Journal
ELECTROCHIMICA ACTA
Volume 52, Issue 4, Pages 1563-1566Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2006.01.086
Keywords
self-discharge; TEGDME electrolyte; lithium/sulfur batteries; long-term storage
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We investigated self-discharge characteristics of Li/S batteries using tetra ethylene glycol dimethylether (TEGDME) electrolyte. The open circuit voltages (OCV) and discharge Curves were measured as a function of storage time. The self-discharge of the Li/S battery depended on current collectors. Li/TEGDME/S batteries with stainless steel (SUS) current collector showed the highest self-discharge rate of 59% per month. The self-discharge rate of Li/TEGDME/S battery using Al current collector is 34% during initial 80 days, but only 36% after 360 days storage. The discharge capacity decreases only 2% from 80 to 360 days. The self-discharge of Li/S battery using Al current collector is severe during initial 80 days, but is not an important factor after 80 days. Average self-discharge rate of Li/TEGDME/S battery using Al Current collector is 3% per month for I year. (c) 2006 Elsevier Ltd. All riahts reserved.
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