Abstract
This has been done using the 60 Ah nickel-hydrogen cell to investigate the temperature effects on properties of aerospace nickel hydrogen cells. The charge-discharge, trickle charge, overcharge, self-discharge and cycle life tests were carried out at different temperatures. The results show that the discharge capacity and overcharge rate were increased first, and then decreased with the raising temperature. On the other hand, the trickle charge value and the 3 days self-discharge rate were raised with increasing temperature. When the temperature was -5 oC, the discharge capacity of cell reached the maximum discharge capacity of 63.68 Ah. Based on the test results, the approximate functions among the discharge capacity, trickle charge rate, overcharge rate, self-discharge rate and temperature can be described. The battery lifetime results at 80% DOD and -15 oC indicate no apparent battery deterioration even after 3000 cycles. When the lifetime operating at 80% DOD and 25 oC, the cut-off voltage for end discharge of the cell dropped to 0.8 V and the battery failed. Based on the related references and EIS results, it was concluded that the temperature increase resulted in oxygen electrode potential drop, and the early start of oxygen evolution at charge and nickel plate pulverized, which markedly speeds up the cell performance degradation at life cycling.
Graphical Abstract
Keywords
aerospace nickel hydrogen cell, temperature, electrochemical property
Publication Date
2016-02-29
Online Available Date
2015-11-11
Revised Date
2015-11-09
Received Date
2015-07-20
Recommended Citation
Hai-chang ZHANG, Yu-qi DIAO, Wen-cheng MING, Xue-ying REN, Fei DING.
Temperature Effects on Properties of Aerospace Nickel Hydrogen Cells[J]. Journal of Electrochemistry,
2016
,
22(1): 49-56.
DOI: 10.13208/j.electrochem.150720
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol22/iss1/5
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