High rate integrated quasi-solid state supercapacitors based on nitrogen-enriched active carbon fiber/reduced graphene oxide nanocomposite. (April 2018)

• Record Type: Journal Article
• Authors: Qiu, Xiaoming; Xiao, Zechuan; Wang, Luning; Fan, Li-Zhen
• Is Part Of: Carbon. Volume 130(2018)
• Page Start: 196
• Page End: 205
• Publication Date: 2018-04
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2018.01.033
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: A nitrogen-enriched active carbon fiber/reduced graphene oxide nanocomposite was synthesized by electrospinning, calcination, self-assembled reduction, and post treatment nitrogen doping. The nitrogen content and C/O ratio of nitrogen-enriched active carbon fiber/reduced graphene oxide nanocomposite was up to 12 at.% and 28 after post process N-doping, respectively. High specific capacitance of 208 F g −1 at 20 A g −1 and excellent rate performance was shown in 6 mol L −1 KOH. Meanwhile, a specific capacitance of 212 F g −1 was obtained at 3 A g −1 and along with 99% capacitance retention after 10 000 cycles for quasi solid state supercapacitors. The excellent electrochemical performance is attributed to unique line-plane structure between the one dimensional active carbon fiber and the two dimensional reduced graphene oxide, and incorporation of nitrogen functional groups. Graphical abstract: This paper presents a nitrogen-enriched active carbon fiber/reduced graphene oxide nanocomposite synthesized by self-assembled reduction and post treatment nitrogen doping, and showing high nitrogen content (12 at. %), high C/O ratio (28), and excellent electrochemical performance. Image 1