Zhou Qingbo, Wang Linlin, Li Wenyao, Zeng Suyuan, Zhao Kangning, Yang Yujie, Wu Qian, Liu Minmin, Huang Qiu-An, Zhang Jiujun, Sun Xueliang
School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, P. R. China.
Institute for Sustainable Energy/College of Science, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China.
ACS Appl Mater Interfaces. 2021 Jun 2;13(21):25036-25043. doi: 10.1021/acsami.1c06160. Epub 2021 May 20.
In this work, several carbon-decorated NaV(PO) materials (NVP@C-750/800/850) are successfully fabricated using a sol-gel approach and subsequent heat treatment. When NVP@C-800 is used as a cathode, it shows an ultralong cycle life (2000 cycles) at a high rate of 10C, which is superior to the other two electrodes and those of reported NVP@C cathodes in the literature. The excellent results of NVP@C-800 are attributed to its nanostructure and the well-defined conductive carbon layer. The symmetric sodium (Na)-ion battery (SIB) with NVP@C-800 as both a cathode and an anode shows a high capacity at 40 mA g with a voltage plateau of about 1.79 V and energy density of 113 W h kg, revealing that NVP@C is of great application prospect.
在这项工作中，采用溶胶-凝胶法及后续热处理成功制备了几种碳修饰的NaV(PO)材料（NVP@C-750/800/850）。当NVP@C-800用作阴极时，它在10C的高倍率下表现出超长循环寿命（2000次循环），优于其他两个电极以及文献中报道的NVP@C阴极。NVP@C-800的优异结果归因于其纳米结构和明确的导电碳层。以NVP@C-800作为阴极和阳极的对称钠离子电池（SIB）在40 mA g下具有高容量，电压平台约为1.79 V，能量密度为113 W h kg，表明NVP@C具有广阔的应用前景。
Zotero 插件