Enhanced electrochemical performance of ammonium vanadium bronze through sodium intercalation and optimization of electrolyte

被引：15

作者：

Fei, Hailong ^{[1
]}

Liu, Xin ^{[1
]}

Li, Huan ^{[1
]}

Wei, Mingdeng ^{[1
]}

机构：

[1] Fuzhou Univ, Inst Adv Energy Mat, Fuzhou 350002, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2014年 / 418卷

基金：

美国国家科学基金会;

关键词：

Vanadium bronze; Intercalation; Cathode; Sodium-ion battery; Raman; Bi-cation; Hydrothermal; Oxalic acid; Sodium nitrate; Ammonium metavanadate; CATHODE MATERIAL; ION; INSERTION;

D O I：

10.1016/j.jcis.2013.12.022

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：

A new type of platelet-like ammonium vanadium bronze (NH4)(2)V(6)0(16) is first used as cathode material for Na-ion battery. The discharge capacity and cycling stability is improved by the intercalation of Na+ and using NaPF6 as electrolyte. Raman spectrum shows that the crystalline structure of (NH4)2V6016 is changed after the intercalation of Na+ to (NH4)2V6016. Furthermore, the obtained sodium ammonium vanadium bronze shows smaller charge transfer resistance than (NH4)2V6016, which would favor superior discharge capacity and good cycling stability. Additionally, NaPF6 is prior to NaCl0(4) as electrolyte for ammonium vanadium bronze cathode materials. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：273 / 276

页数：4

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