Spray pyrolysis feasibility of tungsten substitution for cobalt in nickel-rich cathode materials

作     者：Zihan Hou Lisheng Guo Xianlong Fu Hongxian Zheng Yuqing Dai Zhixing Wang Hui Duan Mingxia Dong Wenjie Peng Guochun Yan Jiexi Wang Zihan Hou;Lisheng Guo;Xianlong Fu;Hongxian Zheng;Yuqing Dai;Zhixing Wang;Hui Duan;Mingxia Dong;Wenjie Peng;Guochun Yan;Jiexi Wang

作者机构：Key Laboratory of Value-added Metallurgy of Hunan ProvinceEngineering Research Center of the Ministry of Education for Advanced Battery MaterialsSchool of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China BASF Shanshan Battery Materials Co.Ltd.Changsha 410205China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2024年第31卷第10期

页      面：2244-2252页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(No.52122407) the Science and Technology Innovation Program of Hunan Province,China(No.2022RC3048) the Key Research and Development Program of Yunnan Province,China(No.202103AA080019) 

主　　题：lithium-ion batteries Ni-rich low-cobalt W substitution spray pyrolysis 

摘      要：Cobalt(Co)serves as a stabilizer in the lattice structure of high-capacity nickel(Ni)-rich cathode ***,its high cost and toxicity still limit its *** general,it is possible to perform transition metal substitution to reduce the Co ***,the traditional coprecipitation method cannot satisfy the requirements of multielement coprecipitation and uniform distribution of elements due to the differences between element concentration and deposition *** this work,spray pyrolysis was used to prepare LiNi_(0.9)Co_(0.1-x)W_(x)O_(2)(LNCW).In this regard,the pyrolysis behavior of ammonium metatungstate was analyzed,together with the substitu-tion of W for *** the possibility of spray pyrolysis,the Ni-Co-W-containing oxide precursor presents a homogeneous distribution of metal elements,which is beneficial for the uniform substitution of W in the final *** was observed that with W substitution,the size of primary particles decreased from 338.06 to 71.76 nm,and cation disordering was as low as 3.34%.As a consequence,the pre-pared LNCW exhibited significantly improved electrochemical *** optimal conditions,the lithium-ion battery assembled with LiNi_(0.9)Co_(0.0925)W_(0.0075)O_(2)(LNCW-0.75mol%)had an improved capacity retention of 82.7%after 200 cycles,which provides insight in-to the development of Ni-rich low-Co *** work presents that W can compensate for the loss caused by Co deficiency to a cer-tain extent.