Ni-BTC/RGO复合材料的制备及其电化学性能  

Synthesis and electrochemical properties of Ni-BTC/RGO composites

作　　者：马锐[1] 张宇雨 王菲菲[1] 刘琪瑶 李嘉琪 魏金枝[1] MA Rui;ZHANG Yuyu;WANG Feifei;LIU Qiyao;LI Jiaqi;WEI Jinzhi(School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学材料科学与化学工程学院,哈尔滨150080

出　　处：《材料工程》2022年第6期124-130,共7页Journal of Materials Engineering

基　　金：黑龙江省大学生创新实验项目(201810214080);黑龙江省自然科学基金联合引导项目(LH2019B026)。

摘　　要：为了制备价格低廉且比电容高、循环稳定性好的电容器材料,采用电化学法合成石墨烯基含镍金属有机骨架材料Ni-BTC/RGO,研究含镍金属有机骨架材料Ni-BTC的合成条件以及Ni-BTC/RGO的电化学性能。对不同条件下的系列Ni-BTC材料进行XRD分析,并对Ni-BTC,RGO和Ni-BTC/RGO进行SEM测试、循环伏安测试和恒电流充放电测试。结果表明:工作电压为6 V、反应时间为3 h、反应体系温度为35℃是Ni-BTC的最佳合成条件;Ni-BTC和RGO成功复合且RGO对Ni-BTC的结构并未产生影响;复合材料主要表现赝电容电化学行为。在0.5 A·g^(-1)电流密度下,Ni-BTC/RGO的比电容为468.72 F·g^(-1),功率密度为0.249 W·g^(-1);在1.0 A·g^(-1)电流密度下循环500周次以后,比电容保留率为50.08%。In order to prepare capacitor materials with low cost,higher specific capacitance and better cycle stability,the graphene-based nickel-containing metal organic framework material(Ni-BTC/RGO)was prepared by electrochemical method to study the synthesis conditions of Ni-BTC and the electrochemical properties of Ni-BTC/RGO.A series of Ni-BTC materials under different conditions were analyzed by XRD.SEM,cyclic voltammetry and constant current charge-discharge tests were carried out for Ni-BTC,RGO and Ni-BTC/RGO.The results show that working voltage of 6 V,reaction time of 3 h,and reaction system temperature of 35℃are optimum synthesis conditions of Ni-BTC;Ni-BTC and RGO are successfully combined and RGO has no effect on the structure of Ni-BTC;the composites mainly exhibit pseudocapacitive electrochemical behavior.At the current density of 0.5 A·g^(-1),the specific capacitance of Ni-BTC/RGO is 468.72 F·g^(-1),and the power density is 0.249 W·g^(-1);after 500 cycles at the current density of 1.0 A·g^(-1),the specific capacitance retention rate is 50.08%.

关 键 词：电化学法 镍基金属有机骨架 Ni-BTC/RGO 电化学性能 

分 类 号：TB333[一般工业技术—材料科学与工程]