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Corrosion of Aluminum Current Collectors in Lithium-Ion Batteries with Electrolytes Containing LiPF[sub 6]

2005; Institute of Physics; Volume: 152; Issue: 11 Linguagem: Inglês

10.1149/1.2041867

1945-7111

Xueyuan Zhang, Bryon Winget, Marca M. Doeff, James W. Evans, Thomas M. Devine,

Advanced Battery Materials and Technologies

Aluminum current collectors for cathodes in 61 life-tested lithium-ion batteries were microscopically examined for evidence of corrosion. In addition, galvanostatic anodic polarization tests were conducted in -containing battery electrolytes on samples of bare aluminum, of aluminum coated with a cathode, and of aluminum affixed with polyethylene crevices. The results indicate that aluminum current collectors are susceptible to corrosion, which most likely occurs as underdeposit corrosion at pores in the cathode.