Protective electrode/electrolyte interphases for high energy lithium-ion batteries with p-toluenesulfonyl fluoride electrolyte additive

Yanxia Che; Xiuyi Lin; Lidan Xing; Xiongcong Guan; Rude Guo; Guangyuan Lan; Qinfeng Zheng; Wenguang Zhang; Weishan Li

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Protective electrode/electrolyte interphases for high energy lithium-ion batteries with p-toluenesulfonyl fluoride electrolyte additive

机译：高能量锂离子电池用对甲苯磺酰基氟电解质添加剂的保护电极/电解质互相

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High energy density lithium-ion batteries using Ni-rich cathode(such as LiNi0.6Co0.2Mn0.2O2) suffer from severe capacity decay.P-toluenesulfonyl fluoride(pTSF) has been investigated as a novel film-forming electrolyte additive to enhance the cycling performances of graphite/LiNi0.6Co0.2Mn0.2O2 pouch cell.In comparison with the baseline electrolyte,a small dose of pTSF can significantly improve the cyclic stability of the cell.Theoretical calculations together with experimental results indicate that pTSF would be oxidized and reduced to construct protective interphase film on the surfaces of LiNi0.6Co0.2Mn0.2O2 cathode and graphite anode,respectively.These S-containing surface films derived from pTSF effectively mitigate the decomposition of electrolyte,reduce the interphasial impedance,as well as prevent the dissolution of transition metal ions from Ni-rich cathode upon cycling at high voltage.This finding is beneficial for the practical application of high energy density graphite/LiNi0.6Co0.2Mn0.2O2 cells.

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《天然气化学（英文版）》 |2021年第1期|361-371|共11页
作者
Yanxia Che; Xiuyi Lin; Lidan Xing; Xiongcong Guan; Rude Guo; Guangyuan Lan; Qinfeng Zheng; Wenguang Zhang; Weishan Li;
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School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

National and Local Joint Engineering Research Center of MPTES in High Energy and Safety LIBs Engineering Research Center of MTEES(Ministry of Education) and Key Lab.of ETESPG(GHEI) South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

National and Local Joint Engineering Research Center of MPTES in High Energy and Safety LIBs Engineering Research Center of MTEES(Ministry of Education) and Key Lab.of ETESPG(GHEI) South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

School of Chemistry South China Normal University Guangzhou 510006 Guangdong China;

National and Local Joint Engineering Research Center of MPTES in High Energy and Safety LIBs Engineering Research Center of MTEES(Ministry of Education) and Key Lab.of ETESPG(GHEI) South China Normal University Guangzhou 510006 Guangdong China;

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Protective electrode/electrolyte interphases for high energy lithium-ion batteries with p-toluenesulfonyl fluoride electrolyte additive

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