Structural Understanding for High-Voltage Stabilization of Lithium Cobalt Oxide

Cong Lin; Jianyuan Li; Zu-Wei Yin; Weiyuan Huang; Qinghe Zhao; Qingsong Weng; Qiang Liu; Junliang Sun; Guohua Chen; Feng Pan

doi:10.1002/adma.202307404

Structural Understanding for High-Voltage Stabilization of Lithium Cobalt Oxide

Cong Lin^*
, Jianyuan Li
, Zu-Wei Yin^*
, Weiyuan Huang
, Qinghe Zhao
, Qingsong Weng
, Qiang Liu
, Junliang Sun
, Guohua Chen^*
, Feng Pan^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

224 Citations (Scopus)

Abstract

The rapid development of modern consumer electronics is placing higher demands on the lithium cobalt oxide (LiCoO₂; LCO) cathode that powers them. Increasing operating voltage is exclusively effective in boosting LCO capacity and energy density but is inhibited by the innate high-voltage instability of the LCO structure that serves as the foundation and determinant of its electrochemical behavior in lithium-ion batteries. This has stimulated extensive research on LCO structural stabilization. Here, it is focused on the fundamental structural understanding of LCO cathode from long-term studies. Multi-scale structures concerning LCO bulk and surface and various structural issues along with their origins and corresponding stabilization strategies with specific mechanisms are uncovered and elucidated at length, which will certainly deepen and advance the knowledge of LCO structure and further its inherent relationship with electrochemical performance. Based on these understandings, remaining questions and opportunities for future stabilization of the LCO structure are also emphasized. © 2023 Wiley-VCH GmbH.

Original language	English
Article number	2307404
Journal	Advanced Materials
Volume	36
Issue number	6
Online published	23 Oct 2023
DOIs	https://doi.org/10.1002/adma.202307404
Publication status	Published - 8 Feb 2024
Externally published	Yes

Funding

The authors acknowledge the financial support from the Basic and Applied Basic Research Foundation of Guangdong Province (No. 2021B1515130002), the Soft Science Research Project of Guangdong Province (No. 2017B030301013), the Shenzhen Science and Technology Research Grant (No. ZDSYS201707281026184), the Hong Kong Research Grants Council (General Research Fund, No. 15221719), and the Guangdong Provincial Fund for Fundamental and Applied Research (No. 2021B1515130002).

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

lithium cobalt oxide
lithium-ion batteries
structural modifications
structural understandings
structure–performance relationship

RGC Funding Information

RGC-funded

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10.1002/adma.202307404

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Cite this

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title = "Structural Understanding for High-Voltage Stabilization of Lithium Cobalt Oxide",

abstract = "The rapid development of modern consumer electronics is placing higher demands on the lithium cobalt oxide (LiCoO2; LCO) cathode that powers them. Increasing operating voltage is exclusively effective in boosting LCO capacity and energy density but is inhibited by the innate high-voltage instability of the LCO structure that serves as the foundation and determinant of its electrochemical behavior in lithium-ion batteries. This has stimulated extensive research on LCO structural stabilization. Here, it is focused on the fundamental structural understanding of LCO cathode from long-term studies. Multi-scale structures concerning LCO bulk and surface and various structural issues along with their origins and corresponding stabilization strategies with specific mechanisms are uncovered and elucidated at length, which will certainly deepen and advance the knowledge of LCO structure and further its inherent relationship with electrochemical performance. Based on these understandings, remaining questions and opportunities for future stabilization of the LCO structure are also emphasized. {\textcopyright} 2023 Wiley-VCH GmbH.",

keywords = "lithium cobalt oxide, lithium-ion batteries, structural modifications, structural understandings, structure–performance relationship",

author = "Cong Lin and Jianyuan Li and Zu-Wei Yin and Weiyuan Huang and Qinghe Zhao and Qingsong Weng and Qiang Liu and Junliang Sun and Guohua Chen and Feng Pan",

year = "2024",

month = feb,

day = "8",

doi = "10.1002/adma.202307404",

language = "English",

volume = "36",

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T1 - Structural Understanding for High-Voltage Stabilization of Lithium Cobalt Oxide

AU - Lin, Cong

AU - Li, Jianyuan

AU - Yin, Zu-Wei

AU - Huang, Weiyuan

AU - Zhao, Qinghe

AU - Weng, Qingsong

AU - Liu, Qiang

AU - Sun, Junliang

AU - Chen, Guohua

AU - Pan, Feng

PY - 2024/2/8

Y1 - 2024/2/8

N2 - The rapid development of modern consumer electronics is placing higher demands on the lithium cobalt oxide (LiCoO2; LCO) cathode that powers them. Increasing operating voltage is exclusively effective in boosting LCO capacity and energy density but is inhibited by the innate high-voltage instability of the LCO structure that serves as the foundation and determinant of its electrochemical behavior in lithium-ion batteries. This has stimulated extensive research on LCO structural stabilization. Here, it is focused on the fundamental structural understanding of LCO cathode from long-term studies. Multi-scale structures concerning LCO bulk and surface and various structural issues along with their origins and corresponding stabilization strategies with specific mechanisms are uncovered and elucidated at length, which will certainly deepen and advance the knowledge of LCO structure and further its inherent relationship with electrochemical performance. Based on these understandings, remaining questions and opportunities for future stabilization of the LCO structure are also emphasized. © 2023 Wiley-VCH GmbH.

AB - The rapid development of modern consumer electronics is placing higher demands on the lithium cobalt oxide (LiCoO2; LCO) cathode that powers them. Increasing operating voltage is exclusively effective in boosting LCO capacity and energy density but is inhibited by the innate high-voltage instability of the LCO structure that serves as the foundation and determinant of its electrochemical behavior in lithium-ion batteries. This has stimulated extensive research on LCO structural stabilization. Here, it is focused on the fundamental structural understanding of LCO cathode from long-term studies. Multi-scale structures concerning LCO bulk and surface and various structural issues along with their origins and corresponding stabilization strategies with specific mechanisms are uncovered and elucidated at length, which will certainly deepen and advance the knowledge of LCO structure and further its inherent relationship with electrochemical performance. Based on these understandings, remaining questions and opportunities for future stabilization of the LCO structure are also emphasized. © 2023 Wiley-VCH GmbH.

KW - lithium cobalt oxide

KW - lithium-ion batteries

KW - structural modifications

KW - structural understandings

KW - structure–performance relationship

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DO - 10.1002/adma.202307404

M3 - RGC 21 - Publication in refereed journal

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SN - 0935-9648

VL - 36

JO - Advanced Materials

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ER -

Structural Understanding for High-Voltage Stabilization of Lithium Cobalt Oxide

Abstract

Funding

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Research Keywords

RGC Funding Information

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GRF: Conformal Coating of Elastomeric Conducting Polymer with Ionic Conductivity on Ni-rich Layered Cathodes for Enhanced Redox Cycle Stability of Lithium-ion Batteries

Cite this

Structural Understanding for High-Voltage Stabilization of Lithium Cobalt Oxide

Abstract

Funding

UN SDGs

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

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Projects

GRF: Conformal Coating of Elastomeric Conducting Polymer with Ionic Conductivity on Ni-rich Layered Cathodes for Enhanced Redox Cycle Stability of Lithium-ion Batteries

Cite this