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Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating

Li-rich manganese-based cathode materials (LRMs) are considered one of the most promising cathode materials for the next generation of lithium-ion batteries (LIBs) because of their high energy density. However, there are problems such as a capacity decay, poor rate performance, and continuous voltag...

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Autores principales: Zhang, Shuhao, Ye, Yun, Chen, Zhaoxiong, Lai, Qinghao, Liu, Tie, Wang, Qiang, Yuan, Shuang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456268/
https://www.ncbi.nlm.nih.gov/pubmed/37629947
http://dx.doi.org/10.3390/ma16165655
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author Zhang, Shuhao
Ye, Yun
Chen, Zhaoxiong
Lai, Qinghao
Liu, Tie
Wang, Qiang
Yuan, Shuang
author_facet Zhang, Shuhao
Ye, Yun
Chen, Zhaoxiong
Lai, Qinghao
Liu, Tie
Wang, Qiang
Yuan, Shuang
author_sort Zhang, Shuhao
collection PubMed
description Li-rich manganese-based cathode materials (LRMs) are considered one of the most promising cathode materials for the next generation of lithium-ion batteries (LIBs) because of their high energy density. However, there are problems such as a capacity decay, poor rate performance, and continuous voltage drop, which seriously limit their large-scale commercial applications. In this work, Li(1.2)Mn(0.54)Co(0.13)Ni(0.13)O(2) coated with Li(2)MoO(4) with a unique spinel structure was prepared with the wet chemistry method and the subsequent calcination process. The Li(2)MoO(4) coating layer with a spinel structure could provide a 3D Li(+) transport channel, which is beneficial for improving rate performance, while protecting LRMs from electrolyte corrosion, suppressing interface side reactions, and improving cycling stability. The capacity retention rate of LRMs coated with 3 wt% Li(2)MoO(4) increased from 69.25% to 81.85% after 100 cycles at 1 C, and the voltage attenuation decreased from 7.06 to 4.98 mV per cycle. The lower R(ct) also exhibited an improved rate performance. The results indicate that the Li(2)MoO(4) coating effectively improves the cyclic stability and electrochemical performance of LRMs.
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spelling pubmed-104562682023-08-26 Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating Zhang, Shuhao Ye, Yun Chen, Zhaoxiong Lai, Qinghao Liu, Tie Wang, Qiang Yuan, Shuang Materials (Basel) Article Li-rich manganese-based cathode materials (LRMs) are considered one of the most promising cathode materials for the next generation of lithium-ion batteries (LIBs) because of their high energy density. However, there are problems such as a capacity decay, poor rate performance, and continuous voltage drop, which seriously limit their large-scale commercial applications. In this work, Li(1.2)Mn(0.54)Co(0.13)Ni(0.13)O(2) coated with Li(2)MoO(4) with a unique spinel structure was prepared with the wet chemistry method and the subsequent calcination process. The Li(2)MoO(4) coating layer with a spinel structure could provide a 3D Li(+) transport channel, which is beneficial for improving rate performance, while protecting LRMs from electrolyte corrosion, suppressing interface side reactions, and improving cycling stability. The capacity retention rate of LRMs coated with 3 wt% Li(2)MoO(4) increased from 69.25% to 81.85% after 100 cycles at 1 C, and the voltage attenuation decreased from 7.06 to 4.98 mV per cycle. The lower R(ct) also exhibited an improved rate performance. The results indicate that the Li(2)MoO(4) coating effectively improves the cyclic stability and electrochemical performance of LRMs. MDPI 2023-08-17 /pmc/articles/PMC10456268/ /pubmed/37629947 http://dx.doi.org/10.3390/ma16165655 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Shuhao
Ye, Yun
Chen, Zhaoxiong
Lai, Qinghao
Liu, Tie
Wang, Qiang
Yuan, Shuang
Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating
title Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating
title_full Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating
title_fullStr Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating
title_full_unstemmed Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating
title_short Improved Electrochemical Performance of Li-Rich Cathode Materials via Spinel Li(2)MoO(4) Coating
title_sort improved electrochemical performance of li-rich cathode materials via spinel li(2)moo(4) coating
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456268/
https://www.ncbi.nlm.nih.gov/pubmed/37629947
http://dx.doi.org/10.3390/ma16165655
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