AB_3型储氢合金复合电极材料制备及电化学性能  

Preparation and Electrochemical Performance of AB_3 Type Hydrogen Storage Composite Electrode Material

作　　者：刘毅[1] 王一菁[1] 肖玲玲[1] 曹建胜[1] 焦丽芳[1] 冯艳[1] 袁华堂[1] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071

出　　处：《南开大学学报（自然科学版）》2006年第3期29-33,共5页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(20573058;50571046);国家重点研究开发规划项目(G2000026405);国家"863"计划(2001AA5150222)

摘　　要：以La_2Mg_(17)作为中间合金采用熔炼法成功制备了AB_3型合金La_(0．7)Mg_(0．3)Ni_(2．875)Co_(0．525)Mn_(0．1),与球磨法制得的NiB进行不同比例的复合．对合金复合前后的电化学容量、循环寿命、高倍率放电以及电化学交流阻抗(EIS)进行了测试,结果表明储氢材料经NiB复合后,合金电极循环稳定性明显提高,但是其最高放电容量有所降低；高倍率放电能力增强,抗腐蚀性能增强．The ABs type hydrogen storage alloys La0.7Mg0.3Ni2.875Co0.525Mn0.1;were successful synthesized by means of inter-media alloy La2Mg17. The alloys was composited with NiB at different weight rate. Electrochemical discharge capacity, cycle life, high rate discharge ability and exchange impendence spectroscopy （EIS） of the AB3 alloys and its composite were tested. It showed that the cycle stability and the high discharge capacities of the composited alloys were improved distinctly, and the large discharge capacity were decreased.

关 键 词：AB3型储氢合金 复合材料 电化学性能 交流阻抗(EIS) 

分 类 号：O646[理学—物理化学]