Study of Electrochemical Properties of the Hydride Alloy Electrode ZrCr_0.4Mn_0.2V_0.1Co_0.1Ni_1.2 at High Temperature

Authors

Song LI, Institute of Materials and Technology, Dalian Maritime University, Dalian 116026, ChinaFollow
Shi-jun JI, Institute of Materials and Technology, Dalian Maritime University, Dalian 116026, China
Jun-cai SUN, Institute of Materials and Technology, Dalian Maritime University, Dalian 116026, China

Corresponding Author

Song LI(lisong516@yahoo.com.cn)

Abstract

Electrochemical properties of the hydride alloy electrode ZrCr_0.4Mn_0.2V_0.1Co_0.1Ni_1.2 at the different temperature have been investigated. The results showed that the alloy electrodes possessed the maximum discharge capacities 336 mAh/g and 298 mAh/g at 25 ℃ and 70 ℃ respectively. The activation process of the alloy at 70 ℃ became faster, and the alloy reached its maximum capacity in less than 4 cycles, while in 13 cycles at 25 ℃. The high rate capability increased from 55 % at 25 ℃ to 71% at 70 ℃ at 300 mA/g. It was worth noting that the alloys at 25 ℃ and 70 ℃ exhibited an excellent cycle stability. The formation of the oxide film on the alloy particle surface prohibited the dissolution of the elements of the alloy during the charging-discharging process.

Keywords

Hydride electrode alloy, High temperature, Activity, Self-dischargeability, Cycle life

DOI Link

https://doi.org/10.61558/2993-074X.1550

Publication Date

2004-02-28

Online Available Date

2004-02-28

Revised Date

2003-10-20

Received Date

2003-07-09

Recommended Citation

Song LI, Shi-jun JI, Jun-cai SUN. Study of Electrochemical Properties of the Hydride Alloy Electrode ZrCr_0.4Mn_0.2V_0.1Co_0.1Ni_1.2 at High Temperature[J]. Journal of Electrochemistry, 2004 , 10(1): 81-86.
DOI: 10.61558/2993-074X.1550
Available at: https://jelectrochem.xmu.edu.cn/journal/vol10/iss1/14