摘要
超级电容器是目前正在大力研究发展的一种高效环保型电容器。为探索Co(OH)_2作为替代传统贵金属材料的电容器电极材料的可行性与优点,本文以氯化钴为原料,通过水浴法制备了Co(OH)_2粉末,利用SEM和XRD对Co(OH)_2粉末的形貌和结构进行了表征,用红外光谱分析了其组分,通过循环伏安、恒流充放电方法测试了Co(OH)_2电极材料的电化学性能。结果表明:实验制得的Co(OH)_2为不规则的片状结构,材料结构较为疏松,内部空隙较多,利于电化学反应的进行;测得材料单电极比电容在60 m A/cm2时高达162.5 F/g,恒流充放电比电容保持率为84.1%,其循环稳定性能好,是一种优异的超级电容器电极材料。
ISupercapacitor is a kind of high efficiency and environment friendly capacitor that is being researched and developed. As a substitute for precious metal material of capacitor electrode materials, in order to explore the feasibility and advantages of the Co（OH）2, Co（OH）2 powder is prepared by using the cobalt chloride as raw material, through the water bath. The morphology and structure of Co（OH）2 is tested by XRD and SEM, and the component of Co（OH）2 is measured by FT-IR. The electrochemical capacitor performance of Co（OH）2 electrode materials is tested by cyclic voltammetry and constant current charge discharge methods.Results show that Co（OH）2 owns irregular lamellar structure, which is loose. The plenty of space is in favor of electrochemical reaction. Co（OH）2 electrode exhibits a high specfic capacitance of 162.5 F g-1 at a current density of 60 m A/cm2. The specific capacitance retention rate is 84.1 % and the cycle stability performance is good. Therefore, Co（OH）2 is a nice electrode material of supercapacitor.
出处
《能源环境保护》
2017年第6期19-22,共4页
Energy Environmental Protection
