轻工学报2017，Vol.32Issue(4)：8-15,8.DOI:10.3969/j.issn.2096-1553.2017.4.002
微波辐射热解膨胀法制备三维多孔石墨烯及其电容性能研究
Study on preparation and capacitive properties of three dimensional porous graphene by microwave radiation pyrolysis expansion method
摘要
Abstract
Wormlike three dimensional (3D) porous graphene was prepared by microwave radiation pyrolysis expansion method.The morphology and pore structure of the as-prepared samples were characterized by SEM, TEM and N2 adsorption/desorption test.Simulated supercapacitors were assembled to perform electrochemical test by using the as-prepared 3D graphene.And the electrochemical properties were tested by cyclic voltammetry, galvanostatic charge discharge and electrochemical impedance test.The results showed wormlike 3D porous structure was characterized by translucent gossamer-like morphology and had obvious folds belonging to grephene nanosheet.The sample showed a specific surface area of 158.7 m2·g-1 and an average pore size of 11.2 nm.The as-prepared graphene showed excellent electrochemical performances, with a specific capacitance of 161 F·g-1 at 1.25 A·g-1 and 91 F·g-1 when the current increased to 25.00 A·g-1.At 1.25 A·g-1,the capacity retention rate was 90% after cycling charge and discharge 5000 times,which indicated the cycle stability was excellent.关键词
三维多孔石墨烯/微波辐射热解膨胀法/超级电容器Key words
three dimensional porous graphene/microwave radiation pyrolysis expansion method/super capacitor分类
化学化工引用本文复制引用
方华,王力臻,高可政,方薇,陈丹丹,范弘扬,裴梦莎..微波辐射热解膨胀法制备三维多孔石墨烯及其电容性能研究[J].轻工学报,2017,32(4):8-15,8.基金项目
国家自然科学基金-河南人才培养联合基金资助项目(U1504204) （U1504204）
