A dual-additive strategy constructing robust Li3N-Rich SEI and proton scavenging for high-rate lithium metal batteries

Dongxiang Li; Suyan Niu; Zhigang Zhang; Chen Yang; Boyun Wang; Zilong Liu; Na Ju; You Fu; Lei Shi; Guang-Wen Xu; Hong-bin Sun

doi:10.1039/D6CC00660D

A dual-additive strategy constructing robust Li₃N-Rich SEI and proton scavenging for high-rate lithium metal batteries

Dongxiang Li,†^abc Suyan Niu,†^b Zhigang Zhang,^ac Chen Yang,^ac Boyun Wang,^ac Zilong Liu,^b Na Ju,^b You Fu,^b Lei Shi,

*^ac Guang-Wen Xu*^ac and Hong-bin Sun

*^ab

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* Corresponding authors

^a Key Laboratory on Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang 110142, People's Republic of China
E-mail: shilei@syuct.edu.cn, gwxu@syuct.edu.cn

^b Department of Chemistry, Northeastern University, Shenyang 110819, People's Republic of China
E-mail: sunhb@mail.neu.edu.cn

^c Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang 110142, People's Republic of China

Abstract

The synergistic combination of 3-cyano-1,2,4-triazole (CTZ) and 1-(Trimethylsilyl)imidazole (TMSIM), featuring π-donor–acceptor (π-DA) interactions, facilitates the formation of a Li₃N-rich solid electrolyte interphase (SEI) with high mechanical strength and ionic conductivity. This interface enables Li|| LiFePO₄ (LFP) batteries to maintain 96.74% capacity after 1200 cycles at 5C, offering a promising strategy for fast-charging lithium metal batteries.

Chemical Communications

A dual-additive strategy constructing robust Li₃N-Rich SEI and proton scavenging for high-rate lithium metal batteries

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A dual-additive strategy constructing robust Li₃N-Rich SEI and proton scavenging for high-rate lithium metal batteries

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