Nanostructure analysis of hydrogen storage material by In-sit neutron small angle scattering

• Project/Area Number: 25790080
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Ibaraki University
• Principal Investigator: Iwase Kenji 茨城大学, 工学部, 准教授 (00524159)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 水素貯蔵材料 / 中性子小角散乱 / In-situ測定 / 中性子散乱 / 小角散乱 / 中性子 / 水素貯蔵 / ナノ構造

Outline of Final Research Achievements

In order to clarify the nanostructure change of hydrogen absorbing alloy during hydrogen absorption-desorption process, we attempt to establish In-situ measurement by neutron small angle scattering. We made a new sample holder for In-situ measurement. The quartz glass with 2mm thick was used as window material with transmission neutron beam. We carried out In-situ measurement of Pr-Mg-Ni ternary alloy at room temperature. The small angle scattering spectrum of the full hydride increased in comparison with the original alloy. The slope of the full hydride decreased the q(nm-1) between 0.6 and 1.0 and the fractal dimension of the particle surface clearly changed with increasing hydrogen content.

Research Products

• [Journal Article] Structural change of NdNi3 during hydrogen absorption-desorption cycle (2016)
  • Author(s): Kenji Iwase, Kazuhiro Mori, Suguru Tashiro, Hitoshi Yokota,Tetsuya Suzuki
  • Journal Title: International Journal of Hydrogen Energy Volume: 41 Pages: 3940-3945
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Effect of Mg substitution on hydrogen absorptionedesorption behavior and crysta structure of Gd2-xMgxNi7 (2016)
  • Author(s): Kenji Iwase, Naoyoshi Terashita, Kazuhiro Mori, Suguru Tashiro,Hitoshi Yokota, Tetsuya Suzuki
  • Journal Title: International Journal of Hydrogen Energy Volume: 41 Pages: 1074-1079
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Effects of Mg substitution on crystal structure and hydrogenation properties of Pr1-xMgxNi3 (2014)
  • Author(s): 1.Kenji Iwase, Naoyoshi Terashita, Kazuhiro Mori, Suguru Tashiro, Hitoshi Yokota, Tetsuya Suzuki,
  • Journal Title: Int. J. Hydrogen Energy Volume: 39 Pages: 12773-12777
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] Mg置換によるGd-Mg-Ni合金の水素吸蔵放出特性 (2014)
  • Author(s): 岩瀬謙二
  • Organizer: 金属学会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2014-09-23 – 2014-09-25
• [Presentation] Ce2Ni7-type構造のGd-Ni2元系合金の結晶構造と水素吸蔵放出特性
  • Author(s): 岩瀬謙二
  • Organizer: 金属学会
  • Place of Presentation: 金沢大学
• [Presentation] In-situ neutron measurement of hydrogen absorbing alloy
  • Author(s): 岩瀬謙二
  • Organizer: Thermec2013
  • Place of Presentation: Rio Hotel, Las Vegas, USA
  • Invited