Efficient electrode material of restacked Na-V2O5-graphene nanocomposite for Na-ion batteries

被引：12

作者：

Park, Boyeon ^{[1
]}

Oh, Seung Mi ^{[1
]}

Jo, Yun Kyung ^{[1
]}

Hwang, Seong-Ju ^{[1
]}

机构：

[1] Ewha Womans Univ, Coll Nat Sci, Dept Chem & Nanosci, Seoul 03760, South Korea

来源：

MATERIALS LETTERS | 2016年 / 178卷

基金：

新加坡国家研究基金会;

关键词：

Nanosheets; Restacking; Nanocomposites; Reduced graphene oxide; Vanadium oxide; Na-ion batteries; REDUCED GRAPHENE OXIDE; VANADIUM; NANOSHEETS; COMPOSITE; NANOBELTS;

D O I：

10.1016/j.matlet.2016.04.161

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Efficient electrode material of Na-V2O5-reduced graphene oxide (rG-O) nanocomposite is synthesized by the restacking of anionic component nanosheets with Na+ ions at room temperature. The restacked Na-V2O5-rG-O nanocomposite shows layer-by-layer-ordered structure of V2O5/rG-O nanosheets and Na+ ions with mesoporous stacking structure and expanded surface area. Upon the restacking with rG-O, the pentavalent V5+ oxidation state and layered lattice of vanadium oxide nanosheet remain unchanged. The composite formation with rG-O leads to a significant enhancement of the discharge capacity from 50 to 150 mAh g(-1) as cathode material for Na-ion batteries, underscoring the usefulness of restacking between metal oxide and rG-O nanosheets in exploring novel nanocomposite electrode materials. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：79 / 82

页数：4

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