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A Phosphorous Additive for Lithium-Ion Batteries

2008; Electrochemical Society; Volume: 11; Issue: 8 Linguagem: Inglês

10.1149/1.2931972

1944-8775

Yulin Ma, Geping Yin, Pengjian Zuo, TAN Xiao-Lan, Yunzhi Gao, Pengfei Shi,

Advanced Battery Technologies Research

Triphenyl phosphite (TPPi) is reported as a phosphorous additive for lithium-ion batteries. It is found that TPPi can depress the flammability of electrolyte. Moreover, a passivation layer formed on the surface of the electrode as the cell was overcharged in the electrolyte containing TPPi. TPPi can be used as an additive for the overcharge protection of cathode for lithium-ion batteries. The cycle performance of the cell decreases slightly in the electrolyte containing TPPi after 40 cycles.