Self-discharge characteristics of lithium/sulfur batteries using TEGDME liquid electrolyte
By Ryu, H.S.; Ahn, H.J.; Kim, K.W.; Ahn, J.H.; Cho, K.K. & Nam, T.H.
Published in Electrochimica Acta
NULL
2006
Abstract
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 1 year.
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