Polyoxometalate-Incorporated Host-Guest Framework Derived Layered Double Hydroxide Composites for High-Performance Hybrid Supercapacitor
作者机构：Key Laboratory of Chemical Additives for China National Light IndustryCollege of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi'anShaanxi 710021China KAUST Catalysis CenterKing Abdullah University of Science and Technology23955-6900ThuwalKingdom of Saudi Arabia
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2023年第41卷第1期
页 面：75-82页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：financially supported by the National Natural Science Foundation of China(22001156) the Youth Talent Fund of University Association for Science and Technology in Shaanxi,China(20210602) the Science Foundation of Science and Technology Department of Shaanxi Province(2021JQ-533)
主 题：Polyoxometalate-based metal organic framework Layered double hydroxide Supercapacitor Multi-electron redox High stability
摘 要：Metal organic frameworks have been employed as high-performance layered double hydroxide(LDH)composite supercapacitor electrode materials but have shown unsatisfactory redox ability and ***,a host-guest CuMo-based polyoxomet-alate-based metal organic framework(POMOF)with copious electrochemically active sites and strong electrochemical redox activi-ties has been effectively coupled with POM-incorporated CoNi-LDH to develop a nanocomposite(NENU-5@CoNi-LDH)by a simple solvothermal *** designed electrode shows a high specific capacity of 333.61 mAh·g^(-1) at 1 A·g^(-1).In addition,the novel hy-brid symmetric supercapacitor NENU-5@CoNi-LDH/active carbon(AC)demonstrated a high energy density of 80.8 Wh·kg^(-1) at a power density of 750.7 W·kg^(-1).Interestingly,the nanocomposite of NENU-5@CoNi-LDH exhibits an outstanding capacitance reten-tion of 79%after 5000 charge-discharge cycles at 10 A·g^(-1).This work provides a new strategy and will be the backbone for future energy storage research.
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