ZnCo_2O_4颗粒的溶剂热合成及其电容性能  

Solvothermal Synthesis and Supercapacitive Properties of ZnCo_2O_4 Particles

作　　者：周谢[1] 黄鹿[1] 魏智强[1] 李琴[1] 张国光[1] 邵志松[1] 周伟[1] 曹径倩 ZHOU Xie;HUANG Lu;WEI Zhiqiang;LI Qin;ZHANG Guoguang;SHAO Zhisong;ZHOU Wei;CAO Jingqian(School of materials science and engineering,Nanehang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《材料科学与工程学报》2018年第5期815-818,共4页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51062015);江西省教育厅科技资助项目(GJJ14535)

摘　　要：通过溶剂热合成ZnCo_2O_4材料并对其进行退火处理,通过X射线衍射技术(XRD)、扫描电子显微镜(SEM)、循环伏安法(CV)和恒电流充放电测试对其性能进行表征。制备的ZnCo_2O_4由粒径为30～50nm的颗粒组成,ZnCo_2O_4纳米材料表现出较高的比电容性能,在电流密度为1A/g和10A/g下分别可以达到1044.9F/g和799.5F/g,在5A/g的电流密度下3000个循环之后还能保持70.54%的比电容。Zinc cobaltite （ZnCo2O4） has been prepared by solvothermal method followed by an annealing processs. The specimens were then characterized and tested by methods including cyclic voltammetry （CV）, and galvanostatic charge-discharge experiment. The as-prepared ZnCo2O4 was found composed of nanoparticles with the diameters about 30-50nm. The ZnCo2O4 nanomaterial exhibits high specific capacitance of 1044. 9F/g and 799. 5F/g at discharge current densities of 1A/g and 10A/g, respectively. The specific capacitance retention is 70.54% after 3000 cycles suggesting its good cycling stability.

关 键 词：ZnCo2O4 超级电容器 赝电容 纳米颗粒 

分 类 号：O64[理学—物理化学]