Electrolyte-assisted low-voltage decomposition of Li2C2O4 for efficient cathode pre-lithiation in lithium-ion batteries

Literature Information

Publication Date 2023-10-31
DOI 10.1039/D3CC04442D
Impact Factor 6.222
Authors

Rang Xiao, Cong Kang, Yang Ren, Jiyuan Jian, Binghan Cui, Geping Yin, Yulin Ma, Pengjian Zuo, Guokang Han, Chunyu Du


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Abstract

Lithium oxalate (Li2C2O4) is an attractive cathode pre-lithiation additive for lithium-ion batteries (LIBs), but its application is hindered by its high decomposition potential (>4.7 V). Due to the liquid–solid synergistic effect of the NaNO2 additive and the LiNi0.83Co0.07Mn0.1O2 (NCM) cathode material, the decomposition efficiency of micro-Li2C2O4 reaches 100% at a low charge cutoff voltage of 4.3 V. Our work boosts the widespread practical application of Li2C2O4 by a simple and promising electrolyte-assisted cathode pre-lithiation strategy.

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