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

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

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

机译：具有混合钒价的V2O5纳米球作为高电化学活性的锌离子电池正极

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AV4+-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 mAhg-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.

机译：以VOOH为前驱体，通过新颖的合成方法制备了具有混合钒价的AV4 + -V2O5阴极，并对其锌离子的储存性能进行了评估，产品为由纳米薄片组成的空心球，V4 + -V2O5阴极表现出优异的循环性能，在10 A g.1下1000次循环后的比容量为140 mAhg-1，并且具有出色的倍率性能。良好的电化学性能归因于V4 +的存在，从而导致更高的电化学活性，更低的极化，更快的离子与不使用V4 +的V2O5相比，具有更高的扩散性和更高的电导率。这种价态操纵的工程策略可能为设计高性能阴极以阐明高级电池化学方法铺平道路。

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《纳微快报：英文版》 |2019年第002期|P.98-108|共11页
作者
Fei Liu; Zixian Chen; Guozhao Fang; Ziqing Wang; Yangsheng Cai; Boya Tang; Jiang Zhou; Shuquan Liang;
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作者单位

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[2]Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[1]School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,People’s Republic of China;

[2]Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province,Central South University,Changsha 410083,Hunan,People’s Republic of China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 CHI
中图分类蓄电池;
关键词
V2O5; Mixed valences; Hollow sphere; Long-cycle-life; Aqueous zinc-ion battery;

机译：V2O5;混合价;空心球;长寿命;锌离子水溶液;
入库时间 2022-08-19 04:29:54

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

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