Engineered nitrogen doping on VO_(2)(B)enables fast and reversible zinc-ion storage capability for aqueous zinc-ion batteries

作     者：Xin Gu Juntao Wang Xiaobin Zhao Xin Jin Yuzhe Jiang Pengcheng Dai Nana Wang Zhongchao Bai Mengdi Zhang Mingbo Wu Xin Gu;Juntao Wang;Xiaobin Zhao;Xin Jin;Yuzhe Jiang;Pengcheng Dai;Nana Wang;Zhongchao Bai;Mengdi Zhang;Mingbo Wu

作者机构：College of New EnergyState Key Laboratory of Heavy Oil ProcessingChina University of Petroleum(East China)Qingdao 266580ShandongChina Institute for Superconducting and Electronic MaterialsAustralian Institute for Innovative MaterialsUniversity of Wollongong Innovation CampusNorth WollongongNew South Wales 2500Australia Institute of Energy Materials Science(IEMS)University of Shanghai for Science and TechnologyShanghai 200093China 

出 版 物：《Journal of Energy Chemistry》 (能源化学(英文版))

年 卷 期：2023年第85卷第10期

页      面：30-38,I0003页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported from the Natural Science Foundation of Shandong Province(ZR2022MB088) the National Natural Science Foundation of China(22138013) the Taishan Scholar Project(ts201712020) the Innovation and Entrepreneurship Training Program for college students of the China University of Petroleum(East China)(202207011) 

主　　题：Vanadium dioxide Nitrogen doping Cathode materials Aqueous zinc-ion batteries 

摘      要：Vanadium-based compounds with high theoretical capacities and relatively stable crystal structures are potential cathodes for aqueous zinc-ion batteries(AZIBs).Nevertheless,their low electronic conductivity and sluggish zinc-ion diffusion kinetics in the crystal lattice are greatly obstructing their practical ***,a general and simple nitrogen doping strategy is proposed to construct nitrogen-doped VO_(2)(B)nanobelts(denoted as VO_(2)-N)by the ammonia heat *** with pure VO_(2)(B),VO_(2)-N shows an expanded lattice,reduced grain size,and disordered structure,which facilitates ion transport,provides additional ion storage sites,and improves structural durability,thus presenting much-enhanced zinc-ion storage *** functional theory calculations demonstrate that nitrogen doping in VO_(2)(B)improves its electronic properties and reduces the zinc-ion diffusion *** optimal VO_(2)-N400 electrode exhibits a high specific capacity of 373.7 mA h g^(-1)after 100 cycles at 0.1 A g^(-1)and stable cycling performance after 2000 cycles at 5 A g^(-1).The zinc-ion storage mechanism of VO_(2)-N is identified as a typical intercalation/de-intercalation process.