Hierarchical S-doped porous carbon derived from by-product lignin for high-performance supercapacitors. Issue 20 (20th February 2017)

• Record Type: Journal Article
• Authors: Tian, Jingyang; Liu, Zhangming; Li, Zhenghui; Wang, Wenguang; Zhang, Haiyan
• Is Part Of: RSC advances. Volume 7:Issue 20(2017)
• Page Start: 12089
• Page End: 12097
• Publication Date: 2017-02-20
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra00767a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The S-PC-L-900 exhibits a high specific capacitance and excellent rate performance. Abstract : For the first time, hierarchical S-doped porous carbon was fabricated using sodium lignosulfonate as a carbon and sulfur precursor through a simple template technique. The obtained carbon has a high surface area (1054 m 2 g −1 ), high pore volume (1.73 cm 3 g −1 ), high sulfur content (2.9 wt%), and interconnected open macropores that can provide many storage sites, pseudocapacitance, and short transport paths for ions. The as-obtained S-PC-L-900 exhibits a high specific capacitance (328 F g −1 ) at 0.2 A g −1, excellent rate performance with 73% capacitance retention after a current density increasing from 0.5 to 20 A g −1 and cycling stability, with 97% capacitance retention after 10 000 cycles. Additionally, a symmetric supercapacitor based on S-PC-L-900 delivers a high energy density (6.9 W h kg −1 ) at 50 W kg −1 .