Improved dehydrogenation cycle performance of the 1.1MgH2-2LiNH2-0.1LiBH4 system by addition of LaNi4.5Mn0.5 alloy
作者： Wang ZHAO , Lijun JIANG , Yuanfang WU , Jianhua YE , Baolong YUAN
DOI: 10.1016/S1002-0721(14)60485-3
关键词:
摘要: Abstract The isothermal desorption kinetics of the 1.1MgH 2 -2LiNH -0.1LiBH 4 system were improved by addition LaNi 4.5 Mn 0.5 alloy. hydrogen peak temperature sample containing reduced approximately 5 K and activation energy 9%. results dehydrogenation analysis implied that process at initial stage was controlled phase boundary mechanism. Moreover, cycle performance materials extended. growth agglomeration particles caused deterioration during de-/hydrogenation cycles, then resulted in an incomplete desorption/absorption reaction which responsible for capacity fading. cracking pulverization alloy had obvious effect on preventing composites aggregating, fine could enhance catalytic alloy, thus effectively offsetting part growth.
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