电化学2017，Vol.23Issue(5)：507-532,26.DOI:10.13208/j.electrochem.170348
超级电容器能量密度的提升策略
Strategies to Enhance Energy Density for Supercapacitors
摘要
Abstract
The biggest advantage of supercapacitor lies in not only the excellent pulse and fast charging-discharging perfor mance,but also the characteristics of long cycle life and wide operating temperature window with no pollution.However,the energy density of supercapacitor is low.In this paper,the working principle,the development status,defects and improvement method of supercapacitors are introduced.Based on the research workes of the supercapacitors with high energy density in our group,combined with the literature reports in recent years,the strategies to promote the energy density of supercarpacitors will be focused.The strategies for the enhancement of energy density include:1) to increase the specific capacitance of the electrode by reducing the existing materials to nano sizes or to develop new materials with high capacity;2) to increase the voltage window of the supercapacitor by developing ionic liquid electrolyte with high voltage window or to adopt asymmetric supercapacitors in which one electrode is pseudocapacitive,while the other utilizes double layer capacitance;3) to build lithium ion hybrid supercapacitors with both high energy density and high power density by "internal cross" the supercapacitor and lithium ion battery.Finally,the prospects in the future development of supercapacitors will be provided.关键词
超级电容器/不对称电容器/锂离子混合电容器/能量密度/功率密度Key words
supercapacitor/asymmetric supercapacitor/lithium-ion hybrid supercapacitor/energy density/power density分类
化学化工引用本文复制引用
郎俊伟,张旭,王儒涛,阎兴斌..超级电容器能量密度的提升策略[J].电化学,2017,23(5):507-532,26.基金项目
国家自然科学基金项目(No.21673263,No.21573265)、青岛市自主创新计划基金项目(No.16-5-1-42-jch)和西部博士基金项目资助 （No.21673263,No.21573265）
