Macroscopic indicators of fault diagnosis and ageing in electrochemical double layer capacitors

被引：25

作者：

Torregrossa, Dimitri ^{[1
]}

Toghill, Kathryn E. ^{[2
,3
]}

Amstutz, Veronique ^{[2
]}

Girault, Hubert H. ^{[2
]}

Paolone, Mario ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Distributed Elect Syst Lab, Lausanne, Switzerland

[2] Ecole Polytech Fed Lausanne, Lab Phys & Analyt Electrochem, Lausanne, Switzerland

[3] Univ Lancaster, Dept Chem, Lancaster, England

来源：

JOURNAL OF ENERGY STORAGE | 2015年 / 2卷

关键词：

Supercapacitors; Fault diagnosis; Recovering phase; Accelerated ageing phase;

D O I：

10.1016/j.est.2015.05.001

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The ageing behaviour of electric double layer (EDLC) supercapacitors during over-temperature and over-voltage stresses is described. Specific experimental tests were carried out in order to reproduce, under laboratory controlled conditions, the above-mentioned stresses. The obtained results are discussed and interpreted to define indicators that distinguish between over-temperature and over-voltage faults occurring in these devices. For each stress type post-mortem examinations of the EDLCs were performed to observe any specific physical damage. These examinations have been used to define the fundamental assumptions of the proposed fault indicators. Three fault indicators were identified and related to the evolution of the following SC parameters: (i) the equivalent series resistance, (ii) capacitance and (iii) decay voltage during the relaxation phase. Additionally, new accelerated ageing and recovering phases were detected during combined high-pulsed power cycling and life endurance stresses. (C)2015 Elsevier Ltd. All rights reserved.

引用

页码：8 / 24

页数：17

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