Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries

Yongho Lee; Sang Ok Kim; Junyoung Mun; Min Sik Park; Ki Jae Kim; Kwan Young Lee; Wonchang Choi

doi:10.1016/j.jelechem.2017.11.046

Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries

Yongho Lee, Sang Ok Kim, Junyoung Mun, Min Sik Park, Ki Jae Kim, Kwan Young Lee, Wonchang Choi

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

18 Citations (Scopus)

Abstract

The thermal stability of a fully delithiated cathode, coupled with an inorganic salt, organic solvents, and electrolyte, was evaluated with differential scanning calorimetry (DSC) to address the safety issue of lithium-ion batteries. The DSC experiments revealed that vinylene carbonate (VC)-based systems exhibit decreased thermal stability compared to other coexisting systems. The DSC analysis of the cathode and electrolyte in the presence of VC, employed as additives, confirmed the reduction in thermal stability. Our results suggested that VC additives, which have been recently employed to enhance the electrochemical performance in anodes, negatively affect the thermal properties and safety characteristics of the cathode in lithium-ion batteries.

Original language	English
Pages (from-to)	174-180
Number of pages	7
Journal	Journal of Electroanalytical Chemistry
Volume	807
DOIs	https://doi.org/10.1016/j.jelechem.2017.11.046
Publication status	Published - 2017 Dec 15

Bibliographical note

Funding Information:
This work was supported by the institutional program of the Korea Institute of Science and Technology ( KIST-2E27062 ).

Keywords

Additives
Cathode
Lithium-ion battery
Solvents
Thermal stability

ASJC Scopus subject areas

Analytical Chemistry
General Chemical Engineering
Electrochemistry

UN SDGs

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

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10.1016/j.jelechem.2017.11.046

Cite this

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title = "Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries",

abstract = "The thermal stability of a fully delithiated cathode, coupled with an inorganic salt, organic solvents, and electrolyte, was evaluated with differential scanning calorimetry (DSC) to address the safety issue of lithium-ion batteries. The DSC experiments revealed that vinylene carbonate (VC)-based systems exhibit decreased thermal stability compared to other coexisting systems. The DSC analysis of the cathode and electrolyte in the presence of VC, employed as additives, confirmed the reduction in thermal stability. Our results suggested that VC additives, which have been recently employed to enhance the electrochemical performance in anodes, negatively affect the thermal properties and safety characteristics of the cathode in lithium-ion batteries.",

keywords = "Additives, Cathode, Lithium-ion battery, Solvents, Thermal stability",

author = "Yongho Lee and Kim, {Sang Ok} and Junyoung Mun and Park, {Min Sik} and Kim, {Ki Jae} and Lee, {Kwan Young} and Wonchang Choi",

note = "Funding Information: This work was supported by the institutional program of the Korea Institute of Science and Technology ( KIST-2E27062 ). ",

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doi = "10.1016/j.jelechem.2017.11.046",

language = "English",

volume = "807",

pages = "174--180",

journal = "Journal of Electroanalytical Chemistry",

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T1 - Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries

AU - Lee, Yongho

AU - Kim, Sang Ok

AU - Mun, Junyoung

AU - Park, Min Sik

AU - Kim, Ki Jae

AU - Lee, Kwan Young

AU - Choi, Wonchang

N1 - Funding Information: This work was supported by the institutional program of the Korea Institute of Science and Technology ( KIST-2E27062 ).

PY - 2017/12/15

Y1 - 2017/12/15

N2 - The thermal stability of a fully delithiated cathode, coupled with an inorganic salt, organic solvents, and electrolyte, was evaluated with differential scanning calorimetry (DSC) to address the safety issue of lithium-ion batteries. The DSC experiments revealed that vinylene carbonate (VC)-based systems exhibit decreased thermal stability compared to other coexisting systems. The DSC analysis of the cathode and electrolyte in the presence of VC, employed as additives, confirmed the reduction in thermal stability. Our results suggested that VC additives, which have been recently employed to enhance the electrochemical performance in anodes, negatively affect the thermal properties and safety characteristics of the cathode in lithium-ion batteries.

AB - The thermal stability of a fully delithiated cathode, coupled with an inorganic salt, organic solvents, and electrolyte, was evaluated with differential scanning calorimetry (DSC) to address the safety issue of lithium-ion batteries. The DSC experiments revealed that vinylene carbonate (VC)-based systems exhibit decreased thermal stability compared to other coexisting systems. The DSC analysis of the cathode and electrolyte in the presence of VC, employed as additives, confirmed the reduction in thermal stability. Our results suggested that VC additives, which have been recently employed to enhance the electrochemical performance in anodes, negatively affect the thermal properties and safety characteristics of the cathode in lithium-ion batteries.

KW - Additives

KW - Cathode

KW - Lithium-ion battery

KW - Solvents

KW - Thermal stability

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DO - 10.1016/j.jelechem.2017.11.046

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SN - 1572-6657

VL - 807

SP - 174

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JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Influence of salt, solvents, and additives on the thermal stability of delithiated cathodes in lithium-ion batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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