NiCo/CNT复合材料的制备及电化学性能研究

doi:DOI:10.3969/j.issn.2095-2198.2022.05.005

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超级电容器因其充电时间短、倍率性能优越、内阻较低等特点，近年来受到了人们的广泛关注.笔者采用一步水热合成法制备NiCox/CNTy系列纳米复合材料，并对NiCox/CNTy的组成、形貌和电化学性能进行测试.结构表征表明：镍钴氢氧化物一部分附着在CNT的表面形成包裹，另一部分形成由纳米片组成的芍药花状团簇嵌入到碳纳米管的缝隙中.电化学性能测试结果表明：NiCo2/CNT30复合材料电极具有较高的比电容和优异的倍率性能，0005 A/cm2电流密度下面积比电容为310 F/cm2，0020 A/cm2电流密度下面积比电容为291 F/cm2，电容保持率高达941%.NiCo/CNT系列复合材料电极优异的表面结构有利于电解液离子与夹层中电活性成分的快速交换，从而加快电化学反应速率.恒电流充放电循环测试中经过7000次循环（电流密度为0010 A/cm2）后，初始电容保持在985%，说明该系列电极材料具有良好的循环稳定性.

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超级电容器碳纳米管电化学测试金属氢氧化物

Abstract:

Recently,supercapacitors have attracted extensive attention due to their characteristics of short charging time,superior rate performance and low internal resistance.In this study,NiCox/CNTy series nanocomposites were prepared by one-step hydrothermal synthesis,and the composition,morphology and electrochemical properties of NiCox/CNTy nanocomposites were tested.The structural characterization showed that one part of nickel cobalt hydroxide attached to the surface of CNT to form a package,and the other part formed peony flower clusters composed of nanosheets and embedded into the gap of carbon nanotubes.The electrochemical performance tests show that NiCo2/CNT30 electrode has high specific capacitance and excellent rate performance.The area specific capacitance is 310 F/cm2 at 0005 A/cm2 and the area specific capacitance at 0020 A/cm2 current density is 291 F/cm2.The capacitance retention rate is up to 941%.NiCo/CNT series composite electrodes have excellent surface structure,which is conducive to the rapid exchange of electrolyte ions with the electroactive components in the interlayer,thus speeding up the electrochemical reaction rate.After 7000 cycles(current density is 0010 A/cm2) in the constant current charge-discharge cycle test,the initial capacitance remains at 985%,indicating that this series of electrode materials have good cycle stability.

Key words: supercapacitors')" href="#">

supercapacitors carbon nanotubes electrochemical testing metal hydroxide

出版日期: 2022-10-30 发布日期: 2024-03-22 整期出版日期: 2022-10-30

ZTFLH:

TB34

基金资助:

辽宁省科技厅自然科学基金计划指导项目（2019-ZD-0080）；辽宁省教育厅自然科学青年项目（LQ2020013）

作者简介: 赵亚楠（1985—），女，辽宁铁岭人，讲师，博士，主要从事表面腐蚀与防护、储能及光催化材料的研究.

引用本文:

赵亚楠宋玉丽王文俊王亲亲张尧刘一张雅倩李文泽.

NiCo/CNT复合材料的制备及电化学性能研究 [J]. 沈阳化工大学学报, 2022, 36(5): 412-419.
ZHAO Ya-nan SONG Yu-li WANG Wen-jun WANG Qin-qin ZHANG Yao LIU Yi ZHANG Ya-qian LI Wen-ze.

Preparation and Electrochemical Properties of NiCo/CNT Composites . Journal of Shenyang University of Chemical Technology, 2022, 36(5): 412-419.

链接本文:

https://xuebao.syuct.edu.cn/CN/DOI:10.3969/j.issn.2095-2198.2022.05.005 或 https://xuebao.syuct.edu.cn/CN/Y2022/V36/I5/412

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[1]	朱晓宇1, 梁雨苏2, 李文泽1. 碳纳米管增强铜铬基复合材料的制备及其性能研究 [J]. 沈阳化工大学学报, 2023, 37(3): 193-199.

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