文献类型：期刊文献

中文题名：α-Ni（OH）2/石墨烯纳米复合材料的制备及其电容性能研究

英文题名：Preparation and capacitance properties ofα-Ni（OH）2/graphene nanocomposites

作者：张来苹[1];张明亮[1];张文帅[1];李丽[1]

第一作者：张来苹

机构：[1]新乡学院化学化工学院

第一机构：新乡学院化学化工学院

年份：2019

卷号：38

期号：12

起止页码：28-33

中文期刊名：电子元件与材料

外文期刊名：Electronic Components and Materials

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：河南省重点科技攻关项目资助(122102210406)

语种：中文

中文关键词：超级电容器;α-Ni(OH)2;石墨烯;纳米复合材料;晶化隔离法

外文关键词：supercapacitor;α-Ni(OH)2;graphene;nanocomposite;crystallization isolation

摘要：近年来,石墨烯复合材料作为理想基底用于电极材料的生长,在电化学的许多领域都得到了广泛的应用。以石墨烯和六水合硝酸镍为原料,用NaBH4作为还原剂,在90℃低温条件下制备合成了具有纳米尺寸的α-Ni(OH)2/石墨烯复合材料。研究了石墨烯与α-Ni(OH)2的质量比不同时复合材料的电化学性能。结果表明:当质量比为5∶5时,复合材料显示了最佳的电化学性能:在0~0.47 V的电位窗口,0.2 A/g的电流密度下,比容量高达1280 F/g;2 A/g的电流密度下循环充放电测试2000次后,比容量仍然保持88%。因此,该复合材料作为一种理想的复合电极材料,可被应用到能量转化/储存系统中。
In recent years,graphene composites have been used as an ideal substrate for the growth of electrode materials,which have been widely used in many fields of electrochemistry.Hereα-Ni(OH)2/graphene nanocomposites were synthesized at 90℃using graphene and nickel nitrate hexahydrate as precursor materials and NaBH4 as reducing agent.The electrochemical properties of the composites were studied for different mass ratio of graphene toα-Ni(OH)2.The results show that the composites have the best electrochemical performance at the mass ratio of 5∶5.The specific capacitance can be up to 1280 F/g at the potential window from 0 V to 0.47 V and current of 0.2 A/g.After 2000 cyclic charge-discharge test at current density of 2 A/g,the specific capacitance remains at 88%.Therefore,thisα-Ni(OH)2/graphene nanocomposites,as an ideal composite electrode material,should be able to be used for the energy conversion/storage system.