三维多孔炭制备及在电容器中应用  

Preparation of three dimensional porous carbon and its application in supercapacitors

作　　者：王九洲[1] 孟晓 张洋 张彬 WANG Jiuzhou;MENG Xiao;ZHANG Yang;ZHANG Bin(Tianjin Institute of Power Sources,Tianjin 300384,China;Amperex Technology Limited,Ningde Fujian 352106,China;Xi’an Institute of Modern Control Technology,Xi’an Shannxi 710000,China)

机构地区：[1]中国电子科技集团公司第十八研究所,天津300384 [2]宁德新能源科技有限公司,福建宁德352106 [3]西安现代控制技术研究所,陕西西安710000

出　　处：《电源技术》2022年第10期1112-1116,共5页Chinese Journal of Power Sources

摘　　要：以磺化沥青为前驱体,聚二烯丙基二甲基氯化铵(PDDA)为软模板剂,经KOH活化后制备出具有大-中-微孔相结合的三维层次孔多孔炭材料,其比表面积可达2796 m^(2)/g,中孔比表面积占比60%,孔体积达到1.78 cm^(3)/g。将其应用到双电层电容器(EDLCs),在有机电解液体系中0.05 A/g的电流密度下比电容可达167 F/g,10 A/g时电容保持率达到84%;在离子液体电解液中0.05 A/g的电流密度下比电容可达174 F/g,10 A/g时电容保持率为78%。在10000次循环测试后,在有机系和离子液体电解液中的电容保持率分别可达94%和82%。A three dimensional hierarchical porous carbon material with macro-,meso,and micro-pores was prepared by using sulfonated pitch as precursor,PDDA as the soft template and KOH activation.The specific surface area was 2796 m^(2)·g^(-1),the meso specific surface area accounted for 60%,and the pore volume was up to 1.78 cm^(3)·g^(-1).When applied to electric double layer capacitors(EDLCs),the specific capacitance in organic electrolyte can reach 167 F·g^(-1) at the current density of 0.05 A·g^(-1),and the capacitance retention can reach 84%at 10 A·g^(-1);in ionic liquid electrolyte,the specific capacitance can reach 174 F·g^(-1) at the current density of 0.05 A·g^(-1),and the capacitance retention is 78%at 10 A·g^(-1).In addition,after 10,000 cycles,the capacitance retention in organic and ionic liquid electrolyte were 94%and 82%,respectively.

关 键 词：磺化沥青 层次孔多孔炭 双电层电容器 

分 类 号：TM53[电气工程—电器]