摘要
以六水合硝酸镍和对苯二甲酸为原材料,以水热反应法制备了一种镍基金属有机框架化合物(MOFs)。用X射线衍射技术、循环伏安法和恒流充放电法对合成产物的结构和性能进行了表征,考察了水热反应温度和反应物的摩尔比对合成产物的结构和电容性能的影响。测试结果表明,在反应温度为180℃,硝酸镍与对苯二甲酸的摩尔比为1∶1时,合成得到的MOFs材料具有高比电容。在1 A/g的电流密度下,放电时间长达477 s,比电容高达1 403 F/g。在10 A/g的电流密度下恒流充放电1 000次后,保持了初始电容值的45%。
A kind of metal-organic frameworks(Ni-PTA MOFs)was prepared with hydrothermal reaction method using nickel nitrate hexahydrate and p-phthalic acid(PTA)as raw materials.The structure and properties of the product synthesized were characterized by X-ray diffraction technique,cyclic voltammetry method and galvanostatic charge-discharge technique.The influences of reaction temperature and molar ratio of reactants on the structure and capacitive performance of the product were investigated.The test results showed that the MOFs obtained had high specific capacitance when the reaction temperature was 180℃and the molar ratio of nickel nitrate to p-phthalic acid was 1∶1,the discharge time was up to 477 s and the specific capacitance was as high as 1 403 F/g at a current density of 1 A/g.However,only 45%of the initial capacitance value was maintained after 1 000 cycles of galvanostatic charge and discharge at a current density of 10 A/g.
作者
胡传正
邹伦妃
徐俊晖
鲁珍
王亚珍
HU Chuanzheng;ZOU Lunfei;XU Junhui;LU Zhen;WANG Yazhen(Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education,School of Chemical and Environmental Engineering,Jianghan University,Wuhan 430056,Hubei,China)
出处
《江汉大学学报（自然科学版）》
2019年第2期115-123,共9页
Journal of Jianghan University：Natural Science Edition
基金
光电化学材料与器件教育部重点实验室(江汉大学)开放基金资助项目(JDGD-2016008)
工业烟尘污染控制湖北省重点实验室开放基金资助项目(HBIK2016-01)
关键词
金属有机框架化合物
电极材料
比电容
反应温度
摩尔比
metal-organic frameworks
electrode materials
specific capacitance
reaction temperature
molar ratio
