Polyimide gel polymer electrolyte-nanoencapsulated LiCoO2 cathode materials for high-voltage Li-ion batteries

Jang Hoon Park; Jong Su Kim; Eun Gi Shim; Kyung Won Park; Young Taik Hong; Yun Sung Lee; Sang Young Lee

doi:10.1016/j.elecom.2010.05.038

Polyimide gel polymer electrolyte-nanoencapsulated LiCoO₂ cathode materials for high-voltage Li-ion batteries

Jang Hoon Park, Jong Su Kim, Eun Gi Shim, Kyung Won Park, Young Taik Hong, Yun Sung Lee, Sang Young Lee

Department of Chemical and Biomolecular Engineering

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

68 Citations (Scopus)

Abstract

We demonstrate a novel and facile approach to surface modification of high-voltage charged LiCoO₂, which is based on encapsulating LiCoO₂ by a polyimide (PI) gel polymer electrolyte layer. The PI is introduced onto the LiCoO₂ by thermally curing 4-component (pyromellitic dianhydride/biphenyl dianhydride/phenylenediamine/oxydianiline) polyamic acid. The PI nanoencapsulating layer features the high surface coverage, nanometer thickness, and facile ion transport. These unique characteristics are expected to enable the PI coating layer to effectively suppress the undesirable interfacial reaction of the LiCoO₂ with liquid electrolyte, which plays a key role in noticeably improving the 4.4 V cycle performance and mitigating the vigorous exothermic reaction between the charged LiCoO₂ and liquid electrolyte.

Original language	English
Pages (from-to)	1099-1102
Number of pages	4
Journal	Electrochemistry Communications
Volume	12
Issue number	8
DOIs	https://doi.org/10.1016/j.elecom.2010.05.038
Publication status	Published - 2010 Aug

Bibliographical note

Funding Information:
This work was supported by the IT R&D program of MKE/KEIT [ KI002176-2010-02 , Development of 3.6Ah Class Cylindrical Type Lithium Secondary Battery].

All Science Journal Classification (ASJC) codes

Electrochemistry

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title = "Polyimide gel polymer electrolyte-nanoencapsulated LiCoO2 cathode materials for high-voltage Li-ion batteries",

abstract = "We demonstrate a novel and facile approach to surface modification of high-voltage charged LiCoO2, which is based on encapsulating LiCoO2 by a polyimide (PI) gel polymer electrolyte layer. The PI is introduced onto the LiCoO2 by thermally curing 4-component (pyromellitic dianhydride/biphenyl dianhydride/phenylenediamine/oxydianiline) polyamic acid. The PI nanoencapsulating layer features the high surface coverage, nanometer thickness, and facile ion transport. These unique characteristics are expected to enable the PI coating layer to effectively suppress the undesirable interfacial reaction of the LiCoO2 with liquid electrolyte, which plays a key role in noticeably improving the 4.4 V cycle performance and mitigating the vigorous exothermic reaction between the charged LiCoO2 and liquid electrolyte.",

author = "Park, {Jang Hoon} and Kim, {Jong Su} and Shim, {Eun Gi} and Park, {Kyung Won} and Hong, {Young Taik} and Lee, {Yun Sung} and Lee, {Sang Young}",

note = "Funding Information: This work was supported by the IT R&D program of MKE/KEIT [ KI002176-2010-02 , Development of 3.6Ah Class Cylindrical Type Lithium Secondary Battery].",

year = "2010",

month = aug,

doi = "10.1016/j.elecom.2010.05.038",

language = "English",

volume = "12",

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journal = "Electrochemistry Communications",

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T1 - Polyimide gel polymer electrolyte-nanoencapsulated LiCoO2 cathode materials for high-voltage Li-ion batteries

AU - Park, Jang Hoon

AU - Kim, Jong Su

AU - Shim, Eun Gi

AU - Park, Kyung Won

AU - Hong, Young Taik

AU - Lee, Yun Sung

AU - Lee, Sang Young

N1 - Funding Information: This work was supported by the IT R&D program of MKE/KEIT [ KI002176-2010-02 , Development of 3.6Ah Class Cylindrical Type Lithium Secondary Battery].

PY - 2010/8

Y1 - 2010/8

N2 - We demonstrate a novel and facile approach to surface modification of high-voltage charged LiCoO2, which is based on encapsulating LiCoO2 by a polyimide (PI) gel polymer electrolyte layer. The PI is introduced onto the LiCoO2 by thermally curing 4-component (pyromellitic dianhydride/biphenyl dianhydride/phenylenediamine/oxydianiline) polyamic acid. The PI nanoencapsulating layer features the high surface coverage, nanometer thickness, and facile ion transport. These unique characteristics are expected to enable the PI coating layer to effectively suppress the undesirable interfacial reaction of the LiCoO2 with liquid electrolyte, which plays a key role in noticeably improving the 4.4 V cycle performance and mitigating the vigorous exothermic reaction between the charged LiCoO2 and liquid electrolyte.

AB - We demonstrate a novel and facile approach to surface modification of high-voltage charged LiCoO2, which is based on encapsulating LiCoO2 by a polyimide (PI) gel polymer electrolyte layer. The PI is introduced onto the LiCoO2 by thermally curing 4-component (pyromellitic dianhydride/biphenyl dianhydride/phenylenediamine/oxydianiline) polyamic acid. The PI nanoencapsulating layer features the high surface coverage, nanometer thickness, and facile ion transport. These unique characteristics are expected to enable the PI coating layer to effectively suppress the undesirable interfacial reaction of the LiCoO2 with liquid electrolyte, which plays a key role in noticeably improving the 4.4 V cycle performance and mitigating the vigorous exothermic reaction between the charged LiCoO2 and liquid electrolyte.

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JO - Electrochemistry Communications

JF - Electrochemistry Communications

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