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

• 作者: Yongxu Du Wei Liu Yongpeng Cui Hongguang Fan Yuan Zhang Tianqi Wang Huanlei Wang Yongcheng Jin Shuang Liu Wenting Feng Ming Chen
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（9）
• 页码范围: 95-103
• 页数: 9页
• 语种: 英文

摘要

A new microzone-combustion synthesis is proposed for preparing S,N-doped hierarchically porous car-bons(CAC-CN)with a novel mixed microstructure of sp2 short-range order area and sp3 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(HG-WIS)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-W1S electrolyte endows the assembled devices with superior high energy density and excellent capacitance retention,also a good temperature robust-ness,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.