摘要
测定了ＭＭＮｉ５基贮氢合金的电极特性。用快淬法制成的ＭＭ（０．９）Ｔｉ（０．１）Ｎｉ（３．９）Ｍｎ（０．４）Ｃｏ（０．４）Ａｌ（０．３）贮氢合金电极的循环寿命和快速放电能力显著提高，其３００次充放电循环后电容量仅下降１８％，这与合金中微晶组织的形成有关，而感应熔炼制成的ＭＭ（０．９）Ｔｉ（０．１）Ｎｉ（３．９）Ｍｎ（０．４）Ｃｏ（０．４）Ａｌ（０．３）贮氢合金电极２００次循环后电容量下降３９％，经１０００℃３ｈ退火后，其３００次循环后电容量下降为２７％。
he electrode characteristics of MMNi5 based hydrogen storage alloys were examined. The cycle cifetime and high rate dischargeability of MM(0.9) Ti(0.1) Ni(3.9) Mn(0.4) Co(0.4) Al(0.3) alloy prepared by rapid quenching technique has been improved obviously, the decay in capacity was only 18% after 300 cydes. This was associated with the formed ultrafine crystalline microstructures. Wereas MM(0. 9) Ti(0.1) Ni(3.9) Mn(0.4) Co(0.4) Al(0.3) alloy prepared by induction melting and rapid cooling showed 39% decay in capacity after 200 cydes. After annealing it was 27% after 300 cycles.
出处
《稀土》
EI
CAS
CSCD
1995年第4期6-8,共3页
Chinese Rare Earths
关键词
储氢合金
循环寿命
快速放电能力
电极特性
Hydrogen storage alloys cycle lifetime
High rate dischargeability.
