;Naoyuki Hashimoto
  • 2016年03月 14th USTB&HU Academic Symposium Best Poster Presentation
     Hydrogen desorption properties of NbF5-doped AlH3
  • 2015年12月 日本金属学会 北海道支部講演大会 奨励賞
     NaAlH4-NH3BH3複合物質の水素放出特性
  • 2014年08月 水素若手研究会 優秀ポスター賞
     グラフェン上の鉄ナノ粒子の水素吸蔵 ~DFT計算と放出実験~
  • 2014年07月 日本金属学会 北海道支部講演大会 奨励賞
     メタルアラネートと複合化処理したアンモニアボランの水素放出プロセスの検討

共同研究・競争的資金等の研究課題

  • 水素吸蔵金属へのレーザードーピングによる選択的水素透過能の付与
    日本学術振興会:若手研究
    研究期間 : 2021年04月 -2024年03月 
    代表者 : 中川祐貴
  • メカノケミカル反応を用いた低温アンモニア合成
    北海道ガス:大学研究支援制度
    研究期間 : 2021年04月 -2022年03月 
    代表者 : 中川祐貴
  • 格子欠陥レベルで拡散経路を壅蔽する新奇酸化抑制機構の解明
    日本学術振興会:挑戦的研究(萌芽)
    研究期間 : 2019年06月 -2022年03月 
    代表者 : 柴山 環樹、中川祐貴
  • 複合量子ビーム超高圧電子顕微鏡を用いた金属原子クラスターのレーザー水素化実験
    日本顕微鏡学会:長舩記念特別研究奨励金
    研究期間 : 2020年04月 -2021年03月 
    代表者 : 中川祐貴
  • 錯体水素化物のリチウムイオン伝導機構解明とそれに基づく水素吸放出特性の改善
    日本学術振興会:若手研究
    研究期間 : 2019年04月 -2021年03月 
    代表者 : 中川 祐貴
  • イオン照射した酸化タングステンロッドの量子ビーム解析: クロミック反応機構の検討
    北海道大学大学院工学研究院附属エネルギー・マテリアル融合領域研究センター:若手研究員等研究助成
    研究期間 : 2019年04月 -2020年03月 
    代表者 : 中川 祐貴
  • 錯体水素化物/窒化ホウ素複合物質のリチウムイオン伝導機構解明とイオン伝導制御による水素放出速度改善
    北海道大学大学院工学研究院附属エネルギー・マテリアル融合領域研究センター:若手研究員等研究助成
    研究期間 : 2018年04月 -2019年03月 
    代表者 : 中川 祐貴
  • 準安定錯体水素化物を用いた高機能水素貯蔵材料の創製
    北海道ガス:大学研究支援制度
    研究期間 : 2017年04月 -2018年03月 
    代表者 : 中川祐貴
  • アンモニアボラン・金属新規水素貯蔵物質の第一原理計算と実験による探索
    日本学術振興会:特別研究員奨励費
    研究期間 : 2015年04月 -2017年03月 
    代表者 : 中川 祐貴

大学運営

委員歴

  • 2019年04月 - 現在   日本顕微鏡学会北海道支部   幹事


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