Highly Oxidative-Resistant Cyano-Functionalized Lithium Borate Salt for Enhanced Cycling Performance of Practical Lithium-Ion Batteries

Xueqing Min; Changxing Han; Shenghang Zhang; Jun Ma; Naifang Hu; Jiedong Li; Xiaofan Du; Bin Xie; Hong Ji Lin; Chang Yang Kuo; Chien Te Chen; Zhiwei Hu; Lixin Qiao; Zili Cui; Gaojie Xu; Guanglei Cui

doi:10.1002/anie.202302664

Highly Oxidative-Resistant Cyano-Functionalized Lithium Borate Salt for Enhanced Cycling Performance of Practical Lithium-Ion Batteries

Xueqing Min, Changxing Han, Shenghang Zhang, Jun Ma, Naifang Hu, Jiedong Li, Xiaofan Du, Bin Xie, Hong Ji Lin, Chang Yang Kuo, Chien Te Chen, Zhiwei Hu, Lixin Qiao^*, Zili Cui^*, Gaojie Xu^*, Guanglei Cui^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Lithium difluoro(oxalato) borate (LiDFOB) has been widely investigated in lithium-ion batteries (LIBs) owing to its advantageous thermal stability and excellent aluminum passivation property. However, LiDFOB tends to suffer from severe decomposition and generate a lot of gas species (e.g., CO₂). Herein, a novel cyano-functionalized lithium borate salt, namely lithium difluoro(1,2-dihydroxyethane-1,1,2,2-tetracarbonitrile) borate (LiDFTCB), is innovatively synthesized as a highly oxidative-resistant salt to alleviate above dilemma. It is revealed that the LiDFTCB-based electrolyte enables LiCoO₂/graphite cells with superior capacity retention at both room and elevated temperatures (e.g., 80 % after 600 cycles) with barely any CO₂ gas evolution. Systematic studies reveal that LiDFTCB tends to form thin and robust interfacial layers at both electrodes. This work emphasizes the crucial role of cyano-functionalized anions in improving cycle lifespan and safety of practical LIBs.

Original language	English
Article number	e202302664
Journal	Angewandte Chemie - International Edition
Volume	62
Issue number	34
DOIs	https://doi.org/10.1002/anie.202302664
State	Published - 21 Aug 2023

Keywords

Anionic Chemistry
Electrode/Electrolyte Interphases
High-Temperature Performance
Lithium Salt
Practical Lithium-Ion Battery

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/anie.202302664

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Min, X., Han, C., Zhang, S., Ma, J., Hu, N., Li, J., Du, X., Xie, B., Lin, H. J., Kuo, C. Y., Chen, C. T., Hu, Z., Qiao, L., Cui, Z., Xu, G., & Cui, G. (2023). Highly Oxidative-Resistant Cyano-Functionalized Lithium Borate Salt for Enhanced Cycling Performance of Practical Lithium-Ion Batteries. Angewandte Chemie - International Edition, 62(34), Article e202302664. https://doi.org/10.1002/anie.202302664

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title = "Highly Oxidative-Resistant Cyano-Functionalized Lithium Borate Salt for Enhanced Cycling Performance of Practical Lithium-Ion Batteries",

abstract = "Lithium difluoro(oxalato) borate (LiDFOB) has been widely investigated in lithium-ion batteries (LIBs) owing to its advantageous thermal stability and excellent aluminum passivation property. However, LiDFOB tends to suffer from severe decomposition and generate a lot of gas species (e.g., CO2). Herein, a novel cyano-functionalized lithium borate salt, namely lithium difluoro(1,2-dihydroxyethane-1,1,2,2-tetracarbonitrile) borate (LiDFTCB), is innovatively synthesized as a highly oxidative-resistant salt to alleviate above dilemma. It is revealed that the LiDFTCB-based electrolyte enables LiCoO2/graphite cells with superior capacity retention at both room and elevated temperatures (e.g., 80 % after 600 cycles) with barely any CO2 gas evolution. Systematic studies reveal that LiDFTCB tends to form thin and robust interfacial layers at both electrodes. This work emphasizes the crucial role of cyano-functionalized anions in improving cycle lifespan and safety of practical LIBs.",

keywords = "Anionic Chemistry, Electrode/Electrolyte Interphases, High-Temperature Performance, Lithium Salt, Practical Lithium-Ion Battery",

author = "Xueqing Min and Changxing Han and Shenghang Zhang and Jun Ma and Naifang Hu and Jiedong Li and Xiaofan Du and Bin Xie and Lin, {Hong Ji} and Kuo, {Chang Yang} and Chen, {Chien Te} and Zhiwei Hu and Lixin Qiao and Zili Cui and Gaojie Xu and Guanglei Cui",

