Development of V-based high capacity, high durability protium storage alloys for fuel cell vehicles.

为了实现氢社会，发展高容量效率和高耐久性的储氢方法是当务之急。储氢合金以其体积效率而闻名，但其在低温下的不良脱附特性和耐久性有待改进。通过本研究，制备出了具有高有效循环氚容量（约2。3质量%）、高耐久性（在200次循环后保持99%的初始容量）和良好的氢解吸特性（0. 2Mpa at-30 ℃）。截至2011财年，这些合金保持了最先进的性能。

For implementation of hydrogen society, development of high volume efficient and high durability hydrogen storage method is the most urgent issue. Hydrogen (protium)storage alloys are known for its volume efficiency but their poor desorption characteristics at cold temperature and durability should be improved. Through this research, V-rich V-Ti-Cr-M(M=Al, Mo)with high effective cyclic protium capacity (about 2. 3mass%), high durability (maintaining 99%of initial capacity after 200 cycles)and good hydrogen de sorption characteristics (0. 2Mpa at-30degree Celsius). These alloys are holding state of the art performance as of Fy2011.