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

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

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.

Original languageEnglish
Pages (from-to)10710-10714
Number of pages5
JournalJournal of Materials Chemistry A
Volume3
Issue number20
DOIs
StatePublished - May 28 2015
Externally publishedYes

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