FeVO4•nH2O@rGO nanocomposite as high performance cathode materials for aqueous Zn-ion batteries

被引：48

作者：

Lan, Binxu ^{[1
]}

Tang, Chen ^{[1
]}

Chen, Lineng ^{[3
]}

Zhang, Wenwei ^{[1
]}

Tang, Wen ^{[1
]}

Zuo, Chunli ^{[1
]}

Fu, Xudong ^{[1
]}

Dong, Shijie ^{[2
]}

An, Qinyou ^{[3
]}

Luo, Ping ^{[1
]}

机构：

[1] Hubei Univ Technol, Collaborat Innovat Ctr Green Light Weight Mat & P, Sch Mat & Chem Engn, Hubei Prov Key Lab Green Mat Light Ind, Wuhan 430068, Hubei, Peoples R China

[2] Hubei Univ Econ, Wuhan 430205, Hubei, Peoples R China

[3] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Hubei, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 818卷

基金：

中国国家自然科学基金; 对外科技合作项目（国际科技项目）;

关键词：

FeVO4 center dot nH(2)O@rGO; Aqueous zinc ion batteries; Cathode; Energy storage mechanism; STORAGE; ANODE;

D O I：

10.1016/j.jallcom.2019.153372

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Aqueous zinc ion batteries (ZIBs) have recently attracted an increasing attention as an environmental friendliness, low cost and highly potential novel energy storage system. Although vanadium-based materials serve as a capable of arousing and holding the attention cathode materials for ZIBs, whereas low conductivity and confusing zinc ion storage mechanisms remain an obstacle. Herein, FeVO4 center dot n-H2O@rGO composite is employed to evaluate zinc ion storage capability as a cathode for the first time in 2 M Zn(TFSI)(2) electrolyte. Benefiting from the large lattice spacing, dual electrochemical activity and fast electron transfer, the composite delivers excellent rate performance and long life cycle (the capacity retained similar to 100 mAh g(-1) at 1.0 A g(-1) after 1000 cycle). In addition, the electrochemical performance of graphene-modified FeVO4 center dot nH(2)O is superior to other precursors for comparison. Furthermore, the intercalated/de-intercalated mechanism of zinc ion is distinct from the traditional conversion reaction, which is confirmed by in-situ X-ray diffraction and various ex-situ techniques. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：8

共 56 条

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