水滑石超级电容器电极材料层间距调控研究进展  

Research Progress on Layered Double Hydroxide Electrode Materials for Supercapacitors

作　　者：王晓亮[1] 高靖淞 宋晓琦 张一波 潘奎 王宏伟[1] 郭力歌 李盼盼 刘忆[2] 黄传辉[2] 杨绍斌[1] WANG Xiaoliang;GAO Jingsong;SONG Xiaoqi;ZHANG Yibo;PAN Kui;WANG Hongwei;GUO Lige;LI Panpan;LIU Yi;HUANG Chuanhui;YANG Shaobin(School of Materials Science and Engineering,Liaoning Technical University,Geology and Mineral Engineering Special Materials Professional Technology Innovation Center of Liaoning Province,Key Laboratory of Mineral High Value Conversion and Energy Storage Materials of Liaoning Province,Fuxin 123000,Liaoning,China;School of Mechanical and Electrical Engineering,Xuzhou Institute of Technology,Xuzhou 221111,Jiangsu,China)

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁省地矿工程特种材料专业技术创新中心,辽宁省矿物高值化与储能材料重点实验室,辽宁阜新123000 [2]徐州工程学院机电工程学院,江苏徐州221111

出　　处：《硅酸盐学报》2024年第6期2162-2174,共13页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(51974152)。

摘　　要：水滑石具有二维层状结构和高理论比电容,在超级电容器电极材料领域崭露头角。通过调控层间距,提高水滑石层间电化学活性位点利用率,降低离子传输阻力,成为水滑石等二维电极材料常用而有效的结构调控方法。近年来,水滑石层间距调控和电容性能研究报道迅速增加,但至今关于水滑石层间距调控提升电容性能的综述文章依然很少。因此,本文对水滑石的结构和储能机理进行了介绍,系统对比评述了离子交换法和一步合成方法调控层间距的优缺点,深入对比并总结了客体插层、金属阳离子配比调控、插层及水滑石载量调控等方法对水滑石层间距、成分、结构和电容性能的影响研究的进展情况,梳理出了调控层间距提升电容性能的常用方法和电容性能提升的内在机制,为推进水滑石电极材料的深入研究和应用发挥重要作用。Supercapacitors have attracted recent attention because of their high power density,fast charging and discharging capability,long cycle life,and good stability.However,the generally low energy density of supercapacitors restricts their applications.The electrode material is the most critical part in the supercapacitor and significantly affects the performance.In recent years,a rational design of electrode materials is proved to be an effective way to improve the capacitance performance of supercapacitors.Among many electrode materials,layered double hydroxide(i.e.,hydrotalcite and hydrotalcite-like)has the advantages of adjustable morphology and composition,high theoretical specific capacitance,low cost,easy synthesis and considerable energy density and power density,etc.,and emerges in the field of supercapacitor electrode materials.The unique two-dimensional structure of the layered double hydroxide(LDH)and its energy storage mode through electrolyte ions embedded and dislodged in the interlayer dictate that an interlayer spacing modulation is an effective method to improve its capacitance performance.Enhancing the utilization of electrochemically active sites between LDH layers and reducing the ion transport velocity resistance via regulating the layer spacing become a commonly used and effective structural modulation method for two-dimensional electrode materials such as LDH.This review summarized the research progress on the application of LDH interlayer spacing regulation in the field of supercapacitors,introduced the structure of LDH,the energy storage mechanism,and the advantages of LDH as an electrode material,and described the influencing factors and the advantages and disadvantages about the interlayer spacing regulation from the two different perspectives of the ion-exchange method and the one-step synthesis method,respectively.The target anion intercalation in the two methods concerns the anion charge density and anion concentration in the reaction system.The interlayer spacing values of different gu

关 键 词：水滑石 超级电容器电极材料 层间距调控 电容性能 

分 类 号：TM911[电气工程—电力电子与电力传动] O646[理学—物理化学]