Ambient redox synthesis of vanadium-doped manganese dioxide nanoparticles and their enhanced zinc storage properties

被引：150

作者：

Alfaruqi, Muhammad Hilmy ^{[1
]}

Islam, Saiful ^{[1
]}

Mathew, Vinod ^{[1
]}

Song, Jinju ^{[1
]}

Kim, Sungjin ^{[1
]}

Duong Pham Tung ^{[1
]}

Jo, Jeonggeun ^{[1
]}

Kim, Seokhun ^{[1
]}

Baboo, Joseph Paul ^{[1
]}

Xiu, Zhiliang ^{[1
]}

Kim, Jaekook ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Mat Sci & Engn, 300 Yongbong Dong, Gwangju 500757, South Korea

来源：

APPLIED SURFACE SCIENCE | 2017年 / 404卷

基金：

新加坡国家研究基金会;

关键词：

Manganese dioxide; Transition metal doping; Electrode; Electrochemical properties; Zinc-ion batteries; ELECTROCHEMICAL PROPERTIES; ENERGY-STORAGE; BATTERIES; MNO2; CATHODE;

D O I：

10.1016/j.apsusc.2017.02.009

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：

In this work, we demonstrate the first use of a V-doped MnO2 nanoparticle electrode for zinc-ion battery (ZIB) applications. The V-doped MnO2 was prepared via a simple redox reaction and the X-ray diffraction studies confirmed the formation of pure MnO2, accompanied by an anisotropic expansion of MnO2 lattice, suggesting the incorporation of V-ions into the MnO2 framework. V doping of MnO2 not only increased the specific surface area but also improved the electronic conductivity. When Zn-storage properties were tested, the V-doped MnO2 electrode registered a higher discharge capacity of 266 mAh g(-1) compared to 213 mAh g(-1) for the pure MnO2 electrode. On prolonged cycling, the doped electrode retained 31% higher capacity than that of the bare MnO2 electrode and thereby demonstrated superior cycling performance. This study may pave the way towards understanding the enhancement of the energy storage properties via doping in electrodes of aqueous ZIB applications and also furthers the efforts for the practical realization of a potential eco-friendly battery system. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：435 / 442

页数：8

共 30 条

[1] Electrochemically Induced Structural Transformation in a γ-MnO2 Cathode of a High Capacity Zinc-Ion Battery System [J].