A strategy to make high voltage LiCoO2 compatible with polyethylene oxide electrolyte in all-solid-state lithium ion batteries

Jun Ma; Zhaolin Liu; Bingbing Chen; Longlong Wang; Liping Yue; Haisheng Liu; Jianjun Zhang; Zhihong Liu; Guanglei Cui

doi:10.1149/2.0221714jes

A strategy to make high voltage LiCoO₂ compatible with polyethylene oxide electrolyte in all-solid-state lithium ion batteries

Jun Ma, Zhaolin Liu, Bingbing Chen, Longlong Wang, Liping Yue, Haisheng Liu, Jianjun Zhang, Zhihong Liu, Guanglei Cui

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

131 Scopus citations

Abstract

Interface stability between cathode and electrolyte is closely related to the interface resistance and electrochemical performance of all-solid-state lithium ion batteries (LIBs). However, the significant interface issues between cathode and all-solid-state polymer electrolyte have been researched rarely. Here, we demonstrate that severe interface decomposition reactions occur continually and deteriorate the cycling life of high voltage LiCoO₂/cellulose-supported poly(ethylene oxide) (PEO)-lithium difluoro(oxalato)borate (LiDFOB)/Li battery between 2.5 and 4.45 V vs. Li/Li+. To improve the interface stability between LiCoO₂ and PEO-LiDFOB electrolyte, we modify the LiCoO₂ surface by a thin layer of high ionic conducting and electrochemical oxidation resistant poly(ethyl cyanoacrylate) (PECA) through in-situ polymerization method. The PECA coating layer significantly suppresses the continuous decomposition of lithium difluoro(oxalato)borate (LiDFOB) salt in PEO electrolyte. As a result, the PECA-coated LiCoO₂/PEOLiDFOB/ Li battery shows decreased interface resistance and enhanced cycling stability. This work will enlighten the understanding of interface stability and enrich the modification strategy between cathode and polymer electrolyte as well as boost the further development of all-solid-state LIBs.

Original language	English
Pages (from-to)	A3454-A3461
Journal	Journal of the Electrochemical Society
Volume	164
Issue number	14
DOIs	https://doi.org/10.1149/2.0221714jes
State	Published - 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 The Electrochemical Society.

Funding

This work was financially supported by the funding from National Natural Science Foundation of China (No. 51502319), “135” Projects Fund of CAS-QIBEBT Director Innovation Foundation, the Strategic Priority Research Program of the Chinese Academy of Sciences (grant No. XDA09010105), the China Postdoctoral Science Foundation (2017M612366), the Think-Tank Mutual Fund of Qingdao Energy Storage Industry Scientific Research, the Qingdao Science and Technology Program (17-1-1-26-jch), and Qingdao Key Lab of Solar Energy Utilization & Energy Storage Technology. The authors declare no competing financial interest.

Funders	Funder number
CAS-QIBEBT
Qingdao Science and Technology Program	17-1-1-26-jch
National Natural Science Foundation of China	51502319
Chinese Academy of Sciences	XDA09010105
China Postdoctoral Science Foundation	2017M612366

UN SDGs

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

Access to Document

10.1149/2.0221714jes

Cite this

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title = "A strategy to make high voltage LiCoO2 compatible with polyethylene oxide electrolyte in all-solid-state lithium ion batteries",

abstract = "Interface stability between cathode and electrolyte is closely related to the interface resistance and electrochemical performance of all-solid-state lithium ion batteries (LIBs). However, the significant interface issues between cathode and all-solid-state polymer electrolyte have been researched rarely. Here, we demonstrate that severe interface decomposition reactions occur continually and deteriorate the cycling life of high voltage LiCoO2/cellulose-supported poly(ethylene oxide) (PEO)-lithium difluoro(oxalato)borate (LiDFOB)/Li battery between 2.5 and 4.45 V vs. Li/Li+. To improve the interface stability between LiCoO2 and PEO-LiDFOB electrolyte, we modify the LiCoO2 surface by a thin layer of high ionic conducting and electrochemical oxidation resistant poly(ethyl cyanoacrylate) (PECA) through in-situ polymerization method. The PECA coating layer significantly suppresses the continuous decomposition of lithium difluoro(oxalato)borate (LiDFOB) salt in PEO electrolyte. As a result, the PECA-coated LiCoO2/PEOLiDFOB/ Li battery shows decreased interface resistance and enhanced cycling stability. This work will enlighten the understanding of interface stability and enrich the modification strategy between cathode and polymer electrolyte as well as boost the further development of all-solid-state LIBs.",

author = "Jun Ma and Zhaolin Liu and Bingbing Chen and Longlong Wang and Liping Yue and Haisheng Liu and Jianjun Zhang and Zhihong Liu and Guanglei Cui",

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AU - Ma, Jun

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AU - Yue, Liping

AU - Liu, Haisheng

AU - Zhang, Jianjun

AU - Liu, Zhihong

AU - Cui, Guanglei

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N2 - Interface stability between cathode and electrolyte is closely related to the interface resistance and electrochemical performance of all-solid-state lithium ion batteries (LIBs). However, the significant interface issues between cathode and all-solid-state polymer electrolyte have been researched rarely. Here, we demonstrate that severe interface decomposition reactions occur continually and deteriorate the cycling life of high voltage LiCoO2/cellulose-supported poly(ethylene oxide) (PEO)-lithium difluoro(oxalato)borate (LiDFOB)/Li battery between 2.5 and 4.45 V vs. Li/Li+. To improve the interface stability between LiCoO2 and PEO-LiDFOB electrolyte, we modify the LiCoO2 surface by a thin layer of high ionic conducting and electrochemical oxidation resistant poly(ethyl cyanoacrylate) (PECA) through in-situ polymerization method. The PECA coating layer significantly suppresses the continuous decomposition of lithium difluoro(oxalato)borate (LiDFOB) salt in PEO electrolyte. As a result, the PECA-coated LiCoO2/PEOLiDFOB/ Li battery shows decreased interface resistance and enhanced cycling stability. This work will enlighten the understanding of interface stability and enrich the modification strategy between cathode and polymer electrolyte as well as boost the further development of all-solid-state LIBs.

AB - Interface stability between cathode and electrolyte is closely related to the interface resistance and electrochemical performance of all-solid-state lithium ion batteries (LIBs). However, the significant interface issues between cathode and all-solid-state polymer electrolyte have been researched rarely. Here, we demonstrate that severe interface decomposition reactions occur continually and deteriorate the cycling life of high voltage LiCoO2/cellulose-supported poly(ethylene oxide) (PEO)-lithium difluoro(oxalato)borate (LiDFOB)/Li battery between 2.5 and 4.45 V vs. Li/Li+. To improve the interface stability between LiCoO2 and PEO-LiDFOB electrolyte, we modify the LiCoO2 surface by a thin layer of high ionic conducting and electrochemical oxidation resistant poly(ethyl cyanoacrylate) (PECA) through in-situ polymerization method. The PECA coating layer significantly suppresses the continuous decomposition of lithium difluoro(oxalato)borate (LiDFOB) salt in PEO electrolyte. As a result, the PECA-coated LiCoO2/PEOLiDFOB/ Li battery shows decreased interface resistance and enhanced cycling stability. This work will enlighten the understanding of interface stability and enrich the modification strategy between cathode and polymer electrolyte as well as boost the further development of all-solid-state LIBs.

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