用于构建高性能超级电容器的多层片状CoMoO_(4)/Ni_(3)S_(2)纳米复合材料  

Multilayer Sheet-Like CoMoO_(4)/Ni_(3)S_(2)Nanocomposite Materials for Constructing High-Performance Supercapacitors

作　　者：陆惠群 梁龙生 罗杭 郭艳萍 陆森 林锴松 郑荣升 程再军 Lu Huiqun;Liang Longsheng;Luo Hang;Guo Yanping;Lu Sen;Lin Kaisong;Zheng Rongsheng;Cheng Zaijun(School of Optoelectronics and Communication Engineering,Xiamen 361024,China;Fujian Provincial Key Laboratory of Advanced Semiconductor Micro-Nano Technology and Devices,Xiamen 361024,China)

机构地区：[1]厦门理工学院光电与通信工程学院,福建厦门361024 [2]厦门理工学院先进半导体微纳技术及器件福建省高校重点实验室,福建厦门361024

出　　处：《微纳电子技术》2025年第4期114-124,共11页Micronanoelectronic Technology

基　　金：福建省自然科学基金面上项目(2021J011215);厦门理工学院研究生科技创新项目(YKJCX2023073,YKJCX2023122)。

摘　　要：采用两步水热法在泡沫镍衬底上沉积了CoMoO_(4)/Ni_(3)S_(2)片状纳米复合材料用作赝电容电极。研究了不同水热反应时间对CoMoO_(4)/Ni_(3)S_(2)电极结构和电化学性能的影响,结果显示,在120℃的水热反应温度下,反应时间为3 h时,CoMoO_(4)/Ni_(3)S_(2)电极在0.5 A·g^(-1)的电流密度下表现出859.4 C·g^(-1)的比容量。在4 A·g^(-1)的电流密度下,经过3000次充放电循环后,容量保持率为59.43%,库仑效率接近100%。优异的电化学性能源自于纳米片结构的丰富活性位点,显著促进离子和电子的传输,从而加快氧化还原反应。此外,以CMONS-3纳米材料为正极、活性炭为负极组装的器件在1064.65 W·kg^(-1)功率密度下,能量密度达到44.39 W·h·kg^(-1)。该研究结果表明了CoMoO_(4)/Ni_(3)S_(2)纳米复合电极材料作为高性能超级电容器电极材料的巨大潜力。CoMoO_(4)/Ni_(3)S_(2)sheet-like nanocomposite materials were deposited on nickel foam substrates via a two-step hydrothermal method for use as pseudocapacitive electrodes.The influences of different hydrothermal reaction time on the structure and electrochemical performance of CoMoO_(4)/Ni_(3)S_(2)electrode were investigated.The results indicate that under a hydrothermal reaction temperature of 120℃and a reaction time of 3 h,the CoMoO_(4)/Ni_(3)S_(2)electrode shows a specific capacity of 859.4 C·g^(-1)at a current density of 0.5 A·g^(-1).After 3000 charge-discharge cycles at a current density of 4 A·g^(-1),the capacitance retention is 59.43%,the coulombic efficiency close to 100%.The superior electrochemical performance is attributed to the abundant active sites of the nanosheet structure,which significantly enhances ion and electron transport,thereby accelerating redox reactions.Moreover,the device assembled with CMONS-3 nanomaterials as the cathode and activated carbon as the anode achieves an energy density of 44.39 W·h·kg^(-1)at a power density of 1064.65 W·kg^(-1).The study results show the great potential of CoMoO_(4)/Ni_(3)S_(2)nanocomposite electrode materials as high-performance supercapacitor electrode materials.

关 键 词：水热法 钼酸钴 硫化镍 核壳异质结构 超级电容器 

分 类 号：TB383[一般工业技术—材料科学与工程]