Organic-Radical battery (ORB) is a rechargeable battery based on a radical polymer electrode. Nitroxide-radical polymers such as poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) (PTMA) are used as the cathode material of the ORB. PTMA is in a gel state in the battery because the organic electrolyte of the battery can permeate into it. This permeation property leads to flexibility of thin-type ORBs. In the present study, the discharge characteristics of an ORB at extremely low temperature ( -30�C) were investigated. The electrolyte system having ?-butyrolactone (GBL) which has low melting point and high ionic conductivity was applied to improve discharge properties at low-temperature. The discharge capacity of the ORB with GBL-based electrolyte was about 2.5 times higher than that of the one with DEC-based electrolyte at -30�C. Ionic conductivity of GBL-based electolyte is higher than that of DEC-based electrolyte at -30�C. The discharge capacity in the low-temperature range is therefore improved by using of GBL-based electrolyte.

Low temperature discharge property of organic-radical battery with GBL-based electrolytes

247th National Meeting (2014)

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