La_(0.7)Mg_(0.3-x)Ti_xNi_(2.8)Co_(0.3)(x=0.03,0.06,0.09,0.12)合金的储氢与电化学性能研究

Study on the hydrogen storage and electrochemical properties of La_(0.7)Mg_(0.3-x)Ti_xNi_(2.8)Co_(0.3)(x=0.03,0.06,0.09,0.12) alloys

用高频感应熔炼方法制备了La0.7Mg0.3-xTixNi2.8Co0.3(x=0.03,0.06,0.09,0.12)系列合金,并对其储氢和电化学性能进行测试.结果表明x=0.06时,合金储氢性能最好,气态储氢容量达1.2wt%,放电容量和比容量分别为336 mA.h.g-1,70.0%.

Hydrogen storage alloys, La0.7Mg0.3-xTixNi2.8Co0.3（x=0.03,0.06,0.09,0.12）, were prepared by induction melting and hydrogen storage and electrochemical properties of the alloys were investigated. The results were found that for the alloys,La0.7Mg0.3-xTixNi2.8 Co0.3 has better hydrogen storage and electrochemical properties, the hydrogen storage capacity, discharge capacity and ratio capacity is 1.2wt%,336 mA · h· g^-1and 70.0%, respectively.