MnS@NiCo-LDH复合电极材料超级电容性能研究  

Research on supercapacitor properties of MnS@NiCo-LDH composite electrode materials

作　　者：于占军 刘二斌 许康磊 王献立 崔节虎[1] YU Zhanjun;LIU Erbin;XU Kanglei;WANG Xianli;CUI Jiehu(School of Materials Science and Engineering,Zhengzhou University of Aeronautics,Zhengzhou 450046,China)

机构地区：[1]郑州航空工业管理学院材料学院,河南郑州450046

出　　处：《实验技术与管理》2024年第11期43-51,共9页Experimental Technology and Management

基　　金：河南省科技攻关项目(242102240087);郑州航空工业管理学院研究生教育创新计划基金(2024CX123);河南省高等学校重点科研项目(25B140011)。

摘　　要：Mn S作为一种具有宽带隙的半导体材料,在超级电容器领域受到广泛关注。合理设计异质结构复合电极材料是解决超级电容器储能性能差的可行方法。采用水热结合电沉积技术制备了Mn S@Ni Co-LDH薄膜复合电极,并对其结构及电化学性能进行测试分析。MnS@NiCo-LDH薄膜复合电极具有片状多孔隙分层次结构,在1 A/g电流密度下具有高达2 418 F/g的比电容、高的倍率性能(80.89%)及良好的循环稳定性(1 700次循环后电容保持率为79.6%)。结果表明,所设计制备的MnS@NiCo-LDH薄膜复合电极具有满足先进储能器件要求的巨大潜力,为设计其他复合电极材料提供了新思路。[Objective]Efficient energy storage is a significant challenge in the pursuit of clean energy.Supercapacitors,a new type of energy storage device known for their high energy and power density,offer a promising solution.They excel in charge storage,featuring fast charging and discharging speeds,high efficiency,long cycle life,and wide operating temperature limit and are maintenance-free,safe,reliable,and environmentally friendly.In 2017,the Ministry of Science and Technology officially included“large-capacity energy storage systems and applications based on supercapacitors”in the national key research and development plans,known as the“973”plan.Furthermore,it outlines the strategic direction for supercapacitors in the advanced energy technology sector under the national“863”plan.The preparation and application of supercapacitor electrode materials is also part of the national medium-and long-term science and technology development program.This underscores the vital role supercapacitors play in boosting the national economy and advancing scientific and technological progress,highlighting the urgent need for research in this area.The primary focus is on creating high-quality electrode materials that are cheap,environmentally friendly,simple,and easy to prepare.[Methods]This experiment involved preparing a thin-film composite electrode(MnS@NiCo-LDH)using a hydrothermal process combined with electrodeposition for supercapacitor applications.Initially,an MnS film was hydrothermally prepared hydrothermally on a nickel foam substrate,followed by a NiCo-LDH film on the MnS film substrate,ensuring a strong bond between the films.Its composition,structure,and morphology were characterized,and electrochemical properties were assessed using cyclic voltammetry,constant current charge–discharge,AC impedance,and cyclic performance.The MnS@NiCo-LDH films demonstrated ideal electrochemical behavior owing to their porous layered structure,which provides a higher number of active sites,facilitates electrolyte penetrati

关 键 词：超级电容性能 硫化锰 NiCo-LDH 复合电极 

分 类 号：TM53[电气工程—电器]