VO_(2)·xH_(2)O纳米棒用于水系锌离子电池正极材料  

VO_(2)·xH_(2)O nanorods used as cathode materials for aqueous zinc-ion batteries

作　　者：蒋玲玲[1] 陆月朋[1] Jiang Lingling;Lu Yuepeng(School of Intelligent Manufacturing,Huainan United University,Huainan 232038,China)

机构地区：[1]淮南联合大学智能制造学院,安徽淮南232038

出　　处：《电镀与精饰》2024年第6期48-54,共7页Plating & Finishing

基　　金：安徽省教育厅科学研究重点项目(2023AH051157)。

摘　　要：具有优异电化性能、环境友好和低成本的水性锌离子电池(AZIBs)已经成为有前途的储能器件。然而,缓慢的传输动力学和不稳定的主体结构是高性能AZIBs先进正极材料开发的主要障碍。在此,利用四甲酰基苯硼酸与五氧化二钒之间的反应作用,通过简单的一步水热反应制备出含有氧缺陷的水合二化钒(VO_(2)·xH_(2)O)纳米棒。采用XRD、Raman、FTIR、SEM、XPS表征了VO_(2)·xH_(2)O的形貌和结构。VO_(2)·xH_(2)O纳米棒用作AZIBs的正极材料展现了优异的储锌性能,主要归因于材料的高效传输动力学和丰富的反应位点。在0.5/5.0 A·g^(-1)电流密度下可提供314/199 mAh·g^(-1)的高放电比容量。本论文提供了一种简单合成高性能AZIBs正极材料的方法,也为其他新型正极材料的设计提供了科学指导。Aqueous zinc-ion batteries(AZIBs)with excellent electrochemical properties,environmental friendliness,and low cost have emerged as promising energy storage devices.However,slow transport kinetics and unstable host structure are significant obstacles to develop advanced cathode materials for high-performance AZIBs.The reaction between tetraformylphenylboronic acid and vanadium pentoxide was used to prepare hydrated vanadium oxide(VO_(2)·xH_(2)O)nanorods containing oxygen defects through a simple one-step hydrothermal reaction.The morphology and structure of VO_(2)·xH_(2)O were characterized by XRD,Raman,FTIR,SEM and XPS.VO_(2)·xH_(2)O nanorods as cathode materials for AZIBs exhibited excellent zinc storage performance,mainly due to the efficient transport kinetics and abundant reaction sites of the material.It can provide a high discharge specific capacity of 314/199 mAh·g^(-1) at a current density of 0.5/5.0 A·g^(-1).Therefore,a simple strategy to synthesize highperformance AZIBs cathode materials was provided,and it would provide scientific guidance for the design of other advanced cathodes.

关 键 词：氧缺陷工程 正极材料 水系锌离子电池 钒基材料 

分 类 号：TQ317[化学工程—高聚物工业]