焦耳热法制备石墨烯及其在超级电容器中的应用  

Application of graphene in supercapacitors prepared by Joule heating

作　　者：孟士超 董澍 Meng Shichao;Dong Shu(Naval Armament Division,Wuhan 430064,China;Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China)

机构地区：[1]海军装备部,武汉430064 [2]武汉船用电力推进装置研究所,武汉430064

出　　处：《船电技术》2024年第8期1-4,共4页Marine Electric & Electronic Engineering

摘　　要：为研发低成本、高性能的超级电容器用电极材料,本文从可工业化生产的氧化石墨烯出发,利用焦耳热法快速、高效、绿色的还原氧化石墨烯,探究还原后的氧化石墨烯在超级电容器中的电化学性能。在三电极体系中,在0.5 Ag-1的电流密度下展现了350 Fg-1的比容量,2 Ag-1的电流密度下的10000次循环中,比容量达到203 Fg-1,循环保持率达到了95%。组装为对称电极超级电容器器件进行测试,在1000 W kg-1的功率密度下达到了19.3 Whkg-1的能量密度。In order to develop low-cost,high-performance electrode materials for supercapacitors,this paper proposes an industrially producible graphene oxide,and uses Joule heating method to quickly,efficiently and enviomentally-friendly reduce grapheme oxide,and explores the electrochemical performance of the reduced graphene oxide in supercapacitors.The reduced graphene oxide demonstrates a specific capacitance of 350 F/g at a current density of 0.5 A/g in a three-electrode system.Furthermore,it maintains a specific capacitance of 203 F/g after 10,000 cycles at a current density of 2 A/g,with a cycle retention rate of 95%.Assembled as a symmetric electrode supercapacitor device for testing,it achieves an energy density of 19.3 Wh/kg at a power density of 1000 W/kg.

关 键 词：超级电容器 氧化石墨烯 焦耳热 

分 类 号：TM912[电气工程—电力电子与电力传动]