Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries

Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries

Potassium-ion batteries (KIBs) represent one of the most promising alternatives to lithium-ion batteries (LIBs) considering the potential low cost and abundant potassium resource. In this work, we demonstrate a core-shell structured sponge cathode for KIBs, where amorphous V2O5 uniformly coats on ca...

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Main Authors: Fangliang Ye, Dongwei Lu, Xuchun Gui, Tengrui Wang, Xiaoying Zhuang, Wei Luo, Yunhui Huang
Format: Article
Language:English
Published: Elsevier 2019-09-01
Series:Journal of Materiomics
Online Access:http://www.sciencedirect.com/science/article/pii/S2352847818300443
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spelling doaj-d5967322664a41f6986148167f3522d62020-11-24T21:24:26ZengElsevierJournal of Materiomics2352-84782019-09-0153344349Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteriesFangliang Ye0Dongwei Lu1Xuchun Gui2Tengrui Wang3Xiaoying Zhuang4Wei Luo5Yunhui Huang6Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, 510275, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, 510275, ChinaInstitute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, ChinaDepartment of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, 200092, ChinaInstitute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China; Corresponding author.Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China; Corresponding author.Potassium-ion batteries (KIBs) represent one of the most promising alternatives to lithium-ion batteries (LIBs) considering the potential low cost and abundant potassium resource. In this work, we demonstrate a core-shell structured sponge cathode for KIBs, where amorphous V2O5 uniformly coats on carbon nanotube (CNT) sponge via atomic layer deposition (ALD). The V2O5@CNT sponge shows several advantages as cathode: (1) the three-dimensional (3D) conductive network of CNT sponge offers a fast electron transport pathway, (2) the porous nature and high surface area of CNT sponge enables enough access for electrolyte to V2O5, (3) the amorphous structure of V2O5 offers a fast kinetics upon K-ion insertion/deinsertion. The V2O5@CNT sponge cathode delivers a high capacity of 206 mA h/g and moderate cycling and rate performance in common carbonate-based electrolyte system. Keywords: Potassium ion batteries, Atomic layer deposition, Amorphous vanadium oxide, Carbon nanotube spongehttp://www.sciencedirect.com/science/article/pii/S2352847818300443
collection DOAJ
language English
format Article
sources DOAJ
author Fangliang Ye
Dongwei Lu
Xuchun Gui
Tengrui Wang
Xiaoying Zhuang
Wei Luo
Yunhui Huang
spellingShingle Fangliang Ye
Dongwei Lu
Xuchun Gui
Tengrui Wang
Xiaoying Zhuang
Wei Luo
Yunhui Huang
Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries
Journal of Materiomics
author_facet Fangliang Ye
Dongwei Lu
Xuchun Gui
Tengrui Wang
Xiaoying Zhuang
Wei Luo
Yunhui Huang
author_sort Fangliang Ye
title Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries
title_short Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries
title_full Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries
title_fullStr Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries
title_full_unstemmed Atomic layer deposition of core-shell structured V2O5@CNT sponge as cathode for potassium ion batteries
title_sort atomic layer deposition of core-shell structured v2o5@cnt sponge as cathode for potassium ion batteries
publisher Elsevier
series Journal of Materiomics
issn 2352-8478
publishDate 2019-09-01
description Potassium-ion batteries (KIBs) represent one of the most promising alternatives to lithium-ion batteries (LIBs) considering the potential low cost and abundant potassium resource. In this work, we demonstrate a core-shell structured sponge cathode for KIBs, where amorphous V2O5 uniformly coats on carbon nanotube (CNT) sponge via atomic layer deposition (ALD). The V2O5@CNT sponge shows several advantages as cathode: (1) the three-dimensional (3D) conductive network of CNT sponge offers a fast electron transport pathway, (2) the porous nature and high surface area of CNT sponge enables enough access for electrolyte to V2O5, (3) the amorphous structure of V2O5 offers a fast kinetics upon K-ion insertion/deinsertion. The V2O5@CNT sponge cathode delivers a high capacity of 206 mA h/g and moderate cycling and rate performance in common carbonate-based electrolyte system. Keywords: Potassium ion batteries, Atomic layer deposition, Amorphous vanadium oxide, Carbon nanotube sponge
url http://www.sciencedirect.com/science/article/pii/S2352847818300443
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AT xuchungui atomiclayerdepositionofcoreshellstructuredv2o5cntspongeascathodeforpotassiumionbatteries
AT tengruiwang atomiclayerdepositionofcoreshellstructuredv2o5cntspongeascathodeforpotassiumionbatteries
AT xiaoyingzhuang atomiclayerdepositionofcoreshellstructuredv2o5cntspongeascathodeforpotassiumionbatteries
AT weiluo atomiclayerdepositionofcoreshellstructuredv2o5cntspongeascathodeforpotassiumionbatteries
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