Microzone-explosion synthesis of porous carbon electrodes for advanced aqueous solid-state supercapacitors with a high-voltage gel electrolyte

查看全文 作　　者：Yongxu [1]Du;Wei [1]Liu;Yongpeng [1]Cui;Hongguang [1]Fan;Yuan [1]Zhang;Tianqi [1]Wang;Huanlei [1]Wang;Yongcheng [1]Jin;Shuang [1]Liu;Wenting [1]Feng;Ming [1]Chen 机构地区：[1]School of Materials Science and Engineering,Ocean University of China,Qingdao 266100,Shandong,China 出　　处：《Journal of Energy Chemistry》索引2021年第30卷第9期,共9页 基　　金：supported by the Shandong Provincial Natural Science Foundation, China (ZR2018MEM014);the Shandong Provincial Key R&D plan and the Public Welfare Special Program, China (2017GGX20124)。 摘　　要：A new microzone-combustion synthesis is proposed for preparing S, N-doped hierarchically porous carbons(CAC-CN) with a novel mixed microstructure of sp~2 short-range order area and sp~3 defective area,achieving a coexistence of high conductivity and high capacitance as well as good access for electrolyte.By engineering ‘‘water in salts' into a polymer matrix, a high-voltage(2.5 V) aqueous gel electrolyte(HGWIS) is prepared and used to construct an aqueous solid-state SCs by in situ polymerization between the electrodes. The good match of CAC-CN electrode and HG-WIS electrolyte endows the assembled devices with superior high energy density and excellent capacitance retention, also a good temperature robustness, as well a high flexibility in 0-180° bending cycles. This study indicates that the collaborative design strategy of electrode materials and electrolyte would be great potential in exploring advanced aqueous solid-state SCs. 关 键 词：Porous carbon S N-DOPING Microzone-explosion Gel electrolyte SUPERCAPACITOR