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Zinc Pyrovanadate Nanoplates Embedded in Graphene Networks with Enhanced Electrochemical Performance

Yang YuState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaChaojiang NiuState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaChunhua HanState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaKangning ZhaoState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaJiashen MengState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaXiaoming XuState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaPengfei ZhangDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, ChinaLei WangState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaYuzhu WuState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaLiqiang MaiState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China

2016en

ABI

Annotatsiya

Transition metal vanadates have gradually caputured reseachers’ attention as anode materials for lithium ion batteries, because of their high specific capacity and relatively high chemical stability. However, they suffer from low rate performance and short cycling performance because of the intrinsic low electronic conductivity and large volume variation during lithiation and delithiation. Here we report a design of zinc pyrovanadate nanoplates embedded in graphene networks through a facile one-pot hydrothermal method. Benefiting from graphene and zinc pyrovanadate nanoplates, this nanocomposite possesses high specific capacity, excellent rate capability, and superior cycling stability. Particularly, it exhibits a high reversible capacity of 902 mA h g–1 at 500 mA g–1, maintaining 854 mA h g–1 after 400 cycles. The impressive electrochemical performance makes it a promising anode material for lithium ion batteries.

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Identifikatorlar

DOI: 10.1021/acs.iecr.5b04811

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