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An electrochemical quartz crystal microbalance is used in an investigation of the corrosion of aluminum in electrolytes appropriate for lithium batteries. The electrolytes are solutions of LiN ( CF 3 SO 2 ) 2 , LiC ( CF 3 SO 2 ) 3 , LiCF 3 SO 3 , LiPF 6 , LiBF 4 , and LiClO 4 , singly or in a limited number of combinations, in propylene carbonate (PC) and polyethylene glycol dimethyl ether. Aluminum that is scratched or abraded in an inert atmosphere (so that a protective surface film does not reform) undergoes significant corrosion in PC containing LiN ( CF 3 SO 2 ) 2 , LiC ( CF 3 SO 2 ) 3 , LiCF 3 SO 3 , and LiClO 4 , but forms a protective film in PC containing LiPF 6 , or LiBF 4 . A mechanism of corrosion of aluminum in LiN ( CF 3 SO 2 ) 2 / PC is proposed. © 2000 The Electrochemical Society. All rights reserved.

A thermal analysis of lithium‐ion batteries during charge/discharge and thermal runaway has been carried out with a mathematical model. The main concern with the thermal behavior of the room temperature batteries is the possible significant temperature increase which may cause thermal runaway. The emphases of this work include the examination of the effects of battery design parameters and operating conditions on temperature rise/profile during normal battery operation and the evaluation of the possibility of the occurrence of thermal runaway due to battery abuse.