Research on the performance of electrolyte leakage power-based supercapacitor

doi:10.12028/j.issn.2095-4239.2018.0040

Abstract

Abstract: With the excellent energy density and power density, power-based supercapacitor has been regarded as the most important devices for energy storage and saving system. After simulated the electrolyte leakage situation, using the commercial power-based supercapacitor as the target, the comparison between leakage and no-leakage electrolyte cells have been analyzed, and its high temperature accelerated life test also been discussed. It shows that silver crystal appears, and once the leakage amount is more than 12 g, cell's capacitance and ESR will decrease dramatically. When the amount is over 28.5 g, cell's capacitance and ESR will drop off near 12.1% and 31.3%, respectively. The accelerated life test (Cap-4) also revealed that the over leakage cell will represent more gas release times, and its capacitance will decrease 38.4% and ESR reaches 85.1%.

Key words: supercapacitor, leakage, failure mode, electrochemical performance

CLC Number:

TK53

YANG Bin, DING Sheng, FU Guansheng, WANG Chengyang, RUAN Dianbo, LIU Qiuxiang. Research on the performance of electrolyte leakage power-based supercapacitor[J]. Energy Storage Science and Technology, 2018, 7(4): 661-666.

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