Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries

Abstract High-energy–density lithium-ion batteries (LIBs) that can be safely fast-charged are desirable for electric vehicles. However, sub-optimal lithiation potential and low capacity of commonly used LIBs anode cause safety issues and low energy density. Here we hypothesize that a cobalt vanadate...

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Autores principales:	Jinghui Ren, Zhenyu Wang, Peng Xu, Cong Wang, Fei Gao, Decheng Zhao, Shupei Liu, Han Yang, Di Wang, Chunming Niu, Yusong Zhu, Yutong Wu, Xiang Liu, Zhoulu Wang, Yi Zhang
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Lithium-ion batteries Anode Fast-charging High-energy Cobalt vanadate oxide Technology T
Acceso en línea:	https://doaj.org/article/4b887a501a8a4ada8c64555e4407424f
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spelling	oai:doaj.org-article:4b887a501a8a4ada8c64555e4407424f2021-12-05T12:04:54ZPorous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries10.1007/s40820-021-00758-52311-67062150-5551https://doaj.org/article/4b887a501a8a4ada8c64555e4407424f2021-12-01T00:00:00Zhttps://doi.org/10.1007/s40820-021-00758-5https://doaj.org/toc/2311-6706https://doaj.org/toc/2150-5551Abstract High-energy–density lithium-ion batteries (LIBs) that can be safely fast-charged are desirable for electric vehicles. However, sub-optimal lithiation potential and low capacity of commonly used LIBs anode cause safety issues and low energy density. Here we hypothesize that a cobalt vanadate oxide, Co2VO4, can be attractive anode material for fast-charging LIBs due to its high capacity (~ 1000 mAh g−1) and safe lithiation potential (~ 0.65 V vs. Li+/Li). The Li+ diffusion coefficient of Co2VO4 is evaluated by theoretical calculation to be as high as 3.15 × 10–10 cm2 s−1, proving Co2VO4 a promising anode in fast-charging LIBs. A hexagonal porous Co2VO4 nanodisk (PCVO ND) structure is designed accordingly, featuring a high specific surface area of 74.57 m2 g−1 and numerous pores with a pore size of 14 nm. This unique structure succeeds in enhancing Li+ and electron transfer, leading to superior fast-charging performance than current commercial anodes. As a result, the PCVO ND shows a high initial reversible capacity of 911.0 mAh g−1 at 0.4 C, excellent fast-charging capacity (344.3 mAh g−1 at 10 C for 1000 cycles), outstanding long-term cycling stability (only 0.024% capacity loss per cycle at 10 C for 1000 cycles), confirming the commercial feasibility of PCVO ND in fast-charging LIBs.Jinghui RenZhenyu WangPeng XuCong WangFei GaoDecheng ZhaoShupei LiuHan YangDi WangChunming NiuYusong ZhuYutong WuXiang LiuZhoulu WangYi ZhangSpringerOpenarticleLithium-ion batteriesAnodeFast-chargingHigh-energyCobalt vanadate oxideTechnologyTENNano-Micro Letters, Vol 14, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Lithium-ion batteries Anode Fast-charging High-energy Cobalt vanadate oxide Technology T
spellingShingle	Lithium-ion batteries Anode Fast-charging High-energy Cobalt vanadate oxide Technology T Jinghui Ren Zhenyu Wang Peng Xu Cong Wang Fei Gao Decheng Zhao Shupei Liu Han Yang Di Wang Chunming Niu Yusong Zhu Yutong Wu Xiang Liu Zhoulu Wang Yi Zhang Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries
description	Abstract High-energy–density lithium-ion batteries (LIBs) that can be safely fast-charged are desirable for electric vehicles. However, sub-optimal lithiation potential and low capacity of commonly used LIBs anode cause safety issues and low energy density. Here we hypothesize that a cobalt vanadate oxide, Co2VO4, can be attractive anode material for fast-charging LIBs due to its high capacity (~ 1000 mAh g−1) and safe lithiation potential (~ 0.65 V vs. Li+/Li). The Li+ diffusion coefficient of Co2VO4 is evaluated by theoretical calculation to be as high as 3.15 × 10–10 cm2 s−1, proving Co2VO4 a promising anode in fast-charging LIBs. A hexagonal porous Co2VO4 nanodisk (PCVO ND) structure is designed accordingly, featuring a high specific surface area of 74.57 m2 g−1 and numerous pores with a pore size of 14 nm. This unique structure succeeds in enhancing Li+ and electron transfer, leading to superior fast-charging performance than current commercial anodes. As a result, the PCVO ND shows a high initial reversible capacity of 911.0 mAh g−1 at 0.4 C, excellent fast-charging capacity (344.3 mAh g−1 at 10 C for 1000 cycles), outstanding long-term cycling stability (only 0.024% capacity loss per cycle at 10 C for 1000 cycles), confirming the commercial feasibility of PCVO ND in fast-charging LIBs.
format	article
author	Jinghui Ren Zhenyu Wang Peng Xu Cong Wang Fei Gao Decheng Zhao Shupei Liu Han Yang Di Wang Chunming Niu Yusong Zhu Yutong Wu Xiang Liu Zhoulu Wang Yi Zhang
author_facet	Jinghui Ren Zhenyu Wang Peng Xu Cong Wang Fei Gao Decheng Zhao Shupei Liu Han Yang Di Wang Chunming Niu Yusong Zhu Yutong Wu Xiang Liu Zhoulu Wang Yi Zhang
author_sort	Jinghui Ren
title	Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries
title_short	Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries
title_full	Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries
title_fullStr	Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries
title_full_unstemmed	Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries
title_sort	porous co2vo4 nanodisk as a high-energy and fast-charging anode for lithium-ion batteries
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/4b887a501a8a4ada8c64555e4407424f
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Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries

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