热处理对La_(0.6)Ce_(0.4)(NiCoMn_(0.1)Al_(0.08))_5合金电化学性能的影响  

Effect of Heat Treatment on Electrochemical Performances of La_(0.6)Ce_(0.4)(NiCoMn_(0.1)Al_(0.08))_5 Hydrogen Storage Alloy

作　　者：肖方明[1] 周顺[1] 唐仁衡[1] 王英[1] 孙泰[1] 

机构地区：[1]广东省工业技术研究院(广州有色金属研究院)稀有金属研究所,广州510650

出　　处：《材料导报（纳米与新材料专辑）》2014年第1期187-189,共3页

基　　金：广州市珠江科技新星专项(2011J2200033);广东省战略性新兴产业核心技术攻关项目(2011A091105001)

摘　　要：研究了La0.6Ce0.4(NiCoMn0.1Al0.08)5储氢合金热处理前后的电化学性能,并通过恒流充放电测试对其性能进行表征。结果表明:经过热处理的快淬合金具有较好的综合电化学性能,当放电电流密度为250mA/g时,合金的放电容量达到320.85mAh/g;当放电电流密度为715mA/g时,合金的循环寿命为357次;当放电电流密度为1200mA/g时,合金的高倍率放电性能达到76.34%,优于未经过热处理的合金。The electrochemical properties of La0.6Ce0.4（NiCoMn0.1Al0.08）5 hydrogen storage alloy before and after heat treatment were studied,and the alloys were characterized by constant current charge-discharge test. The resuits show that this rapid quenching alloy has a good overall electrochemical properties after heat treatment, when the discharge current density is 250 mA/g, the discharge capacity of the alloy reached 320. 85 mAh/g. When the discharge current density is 715 mA/g, the cycle life of the alloys is 357. When the discharge current density is 1200 mA/ g, the high rate discharge performance（HRD） of alloy reaches up to 76.34%. This is better than that without heat treatment.

关 键 词：镍氢电池 镧铈合金 热处理 电化学性能 

分 类 号：TG139.7[一般工业技术—材料科学与工程]