Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1635635 | Transactions of Nonferrous Metals Society of China | 2016 | 8 Pages |
Abstract
In order to improve the discharge capacity and cyclic life of Mg–Co-based alloy, ternary Mg45M5Co50 (M=Pd, Zr) alloys were synthesized via mechanical alloying. TEM analysis demonstrates that these alloys all possess body-centered cubic (BCC) phase in nano-crystalline. Electrochemical experiments show that Mg45Zr5Co50 electrode exhibits the highest capacity (425 mA·h/g) among the Mg45M5Co50 (M=Mg, Pd, Zr) alloys. And Mg45Pd5Co50 electrode lifts not only the initial discharge capacity (379 mA·h/g), but also the discharge kinetics, e.g., exchange current density and hydrogen diffusion ability from that of Mg50Co50. It could be concluded that the electrochemical performances were enhanced by substituting Zr and Pd for Mg in Mg–Co-based alloy.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Le-yu ZHAN, Yao ZHANG, Yun-feng ZHU, Xiang-yang ZHUANG, Neng WAN, Yi QU, Xin-li GUO, Jian CHEN, Zeng-mei WANG, Li-quan LI,