Application of Lithium Difluorophosphate as Electrolyte Additive in Lithium Ion Batteries

ZHANG Qian-kui; LIU Si; WANG Xian-shu; YU Le; FAN Wei-zhen; LI Wei-shan

doi:10.3969/j.issn.2095-560X.2019.06.002

Advances in New and Renewable Energy >

2019 , Vol. 7 >Issue 6: 480 - 486

DOI: https://doi.org/10.3969/j.issn.2095-560X.2019.06.002

Application of Lithium Difluorophosphate as Electrolyte Additive in Lithium Ion Batteries

ZHANG Qian-kui ,
LIU Si ,
WANG Xian-shu ,
YU Le ,
FAN Wei-zhen ,
LI Wei-shan

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1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China;
2. Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, Guangzhou 510006, China;
3. Guangzhou Tinci Material Technology Co., Ltd, Guangzhou 510760, China

Received date: 2019-07-06

Online published: 2019-12-31

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Abstract

The energy density of lithium-ion batteries is mainly determined by the specific capacity and the potentials of the cathode and anode materials, but its performances are highly related to the properties of electrode/electrolyte interface. In order to improve the performances of lithium ion batteries, it is necessary to apply electrolyte additives to modify the electrode/electrolyte interface. So far, many electrolyte additives have been reported in literature, but few of them have been used in practice. Lithium difluorophosphate (LiPO₂F₂) is one of the electrolyte additives that have been applied in practice, which can reduce interface impedance and improve charge/discharge cycling stability. The recent progress on the applications of this additive was reviewed and the related mechanism was discussed in this paper.

Key words： lithium ion battery; electrode/electrolyte interface; electrolyte additive; lithium difluorophosphate

Cite this article

ZHANG Qian-kui , LIU Si , WANG Xian-shu , YU Le , FAN Wei-zhen , LI Wei-shan . Application of Lithium Difluorophosphate as Electrolyte Additive in Lithium Ion Batteries[J]. Advances in New and Renewable Energy, 2019 , 7(6) : 480 -486 . DOI: 10.3969/j.issn.2095-560X.2019.06.002

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