储能科学与技术2025，Vol.14Issue(12)：4431-4440,10.DOI:10.19799/j.cnki.2095-4239.2025.0689
铝阳离子调控镍钴双氢化合物的制备及其在混合型电容器的应用
Preparation of nickel cobalt layered double hydroxides regulated by aluminum cation and its application in hybrid supercapacitors
摘要
Abstract
Nickel-cobalt layered double hydroxides(LDHs)have recently emerged as promising high-performance electrode materials owing to their large specific capacity,tunable structure,and diverse functionalities.In this study,nickel-coated polyester fibers were used as the substrate,and nickel-cobalt LDHs(NC LDH/NPFs)were synthesized through a low-temperature chemical bath process.To further enhance their electrochemical performance,a series of aluminum-doped composite electrodes(ANC LDH/NPFs)were prepared by introducing various amounts of Al3+ions.The aluminum ions effectively regulated the crystal structure and morphology of the NC LDHs,resulting in optimized electrochemical behavior and structural stability,thereby broadening the application potential of NC LDHs in supercapacitors.The structure and morphology of the prepared materials were characterized by X-ray diffraction,scanning electron microscopy,and X-ray photoelectron spectroscopy.Their electrochemical performance was evaluated in a three-electrode system at room temperature.The ANC LDH/NPFs-2 electrode exhibited superior electrochemical properties,delivering a specific capacitance of 798 F/g at a current density of 1 A/g.Furthermore,the assembled hybrid supercapacitor demonstrated excellent energy storage capability,achieving an energy density of 38.2 Wh/kg and a power density of 453 W/kg at a current density of 0.5 A/g.These results indicate that precise regulation using aluminum ions enables the fabrication of high-performance nickel-cobalt LDH-based hybrid capacitors,providing a viable strategy for the design and development of advanced electrode materials.关键词
层状双氢氧化物/电极材料/低温化学浴/掺杂/混合电容器Key words
layered bimetallic hydroxide/electrode materials/low temperature chemical bath/doping/hybrid supercapacitors分类
通用工业技术引用本文复制引用
HAN Ruoyao,HONG Jianhan,LIU Yongkun..铝阳离子调控镍钴双氢化合物的制备及其在混合型电容器的应用[J].储能科学与技术,2025,14(12):4431-4440,10.基金项目
浙江省教育厅一般科研项目(Y202454378) （Y202454378）
浙江省新苗人才计划(2021R432021). （2021R432021）
