Facile synthesis of functionalized porous carbon with three-dimensional interconnected pore structure for high volumetric performance supercapacitors. (November 2015)

• Record Type: Journal Article
• Authors: Long, Conglai; Jiang, Lili; Wu, Xiaoliang; Jiang, Yuting; Yang, Deren; Wang, Caikun; Wei, Tong; Fan, Zhuangjun
• Is Part Of: Carbon. Volume 93(2015)
• Page Start: 412
• Page End: 420
• Publication Date: 2015-11
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2015.05.040
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Functionalized porous carbon with three-dimensional (3D) interconnected pore structure has been successfully synthesized through direct heat-treatment of KOH-soaked soybeans. Benefiting from heteroatoms (N, O) doping, interconnected porous carbon framework with high surface area as well as high packing density (up to 1.1 g cm −3 ), the as-obtained porous carbon material exhibits high volumetric capacitance of 468 F cm −3, good rate capability and excellent cycling stability (91% of capacitance retention after 10, 000 cycles) in 6 M KOH electolyte. More importantly, the as-assembled symmetric supercapacitor delivers high volumetric energy density of 28.6 Wh L −1 in 1 M Na2 SO4 aqueous solution.