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Title: Building ultraconformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes

Abstract

Despite their relatively high capacity, layered lithium transition metal oxides suffer from crystal and interfacial structural instability under aggressive electrochemical and thermal driving forces, leading to rapid performance degradation and severe safety concerns. Here we report a transformative approach using an oxidative chemical vapour deposition technique to build a protective conductive polymer (poly(3,4-ethylenedioxythiophene)) skin on layered oxide cathode materials. The ultraconformal poly(3,4-ethylenedioxythiophene) skin facilitates the transport of lithium ions and electrons, significantly suppresses the undesired layered to spinel/rock-salt phase transformation and the associated oxygen loss, mitigates intergranular and intragranular mechanical cracking, and effectively stabilizes the cathode-electrolyte interface. This approach remarkably enhances the capacity and thermal stability under high-voltage operation. Building a protective skin at both secondary and primary particle levels of layered oxides offers a promising design strategy for Ni-rich cathodes towards high-energy, long-life and safe lithium-ion batteries.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technologies (VTO) - Battery Materials Research (BMR) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1530379
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Nature Energy
Additional Journal Information:
Journal Volume: 4; Journal Issue: 8
Country of Publication:
United States
Language:
English

Citation Formats

Xu, Gui-Liang, Liu, Qiang, Lau, Kenneth K.S., Liu, Yuzi, Liu, Xiang, Gao, Han, Zhou, Xinwei, Zhuang, Minghao, Ren, Yang, Li, Jiadong, Shao, Minhua, Ouyang, Minggao, Pan, Feng, Chen, Zonghai, Amine, Khalil, and Chen, Guohua. Building ultraconformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes. United States: N. p., 2019. Web. doi:10.1038/s41560-019-0387-1.
Xu, Gui-Liang, Liu, Qiang, Lau, Kenneth K.S., Liu, Yuzi, Liu, Xiang, Gao, Han, Zhou, Xinwei, Zhuang, Minghao, Ren, Yang, Li, Jiadong, Shao, Minhua, Ouyang, Minggao, Pan, Feng, Chen, Zonghai, Amine, Khalil, & Chen, Guohua. Building ultraconformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes. United States. doi:10.1038/s41560-019-0387-1.
Xu, Gui-Liang, Liu, Qiang, Lau, Kenneth K.S., Liu, Yuzi, Liu, Xiang, Gao, Han, Zhou, Xinwei, Zhuang, Minghao, Ren, Yang, Li, Jiadong, Shao, Minhua, Ouyang, Minggao, Pan, Feng, Chen, Zonghai, Amine, Khalil, and Chen, Guohua. Sat . "Building ultraconformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes". United States. doi:10.1038/s41560-019-0387-1.
@article{osti_1530379,
title = {Building ultraconformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes},
author = {Xu, Gui-Liang and Liu, Qiang and Lau, Kenneth K.S. and Liu, Yuzi and Liu, Xiang and Gao, Han and Zhou, Xinwei and Zhuang, Minghao and Ren, Yang and Li, Jiadong and Shao, Minhua and Ouyang, Minggao and Pan, Feng and Chen, Zonghai and Amine, Khalil and Chen, Guohua},
abstractNote = {Despite their relatively high capacity, layered lithium transition metal oxides suffer from crystal and interfacial structural instability under aggressive electrochemical and thermal driving forces, leading to rapid performance degradation and severe safety concerns. Here we report a transformative approach using an oxidative chemical vapour deposition technique to build a protective conductive polymer (poly(3,4-ethylenedioxythiophene)) skin on layered oxide cathode materials. The ultraconformal poly(3,4-ethylenedioxythiophene) skin facilitates the transport of lithium ions and electrons, significantly suppresses the undesired layered to spinel/rock-salt phase transformation and the associated oxygen loss, mitigates intergranular and intragranular mechanical cracking, and effectively stabilizes the cathode-electrolyte interface. This approach remarkably enhances the capacity and thermal stability under high-voltage operation. Building a protective skin at both secondary and primary particle levels of layered oxides offers a promising design strategy for Ni-rich cathodes towards high-energy, long-life and safe lithium-ion batteries.},
doi = {10.1038/s41560-019-0387-1},
journal = {Nature Energy},
number = 8,
volume = 4,
place = {United States},
year = {2019},
month = {6}
}