Method to improve the properties of La-Mg-Ni hydrogen storage electrode alloys

被引：0

作者：

An, Fuqiang ^{[1
]}

Li, Ping ^{[1
]}

Qu, Xuanhui ^{[1
,2
]}

Zheng, Xueping ^{[1
]}

机构：

[1] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

[2] State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China

来源：

Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | 2008年 / 30卷 / 03期

关键词：

Electrochemical properties - Electrochemistry - Electrodes - Melting - Spark plasma sintering - Vacuum;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The electrode alloy La0.7Mg0.3Ni2.5Co0.5 prepared by the spark plasma sintering (SPS) technology was used to investigated the improvement in electrochemical properties of La-Mg-Ni hydrogen storage alloys. The experimental results indicated that the maximum discharge capacities of the electrode alloys respectively prepared by SPS and vacuum medium-frequency induction melting were close. Using the SPS technology would decrease the weakening rate of capacity of the electrode alloy. After 150 cycles, the retention rate of capacity was 61.8% for the SPS technology, but 39.6% for the induction melting method. At the same time, the SPS technology would also increase the discharge medium voltage, broaden the discharge platform, and decrease the gradient of the platform.

引用

页码：263 / 266

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