碳布负载氧化锰的制备及其锌离子电池性能研究  

Preparation of Nano-structured Manganese Oxide Loaded on Carbon Cloth for Aqueous Zinc-ion Battery

作　　者：陈淑君 姚恒 张集领 张朝琰 孟轩 岳红伟 Chen Shujun;Yao Heng;Zhang Jiling;Zhang Chaoyan;Meng Xuan;Yue Hongwei(College of Chemical and Materials Engineering,Xuchang University,Xuchang 461000,China)

机构地区：[1]许昌学院化工与材料学院,河南许昌461000

出　　处：《山东化工》2024年第8期1-5,10,共6页Shandong Chemical Industry

基　　金：国家自然科学基金(11804289);河南省科技厅项目(232102230017);河南省教育厅项目(22B430028)。

摘　　要：可再充电水性锌离子电池具有环境友好、高安全性、高离子传导性和低成本等优点,已成为新能源领域最有前途的储能电池之一。锰基材料是锌离子电池最佳的正极材料。然而,其固有的导电性差和结构坍塌阻碍了它们的实际应用。为改善Mn_(3)O_(4)电极材料的电化学性能,文章以碳布为基底、高锰酸钾为原料,利用碳和高锰酸钾之间的氧化还原反应,在碳纤维表面生长了四氧化三锰的纳米线,形成核壳结构的Mn_(3)O_(4)@CC/复合材料,并直接作为水性锌离子电池的自支撑无粘结剂的正极材料。同时,探讨了反应温度对复合材料的影响,制备出Mn_(3)O_(4)@CC/130℃、Mn_(3)O_(4)@CC/160℃和Mn_(3)O_(4)@CC/180℃三种复合材料。采用X射线衍射仪、扫描电子显微镜、激光共焦拉曼光谱仪、热重分析仪、电化学工作站等仪器对Mn_(3)O_(4)@CC复合材料的组成、形貌和电化学性能等进行了表征。电化学测试表明,相比于其他两个电极,Mn_(3)O_(4)@CC/130℃复合材料表现出更优异的电化学性能,在100 mA·g^(-1)下循环100次后的容量为277.2 mAh·g^(-1),在1000 mA·g^(-1)的大电流密度下测试,经150次循环容量仍保持在124.0 mAh·g^(-1)。The shortage of traditional fossil fuels and their impact on the environment have been widely concerned for human society,and there is an urgent need to develop and utilize renewable energy.However,due to weather conditions and geographical environment,renewable energy(such as solar energy,wind energy,tidal energy)could not be efficiently and conveniently used.Therefore,developing efficient,environmentally friendly,and cost-effective new batteries is a hot research topic for global researchers.Rechargeable aqueous zinc ion batteries(AZIBs)have become one of the most promising energy storage batteries in the field of new energy due to the environmental friendliness,high safety,high ion conductivity,and low cost,and.Manganese based materials are the best positive electrode materials for the AZIBs.However,their inherent poor conductivity and structural collapse hinder their practical application.To improve the electrochemical performance of Mn_(3)O_(4)electrode for the AZIBs.Heren,the Mn_(3)O_(4)@CC cathode is elaborately designed and fabricated using the carbon cloth(CC)as a substrate and potassium permanganate as the raw material.By utilizing the redox reaction between carbon and potassium permanganate,Mn_(3)O_(4)nanowires are grown on the surface of carbon fibers,forming the core-shell structured Mn_(3)O_(4)@CC composite,which could be directly used as self-supporting and binding-free cathode for AZIBs.And the influence of reaction temperature for Mn_(3)O_(4)@CC composite is explored,three types of composite materials such as Mn_(3)O_(4)@CC/130℃、Mn_(3)O_(4)@CC/160℃and Mn_(3)O_(4)@CC/180℃is obtained.By using X-ray diffractometer,scanning electron microscope,laser confocal Raman spectrometer,thermogravimetric analyzer,electrochemical workstation,etc.the composition,morphology,and electrochemical properties of the Mn_(3)O_(4)@CC composite were characterized.Compared to the other two electrodes,Mn_(3)O_(4)@CC/130℃electrode exhibited the superior electrochemical performance with a capacity of 277.2 mAh·g^(-

关 键 词：水系锌离子电池 正极材料 碳布 四氧化三锰 水热法 

分 类 号：TQ152[化学工程—电化学工业] TB34[一般工业技术—材料科学与工程]