Journal
JOURNAL OF POWER SOURCES
Volume 196, Issue 1, Pages 573-579Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2009.12.028
Keywords
Double layer capacitor; Supercap; Self-discharge; Model; Voltage decay
Funding
- E.ON International Research Initiative
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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. (C) 2009 Elsevier B.V. All rights reserved.
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