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year = "2023",

month = aug,

day = "21",

doi = "10.1002/anie.202302664",

language = "English",

volume = "62",

journal = "Angewandte Chemie - International Edition",

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Min, X, Han, C, Zhang, S, Ma, J, Hu, N, Li, J, Du, X, Xie, B, Lin, HJ, Kuo, CY, Chen, CT, Hu, Z, Qiao, L, Cui, Z, Xu, G & Cui, G 2023, 'Highly Oxidative-Resistant Cyano-Functionalized Lithium Borate Salt for Enhanced Cycling Performance of Practical Lithium-Ion Batteries', Angewandte Chemie - International Edition, vol. 62, no. 34, e202302664. https://doi.org/10.1002/anie.202302664

TY - JOUR

T1 - Highly Oxidative-Resistant Cyano-Functionalized Lithium Borate Salt for Enhanced Cycling Performance of Practical Lithium-Ion Batteries

AU - Min, Xueqing

AU - Han, Changxing

AU - Zhang, Shenghang

AU - Ma, Jun

AU - Hu, Naifang

AU - Li, Jiedong

AU - Du, Xiaofan

AU - Xie, Bin

AU - Lin, Hong Ji

AU - Kuo, Chang Yang

AU - Chen, Chien Te

AU - Hu, Zhiwei

AU - Qiao, Lixin

AU - Cui, Zili

AU - Xu, Gaojie

AU - Cui, Guanglei

PY - 2023/8/21

Y1 - 2023/8/21

N2 - Lithium difluoro(oxalato) borate (LiDFOB) has been widely investigated in lithium-ion batteries (LIBs) owing to its advantageous thermal stability and excellent aluminum passivation property. However, LiDFOB tends to suffer from severe decomposition and generate a lot of gas species (e.g., CO2). Herein, a novel cyano-functionalized lithium borate salt, namely lithium difluoro(1,2-dihydroxyethane-1,1,2,2-tetracarbonitrile) borate (LiDFTCB), is innovatively synthesized as a highly oxidative-resistant salt to alleviate above dilemma. It is revealed that the LiDFTCB-based electrolyte enables LiCoO2/graphite cells with superior capacity retention at both room and elevated temperatures (e.g., 80 % after 600 cycles) with barely any CO2 gas evolution. Systematic studies reveal that LiDFTCB tends to form thin and robust interfacial layers at both electrodes. This work emphasizes the crucial role of cyano-functionalized anions in improving cycle lifespan and safety of practical LIBs.

AB - Lithium difluoro(oxalato) borate (LiDFOB) has been widely investigated in lithium-ion batteries (LIBs) owing to its advantageous thermal stability and excellent aluminum passivation property. However, LiDFOB tends to suffer from severe decomposition and generate a lot of gas species (e.g., CO2). Herein, a novel cyano-functionalized lithium borate salt, namely lithium difluoro(1,2-dihydroxyethane-1,1,2,2-tetracarbonitrile) borate (LiDFTCB), is innovatively synthesized as a highly oxidative-resistant salt to alleviate above dilemma. It is revealed that the LiDFTCB-based electrolyte enables LiCoO2/graphite cells with superior capacity retention at both room and elevated temperatures (e.g., 80 % after 600 cycles) with barely any CO2 gas evolution. Systematic studies reveal that LiDFTCB tends to form thin and robust interfacial layers at both electrodes. This work emphasizes the crucial role of cyano-functionalized anions in improving cycle lifespan and safety of practical LIBs.

KW - Anionic Chemistry

KW - Electrode/Electrolyte Interphases

KW - High-Temperature Performance

KW - Lithium Salt

KW - Practical Lithium-Ion Battery

UR - http://www.scopus.com/inward/record.url?scp=85164827291&partnerID=8YFLogxK

U2 - 10.1002/anie.202302664

DO - 10.1002/anie.202302664

M3 - Article

C2 - 37349889

AN - SCOPUS:85164827291

SN - 1433-7851

VL - 62

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 34

M1 - e202302664

ER -

Highly Oxidative-Resistant Cyano-Functionalized Lithium Borate Salt for Enhanced Cycling Performance of Practical Lithium-Ion Batteries

Abstract

Keywords

UN SDGs

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