Development of novel low material costs hydrogen storage material using nanometer-sized Mg cluster

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K21658
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials; Nanomaterials engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Asano Kohta 国立研究開発法人産業技術総合研究所, 創エネルギー研究部門, 主任研究員 (30415640)
• Research Collaborator: HAYASHI Shigenobu ; JIMURA Keiko ; KIM Hyunjeong ; SAKAKI Kouji ; DAM Bernard
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 水素貯蔵材料 / 核磁気共鳴法 / クラスター構造 / Mg水素化物

Outline of Final Research Achievements

Mg hydride which has the high volumetric density of hydrogen is an attractive option to store energy because of its light weight and low material costs. However, the Mg-H system has thermodynamic and kinetic limitations associated with hydrogen absorption and desorption processes: the high stability of the MgH2 phase and the slow diffusion of hydrogen in Mg and MgH2 at moderate temperatures and pressures. Nanometer-sized Mg hydride clusters may form in a self-organized way by the hydrogenation of a non-equilibrium Mg-Ti alloy. In this study we have synthesized Mg-Ti-X (X: Cr, Mn) and Mg-Fe-Si hydrides and the Mg hydride is destabilized by the interface energy.

Free Research Field

水素貯蔵材料、固体NMR、固体中の原子拡散