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网孔状NiO电极制备及其电容特性 被引量：2

Preparation and Capacitance Characteristics of Oxidation Nickel Oxide Electrode with Mesh-Like Structure
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摘要 以硫酸镍和尿素作原料,六偏磷酸钠为表面活性剂,由水热法制备前驱体,经400℃煅烧即得网孔状结构的NiO.XRD、SEM和恒流充放电分析测试样品的相结构、微观形貌和电容特性,考察不同水热温度对合成产物电化学性能的影响.结果表明:当镍与尿素摩尔比为1∶4时,由140℃水热合成前驱体,经400℃煅烧得到的氧化镍性能较好.在20 mA.cm-2下NiO电极的放电比电容为939 F/g. The mesh-like structure of NiO electrode was obtained by first preparing the precursors via hydrothermal process using nickel sulfate and carbamide as reactants,sodium hexametaphosphate as a surfactant,and followed by calcination of the precursors at 400 ℃.The structure,morphology and capacitance characteristics of NiO electrode were characterized by XRD,SEM and constant current charge-discharge testing techniques.The effects of hydrothermal temperatures on the electrochemical properties of NiO electrode were investigated.The results showed that the better property of nickel oxide was obtained when the mole ratio of nickel to urea was 1∶ 4 and the hydrothermal temperature was 140 ℃.The specific discharge capacitance of the NiO electrode was up to 939 F·g^-1 at 20 mA·cm^-2.
作者 徐惠 彭振军 郭东红 李俊玲
机构地区 兰州理工大学石油化工学院
出处 《电化学》 CAS CSCD 北大核心 2011年第4期448-452,共5页 Journal of Electrochemistry
基金 国家自然科学基金(51062011)资助
关键词 NIO 网孔状结构 电容特性 NiO mesh-like structure capacitance characteristics
分类号 TM53 [电气工程—电器]
作者简介 通讯作者，Tel：（86-931）2975872，E—mail：xuhui@lut．cn
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参考文献12

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共引文献5

同被引文献20

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二级引证文献1

电化学
2011年 第4期

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