Multi-Heteroatom-Doped Carbon Materials for Solid-State Hybrid Supercapacitors with a Superhigh Cycling Performance

Yang, L. and Yang, Y. and Wang, S. and Guan, X. and Wang, G. (2020) Multi-Heteroatom-Doped Carbon Materials for Solid-State Hybrid Supercapacitors with a Superhigh Cycling Performance. Energy and Fuels, 34 (4). pp. 5032-5043. ISSN 0887-0624

Full text not available from this repository.

Abstract

For the purpose of assembling high-performance solid-state hybrid supercapacitors (HSCs) with superior cycling stability and energy density, biomass-derived multi-heteroatom-doped carbon materials were prepared in this work and utilized as negative electrodes for the supercapacitors. The applied biomass in this study included orange peel and egg white; besides, we also prepared Ag-doped egg white as a precursor through a denaturation reaction to synthesize a Ag-nanoparticle-decorated carbon material; the consequently obtained carbon materials were referred to as OC, EC, and Ag–EC, respectively. The as-synthesized heteroatom-doped carbon materials displayed excellent electrochemical performance. The specific capacitance retentions were 101.7, 105.4, and 107.4% for OC, EC, and Ag–EC, respectively, after 50 000 cycles. In addition, a core–shell structured C/N–CoO@CoO/NiO nanomaterial was also synthesized and used as the positive electrode, which exhibited a high cycling stability of 111.6% after cycling for 50 000 times. The three corresponding solid-state hybrid supercapacitors (HSCs) possessed excellent energy densities of 33.1, 30.1, and 35.6 Wh kg–1 at about 850.0 W kg–1, respectively. After cycling for 50 000 times, their specific capacitance retentions were 145.9, 139.2, and 140.0%, respectively.

Item Type:
Journal Article
Journal or Publication Title:
Energy and Fuels
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2103
Subjects:
ID Code:
144165
Deposited By:
Deposited On:
22 Jul 2020 13:40
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Sep 2020 06:18