Title :
Understanding the ageing process, recovering phase and fault diagnosis of electrochemical double layer capacitors
Author :
Torregrossa, Dimitri ; Toghill, Kathryn E. ; Girault, Hubert H. ; PAOLONE, MARIO
Author_Institution :
Distrib. Electr. Syst. Lab., Swiss Fed. Inst. of Technol. in Lausanne, Lausanne, Switzerland
Abstract :
This paper focuses on the description of the behavior of supercapacitors during over-temperature and over-voltage stresses and the consequent ageing processes. Specific physical evidences supporting the explanation of the experimental findings are provided and discussed in the paper. A method to distinguish between over-temperature and over-voltage post-faults of these storage devices is summarized and discussed. Additionally, new accelerated ageing phases and recovering phases are detected during combined high-pulsed Power Cycling and high-temperature Life endurance tests.
Keywords :
ageing; fault diagnosis; overvoltage; stress effects; supercapacitors; accelerated ageing phases; ageing processes; electrochemical double layer capacitors; fault diagnosis; high-pulsed power cycling; high-temperature life endurance tests; overtemperature stresses; overvoltage stresses; post-faults; recovering phases; storage devices; supercapacitors; Accelerated aging; Conductivity; Electrodes; Impurities; Stress; Temperature; Supercapacitors; accelerated ageing; ageing; fault diagnosis; recovering phase;
Conference_Titel :
Technologies for Sustainability (SusTech), 2014 IEEE Conference on
DOI :
10.1109/SusTech.2014.7046250
