Detailed Analysis of the Self-Discharge of Supercapacitors

Journal of Power Sources 2011
Julia Kowal, Esin Avaroglu, Fahmi Chamekh, Armands Šenfelds, Tjark Thien, Dhanny Wijaya, Dirk Uwe Sauer

Self-discharge is an important performance factor when using supercapacitors. Voltage losses in the range of 5-60% occur over two weeks. Experiments show a dependency of the self-discharge rate on various parameters such as temperature, charge duration and short-term history. In this paper, self-discharge of three commercially available supercapacitors was measured under various conditions. Based on different measurements, the impact of the influence factors is identified. A simple model to explain parts of the voltage decay is presented.

Keywords
Double layer capacitor; Model; Self-discharge; Supercap; Voltage decay
DOI
10.1016/j.jpowsour.2009.12.028
Hyperlink
http://www.sciencedirect.com/science/article/pii/S0378775309022897

Kowal, J., Avaroglu, E., Chamekh, F., Šenfelds, A., Thien, T., Wijaya, D., Sauer, D. Detailed Analysis of the Self-Discharge of Supercapacitors. Journal of Power Sources, 2011, Vol.196, Iss.1, pp.573-579. ISSN 0378-7753. Available from: doi:10.1016/j.jpowsour.2009.12.028

Publication language
English (en)