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Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material

The effect of electrochemically active MnO(2) as a coating material on the electrochemical properties of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) (LTMO) cathode material is explored in this article. The structural analysis indicated that the layered structure of the LTMO was unchanged after the modific...

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Autores principales: Li, Zhong, Yang, Peiyue, Zheng, Zhongxiang, Pan, Qiyun, Liu, Yisi, Li, Yao, Xuan, Jinnan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622658/
https://www.ncbi.nlm.nih.gov/pubmed/34832820
http://dx.doi.org/10.3390/mi12111410
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author Li, Zhong
Yang, Peiyue
Zheng, Zhongxiang
Pan, Qiyun
Liu, Yisi
Li, Yao
Xuan, Jinnan
author_facet Li, Zhong
Yang, Peiyue
Zheng, Zhongxiang
Pan, Qiyun
Liu, Yisi
Li, Yao
Xuan, Jinnan
author_sort Li, Zhong
collection PubMed
description The effect of electrochemically active MnO(2) as a coating material on the electrochemical properties of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) (LTMO) cathode material is explored in this article. The structural analysis indicated that the layered structure of the LTMO was unchanged after the modification with MnO(2). The morphology inspection demonstrated that the rod-like LTMO particles were encapsulated by a compact coating layer. The MnO(2) layer was able to hinder the electrolyte solution from corroding the LTMO particles and optimized the formation of a solid electrolyte interface (SEI). Meanwhile, lithium ions were reversibly inserted into and extracted from MnO(2), which afforded an additional capacity. Compared with the bare LTMO, the MnO(2)-coated sample exhibited enhanced electrochemical performance. After the MnO(2) coating, the first discharge capacity rose from 224.2 to 239.1 mAh/g, and the initial irreversible capacity loss declined from 78.2 to 46.0 mAh/g. Meanwhile, the cyclic retention climbed up to 88.2% after 100 cycles at 0.5 C, which was more competitive than that of the bare LTMO with a value of 71.1%. When discharging at a high current density of 2 C, the capacity increased from 100.5 to 136.9 mAh/g after the modification. These investigations may be conducive to the practical application of LTMO in prospective automotive Li-ion batteries.
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spelling pubmed-86226582021-11-27 Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material Li, Zhong Yang, Peiyue Zheng, Zhongxiang Pan, Qiyun Liu, Yisi Li, Yao Xuan, Jinnan Micromachines (Basel) Article The effect of electrochemically active MnO(2) as a coating material on the electrochemical properties of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) (LTMO) cathode material is explored in this article. The structural analysis indicated that the layered structure of the LTMO was unchanged after the modification with MnO(2). The morphology inspection demonstrated that the rod-like LTMO particles were encapsulated by a compact coating layer. The MnO(2) layer was able to hinder the electrolyte solution from corroding the LTMO particles and optimized the formation of a solid electrolyte interface (SEI). Meanwhile, lithium ions were reversibly inserted into and extracted from MnO(2), which afforded an additional capacity. Compared with the bare LTMO, the MnO(2)-coated sample exhibited enhanced electrochemical performance. After the MnO(2) coating, the first discharge capacity rose from 224.2 to 239.1 mAh/g, and the initial irreversible capacity loss declined from 78.2 to 46.0 mAh/g. Meanwhile, the cyclic retention climbed up to 88.2% after 100 cycles at 0.5 C, which was more competitive than that of the bare LTMO with a value of 71.1%. When discharging at a high current density of 2 C, the capacity increased from 100.5 to 136.9 mAh/g after the modification. These investigations may be conducive to the practical application of LTMO in prospective automotive Li-ion batteries. MDPI 2021-11-17 /pmc/articles/PMC8622658/ /pubmed/34832820 http://dx.doi.org/10.3390/mi12111410 Text en © 2021 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
Li, Zhong
Yang, Peiyue
Zheng, Zhongxiang
Pan, Qiyun
Liu, Yisi
Li, Yao
Xuan, Jinnan
Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material
title Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material
title_full Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material
title_fullStr Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material
title_full_unstemmed Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material
title_short Exploring the Effect of a MnO(2) Coating on the Electrochemical Performance of a Li(1.2)Mn(0.54)Ni(0.13)Co(0.13)O(2) Cathode Material
title_sort exploring the effect of a mno(2) coating on the electrochemical performance of a li(1.2)mn(0.54)ni(0.13)co(0.13)o(2) cathode material
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622658/
https://www.ncbi.nlm.nih.gov/pubmed/34832820
http://dx.doi.org/10.3390/mi12111410
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