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Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries

Lithium–manganese-based cathode materials have attracted much attention due to its high specific capacity, but the low initial coulomb efficiency, poor rate performance and voltage attenuation during cycling limit its application. In this work, Li(1.2)Ni(0.16)Co(0.08)Mn(0.56−x)V(x)O(2) samples (x =...

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Detalles Bibliográficos
Autores principales: Zhou, Miaomiao, Zhao, Jianjun, Wang, Xiaodong, Shen, Ji, Yang, Jin-Lin, Tang, Wenhao, Deng, Yirui, Zhao, Shi-Xi, Liu, Ruiping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9667372/
https://www.ncbi.nlm.nih.gov/pubmed/36425168
http://dx.doi.org/10.1039/d2ra05126e
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author Zhou, Miaomiao
Zhao, Jianjun
Wang, Xiaodong
Shen, Ji
Yang, Jin-Lin
Tang, Wenhao
Deng, Yirui
Zhao, Shi-Xi
Liu, Ruiping
author_facet Zhou, Miaomiao
Zhao, Jianjun
Wang, Xiaodong
Shen, Ji
Yang, Jin-Lin
Tang, Wenhao
Deng, Yirui
Zhao, Shi-Xi
Liu, Ruiping
author_sort Zhou, Miaomiao
collection PubMed
description Lithium–manganese-based cathode materials have attracted much attention due to its high specific capacity, but the low initial coulomb efficiency, poor rate performance and voltage attenuation during cycling limit its application. In this work, Li(1.2)Ni(0.16)Co(0.08)Mn(0.56−x)V(x)O(2) samples (x = 0, 0.005, 0.01, 0.02, 0.05) were prepared using the sol–gel method, and the effects of different V(5+) contents on the structure, valence state, and electrochemical performance of electrode materials were investigated. The results show that the introduction of high-valence V(5+) in cathode materials can reduce partial Mn(4+) to active Mn(3+) ions for charge conservation, which not only improves the discharge capacity and coulomb efficiency of Li-rich manganese-based cathode materials, but also inhibits the voltage attenuation. The initial discharge capacity of the Li(1.2)Ni(0.16)Co(0.08)Mn(0.55)V(0.01)O(2) is as high as 280.9 mA h g(−1) with coulomb efficiency of 77.7% at 0.05C, which is much higher than that of the undoped pristine sample (236.6 mA h g(−1) with coulomb efficiency of 74.0%). After 100 cycles at 0.1C, the capacity retention rate of Li(1.2)Ni(0.16)Co(0.08)Mn(0.55)V(0.01)O(2) was 92.3% with the median voltage retention rate of 95.6%. This work provides a new idea for high performance of lithium-rich manganese-based cathode materials.
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spelling pubmed-96673722022-11-23 Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries Zhou, Miaomiao Zhao, Jianjun Wang, Xiaodong Shen, Ji Yang, Jin-Lin Tang, Wenhao Deng, Yirui Zhao, Shi-Xi Liu, Ruiping RSC Adv Chemistry Lithium–manganese-based cathode materials have attracted much attention due to its high specific capacity, but the low initial coulomb efficiency, poor rate performance and voltage attenuation during cycling limit its application. In this work, Li(1.2)Ni(0.16)Co(0.08)Mn(0.56−x)V(x)O(2) samples (x = 0, 0.005, 0.01, 0.02, 0.05) were prepared using the sol–gel method, and the effects of different V(5+) contents on the structure, valence state, and electrochemical performance of electrode materials were investigated. The results show that the introduction of high-valence V(5+) in cathode materials can reduce partial Mn(4+) to active Mn(3+) ions for charge conservation, which not only improves the discharge capacity and coulomb efficiency of Li-rich manganese-based cathode materials, but also inhibits the voltage attenuation. The initial discharge capacity of the Li(1.2)Ni(0.16)Co(0.08)Mn(0.55)V(0.01)O(2) is as high as 280.9 mA h g(−1) with coulomb efficiency of 77.7% at 0.05C, which is much higher than that of the undoped pristine sample (236.6 mA h g(−1) with coulomb efficiency of 74.0%). After 100 cycles at 0.1C, the capacity retention rate of Li(1.2)Ni(0.16)Co(0.08)Mn(0.55)V(0.01)O(2) was 92.3% with the median voltage retention rate of 95.6%. This work provides a new idea for high performance of lithium-rich manganese-based cathode materials. The Royal Society of Chemistry 2022-11-16 /pmc/articles/PMC9667372/ /pubmed/36425168 http://dx.doi.org/10.1039/d2ra05126e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Zhou, Miaomiao
Zhao, Jianjun
Wang, Xiaodong
Shen, Ji
Yang, Jin-Lin
Tang, Wenhao
Deng, Yirui
Zhao, Shi-Xi
Liu, Ruiping
Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries
title Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries
title_full Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries
title_fullStr Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries
title_full_unstemmed Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries
title_short Enhanced stability of vanadium-doped Li(1.2)Ni(0.16)Co(0.08)Mn(0.56)O(2) cathode materials for superior Li-ion batteries
title_sort enhanced stability of vanadium-doped li(1.2)ni(0.16)co(0.08)mn(0.56)o(2) cathode materials for superior li-ion batteries
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9667372/
https://www.ncbi.nlm.nih.gov/pubmed/36425168
http://dx.doi.org/10.1039/d2ra05126e
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