Self-discharge of lithium-ion capacitors

被引：20

作者：

Babu, Binson ^{[1
]}

Balducci, Andrea ^{[1
]}

机构：

[1] Friedrich Schiller Univ Jena, Inst Tech Chem & Environm Chem, Ctr Energy & Environm Chem Jena CEEC Jena, Philosophenweg 7a, D-07743 Jena, Germany

来源：

JOURNAL OF POWER SOURCES ADVANCES | 2020年 / 5卷

关键词：

Lithium-ion capacitors; Self-discharge; Float test; Activated carbon; Gradient concentration; HIGH-ENERGY DENSITY; ELECTROCHEMICAL CAPACITORS; CHARGE REDISTRIBUTION; NEGATIVE ELECTRODES; SOFT CARBON; SUPERCAPACITORS; PERFORMANCE; ELECTROLYTES; MECHANISMS; STABILITY;

D O I：

10.1016/j.powera.2020.100026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work we report a detailed investigation about the self-discharge of lithium-ion capacitors (LICs). To date, this process has been only marginally investigated. However,the understanding of the dynamics of the self-discharge taking place in LICs appear of importance in view of the optimization of their performance. We showed that LIC display a rather high self-discharge, comparable to that of electrochemical capacitor, and that the main responsible for this process is the positive electrode. Furthermore, we demonstrated that the use of repeated float tests is affecting the self-discharge of LICs, and that after 50-100 h at high voltage their self-discharge is significantly reduced.

引用

页数：6

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