Study on the measurement methods for the DC internal resistance of lithium-ion capacitors

doi:10.12028/j.issn.2095-4239.2018.0108

Energy Storage Science and Technology ›› 2018, Vol. 7 ›› Issue (6): 1242-1247.doi: 10.12028/j.issn.2095-4239.2018.0108

Study on the measurement methods for the DC internal resistance of lithium-ion capacitors

WANG Jing^1,2, GAO Hongbo³, HU Daozhong³, WEI Sanping², ZHENG Lihua², ZHAO Yunpeng², ZHONG Ming⁴, BURKE Andrew F⁵, LI Linghong^1,2

1. DAE Innovation(Beijing) Technologies, Inc., Beijing 100071, China;
2. Shanxi DAE Technologies, Inc., Changzhi 046000 Shanxi, China;
3. China North Vehicle Research Institute, Beijing 100072, China;
4. ChangzhiInstitute of Scientific and Technical Information, Changzhi 046000, Shanxi, China;
5. University of California Davis, Davis, CA 95616

Received:2018-06-29 Revised:2018-07-26 Online:2018-11-01 Published:2018-10-19
Contact: 10.12028/j.issn.2095-4239.2018.0108

Abstract

Abstract: Lithium-ion capacitor (LIC) is a new energy storage device that combines the advantages of lithium-ion battery and supercapacitor. Internal resistance under direct current (DC Resistance or DCR) is one of the most important electrochemical parameters for evaluating the performance of supercapacitors. However, there is no standard method for measuring and evaluating the internal resistance of LIC. This study tested and compared LIC devices using three different testing procedures and calculation methods for DCR. Comparison of internal resistance using initial voltage drop at 100ms to that of other methods indicates that this method provides consistent results and the value of resistance may be close to the true stead-state resistance.

Key words: lithuium-ion capacitors, resistant, charging and discharging test procedure, calculation methods, cut-off voltage

CLC Number:

WANG Jing, GAO Hongbo, HU Daozhong, WEI Sanping, ZHENG Lihua, ZHAO Yunpeng, ZHONG Ming, BURKE Andrew F, LI Linghong. Study on the measurement methods for the DC internal resistance of lithium-ion capacitors[J]. Energy Storage Science and Technology, 2018, 7(6): 1242-1247.

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Study on the measurement methods for the DC internal resistance of lithium-ion capacitors

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