V2O5 Nanospheres with Mixed Vanadium Valences as High Electrochemically Active Aqueous Zinc-Ion Battery Cathode-Reference-Cited by-同舟云学术

V2O5 Nanospheres with Mixed Vanadium Valences as High Electrochemically Active Aqueous Zinc-Ion Battery Cathode

Published:2019-03-22 Issue:1 Volume:11 Page:
ISSN:2311-6706
Container-title:Nano-Micro Letters
language:en
Short-container-title:Nano-Micro Lett.

Author:

Liu Fei,Chen Zixian,Fang Guozhao,Wang Ziqing,Cai Yangsheng,Tang Boya,Zhou Jiang,Liang Shuquan

Abstract

Abstract A V4+-V2O5 cathode with mixed vanadium valences was prepared via a novel synthetic method using VOOH as the precursor, and its zinc-ion storage performance was evaluated. The products are hollow spheres consisting of nanoflakes. The V4+-V2O5 cathode exhibits a prominent cycling performance, with a specific capacity of 140 mAh g−1 after 1000 cycles at 10 A g−1, and an excellent rate capability. The good electrochemical performance is attributed to the presence of V4+, which leads to higher electrochemical activity, lower polarization, faster ion diffusion, and higher electrical conductivity than V2O5 without V4+. This engineering strategy of valence state manipulation may pave the way for designing high-performance cathodes for elucidating advanced battery chemistry.

Publisher

Springer Science and Business Media LLC

Subject

Electrical and Electronic Engineering,Surfaces, Coatings and Films,Electronic, Optical and Magnetic Materials

Link

http://link.springer.com/content/pdf/10.1007/s40820-019-0256-2.pdf

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