An organophosphine oxide redox shuttle additive that delivers long-term overcharge protection for 4 V lithium-ion batteries

Jinhua Huang; Nasim Azimi; Lei Cheng; Ilya A. Shkrob; Zheng Xue; Junjie Zhang; Nancy L. Dietz Rago; Larry A. Curtiss; Khalil Amine; Zhengcheng Zhang; Lu Zhang

doi:10.1039/C5TA01326G

An organophosphine oxide redox shuttle additive that delivers long-term overcharge protection for 4 V lithium-ion batteries†

Jinhua Huang,‡^ab Nasim Azimi,‡^b Lei Cheng,^ac Ilya A. Shkrob,^b Zheng Xue,^b Junjie Zhang,^c Nancy L. Dietz Rago,^b Larry A. Curtiss,^ac Khalil Amine,^ab Zhengcheng Zhang*^ab and Lu Zhang*^ab

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* Corresponding authors

^a Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, IL 60439, USA
E-mail: zzhang@anl.gov, luzhang@anl.gov

^b Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA

^c Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA

Abstract

Redox shuttle additives are used to protect Li-ion batteries from overcharge. Increased operating voltage requires striking a balance between a high redox potential and electrochemical stability. 1,4-Bis[bis(1-methylethyl)phosphinyl]-2,5-dimethoxybenzene (BPDB) exhibits a redox potential of 4.5 V vs. Li/Li⁺ and provides stable overcharge protection for 4 V cells delivering 95 cycles of 100% overcharge ratio.

Journal of Materials Chemistry A

An organophosphine oxide redox shuttle additive that delivers long-term overcharge protection for 4 V lithium-ion batteries†

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An organophosphine oxide redox shuttle additive that delivers long-term overcharge protection for 4 V lithium-ion batteries

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