Revealing performance
of 78Li2S-22P2S5 glass ceramic based
solid-state batteries at different operating temperatures

Chaochao WEI; Xinrong LIU; Chuang YU; Shaoqing CHEN; Shuai CHEN; Shijie CHENG; Jia XIE

doi:10.1016/j.cclet.2022.107859

Revealing performance of 78Li₂S-22P₂S₅ glass ceramic based solid-state batteries at different operating temperatures

Chaochao WEI
, Xinrong LIU
, Chuang YU^*
, Shaoqing CHEN
, Shuai CHEN
, Shijie CHENG
, Jia XIE

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

26 Citations (Scopus)

Abstract

78Li2S-22P2S5 are sulfide electrolytes with high lithium-ion conductivity and wide electrochemical windows in the Li2S-P2S5 system, making them attractive solid electrolytes for ASSLBs. However, the role and potential of 78Li2S-22P2S5 solid electrolytes over a wide temperature range are still not fully understood. Therefore, we constructed solid-state batteries with NCM622 as the positive electrode and 78Li2S-22P2S5 glass-ceramics as the electrolyte to investigate in depth the differences in battery performance over a wide temperature range and their intrinsic mechanisms. The in-situ impedance and relaxation time distribution (DRT) demonstrated the electrochemical stability of the electrolyte over a wide temperature range, while the in-situ stacking pressure observed a large volume change during cycling at 60 °C, leading to local solid-solid contact failure and poor cycling stability. This study provides insight into the advantages and problems of 78Li2S-22P2S5 in the wide temperature range as well as a basis for the construction of ASSLBs with high energy density and long cycle life.

Original language	English
Article number	107859
Journal	Chinese Chemical Letters
Volume	34
Issue number	7
Early online date	1 Oct 2022
DOIs	https://doi.org/10.1016/j.cclet.2022.107859
Publication status	Published - Jul 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023

Funding

This work was supported by the National Key Research and Development Program (No. 2021YFB2400300 ) and the National Natural Science Foundation of China (No. 52177214 ). We gratefully acknowledge the Analytical and Testing Center of HUST for the technical support.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

78Li2S-22P2S5 electrolytes
Battery performance
Interfacial resistance
Li-ion conductivity
Operating temperature
Volume changes

Access to Document

10.1016/j.cclet.2022.107859

Cite this

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title = "Revealing performance of 78Li2S-22P2S5 glass ceramic based solid-state batteries at different operating temperatures",

abstract = "78Li2S-22P2S5 are sulfide electrolytes with high lithium-ion conductivity and wide electrochemical windows in the Li2S-P2S5 system, making them attractive solid electrolytes for ASSLBs. However, the role and potential of 78Li2S-22P2S5 solid electrolytes over a wide temperature range are still not fully understood. Therefore, we constructed solid-state batteries with NCM622 as the positive electrode and 78Li2S-22P2S5 glass-ceramics as the electrolyte to investigate in depth the differences in battery performance over a wide temperature range and their intrinsic mechanisms. The in-situ impedance and relaxation time distribution (DRT) demonstrated the electrochemical stability of the electrolyte over a wide temperature range, while the in-situ stacking pressure observed a large volume change during cycling at 60 °C, leading to local solid-solid contact failure and poor cycling stability. This study provides insight into the advantages and problems of 78Li2S-22P2S5 in the wide temperature range as well as a basis for the construction of ASSLBs with high energy density and long cycle life.",

keywords = "78Li2S-22P2S5 electrolytes, Battery performance, Interfacial resistance, Li-ion conductivity, Operating temperature, Volume changes",

author = "Chaochao WEI and Xinrong LIU and Chuang YU and Shaoqing CHEN and Shuai CHEN and Shijie CHENG and Jia XIE",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

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doi = "10.1016/j.cclet.2022.107859",

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T1 - Revealing performance of 78Li2S-22P2S5 glass ceramic based solid-state batteries at different operating temperatures

AU - WEI, Chaochao

AU - LIU, Xinrong

AU - YU, Chuang

AU - CHEN, Shaoqing

AU - CHEN, Shuai

AU - CHENG, Shijie

AU - XIE, Jia

PY - 2023/7

Y1 - 2023/7

N2 - 78Li2S-22P2S5 are sulfide electrolytes with high lithium-ion conductivity and wide electrochemical windows in the Li2S-P2S5 system, making them attractive solid electrolytes for ASSLBs. However, the role and potential of 78Li2S-22P2S5 solid electrolytes over a wide temperature range are still not fully understood. Therefore, we constructed solid-state batteries with NCM622 as the positive electrode and 78Li2S-22P2S5 glass-ceramics as the electrolyte to investigate in depth the differences in battery performance over a wide temperature range and their intrinsic mechanisms. The in-situ impedance and relaxation time distribution (DRT) demonstrated the electrochemical stability of the electrolyte over a wide temperature range, while the in-situ stacking pressure observed a large volume change during cycling at 60 °C, leading to local solid-solid contact failure and poor cycling stability. This study provides insight into the advantages and problems of 78Li2S-22P2S5 in the wide temperature range as well as a basis for the construction of ASSLBs with high energy density and long cycle life.

AB - 78Li2S-22P2S5 are sulfide electrolytes with high lithium-ion conductivity and wide electrochemical windows in the Li2S-P2S5 system, making them attractive solid electrolytes for ASSLBs. However, the role and potential of 78Li2S-22P2S5 solid electrolytes over a wide temperature range are still not fully understood. Therefore, we constructed solid-state batteries with NCM622 as the positive electrode and 78Li2S-22P2S5 glass-ceramics as the electrolyte to investigate in depth the differences in battery performance over a wide temperature range and their intrinsic mechanisms. The in-situ impedance and relaxation time distribution (DRT) demonstrated the electrochemical stability of the electrolyte over a wide temperature range, while the in-situ stacking pressure observed a large volume change during cycling at 60 °C, leading to local solid-solid contact failure and poor cycling stability. This study provides insight into the advantages and problems of 78Li2S-22P2S5 in the wide temperature range as well as a basis for the construction of ASSLBs with high energy density and long cycle life.

KW - 78Li2S-22P2S5 electrolytes

KW - Battery performance

KW - Interfacial resistance

KW - Li-ion conductivity

KW - Operating temperature

KW - Volume changes

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DO - 10.1016/j.cclet.2022.107859

M3 - Journal Article (refereed)

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