NiCo2O4@PANI复合材料的制备及其电化学性能研究
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摘要：
通过水热处理及电化学沉积,在集流体泡沫镍上原位生长出NiCo2O4@PANI复合材料.通过扫描电镜观察到泡沫镍上均匀分布着表面粗糙的纳米棒阵列,这种结构有利于电极材料与电解液的充分接触与反应;PANI(聚苯胺)的包覆增加了NiCo2O4的导电性,降低了载流子传输的活化能,因而表现出优异的电化学性能.在1 mA·cm-2的电流密度下,复合材料的比电容为2307.15 F·g-1.当电流密度提升到20 mA·cm-2后,比电容的保留率为78.13%.在10 mA·cm-2电流密度下,循环2000次后,比电容保留率为85.46%.测试结果证明该复合材料作为电极材料,在超级电容器的应用中有着巨大的潜力.
A facile hydrothermal method and subsequent electrodeposition process were carried out to form NiCo2O4@PANI composite materials on the surface of foam nickel directly.The morphology and microstructure of materials were observed by scan electron microscopy.It is found that a nanorod array with a rough surface uniformly grown on the surface of nickel foam,improving the contact and reaction between the electrode materials and the electrolyte.The coating of PANI(polyaniline)also enhanced the conductivity of NiCo2O4,decreasing the active energy of carrier transport.The as-prepared material shows excellent electrochemical performance as supercapacitor electrode material.At a current density of 1 mA·cm-2,the specific capacitance of the composite can reach 2307.15 F·g-1.When the current density is increased to 20 mA·cm-2,the retention rate of specific capacitance is 78.13%.At the current density of 10 mA·cm-2,after 2000 cycles,the retention rate of specific capacitance is 85.46%.The test results imply the composite material,as an electrode material,has great potential in the application of supercapacitors.
作者：
徐甲强 高天歌 卫雪菲 袁安保
Xu Jiaqiang;Gao Tiange;Wei Xuefei;Yuan Anbao(Department of Chemistry,College of Sciences,Novel Energy and Sensing Technology Laboratory,Shanghai University,Shanghai 200444,China)
机构地区：
上海大学理学院化学系
出处《河南师范大学学报(自然科学版)》 CAS 2024年第1期28-33,共6页
Journal of Henan Normal University(Natural Science Edition)
基金：
国家重点研发计划项目(2017YFB0102200).
关键词：
NiCo2O4复合材料 超级电容器 电沉积
NiCo2O4 composite materials supercapacitors electrodeposition
分类号：
TP212.2 [自动化与计算机技术—检测技术与自动化装置]
