中文版 | English
Title

Porous ball-in-ball N-doped carbon loading Co nanoparticles for high-performance asymmetric capacitor

Author
Corresponding AuthorZhang, Yanhong
Publication Years
2023-03
DOI
Source Title
ISSN
0925-9635
Volume133
Abstract
Porous carbon supported metal nanoparticles as supercapacitor electrode materials have attracted extensive attention. In this paper, cobalt nitrate/polystyrene microspheres/chitosan(Co(NO3)2/PS/CS) balls were fabricated by emulsion encapsulation and self-assembly process. After carbonization, Co nanoparticles (NPs) loaded on porous ball-in-ball N-doped carbon (Co/BNC) were prepared. Co/BNCs with high surface area profit formation of sufficient active sites and facilitate ion transport due to the interconnected and interpenetrating porous carbon structure. The electrochemical performances of Co/BNCs are affected by Co NPs content and the Co/BNC with the optimal Co NPs content (Co/BNC-2) possesses a commendable specific capacitance of 1120 F g−1 at 1 A g−1. Moreover, the capacitance retention of the asymmetric supercapacitors assembled by Co/BNC-2 and activated carbon is about 85.38 % after 5000 cycles. Remarkably, the device exhibits a maximum energy density of 60.9 Wh kg−1 at 764 W kg−1 and maintains 37.8 Wh kg−1 at 7878 W kg−1. Co/BNCs mentioned here have the potential to be candidates for high-performance supercapacitor electrode materials.
© 2023 Elsevier B.V.
Indexed By
Language
English
SUSTech Authorship
Others
Funding Project
The present study has been supported by NSFC ( 51973051 ) and Heilongjiang Natural Science Foundation Project ( LH2020E107 ).
Publisher
EI Accession Number
20231113706917
EI Keywords
Activated carbon ; Capacitance ; Carbonization ; Cobalt compounds ; Doping (additives) ; Electrodes ; Emulsification ; Metal nanoparticles ; Porous materials ; Self assembly
ESI Classification Code
Electricity: Basic Concepts and Phenomena:701.1 ; Electric Components:704.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Materials Science:951
ESI Research Field
MATERIALS SCIENCE
Data Source
EV Compendex
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/519793
DepartmentSchool of Environmental Science and Engineering
Affiliation
1.School of Chemical Engineering and Materials, Heilongjiang University, Harbin; 150080, China
2.School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen; 518055, China
Recommended Citation
GB/T 7714
Shi, Jiying,Zang, Linlin,Zhang, Long,et al. Porous ball-in-ball N-doped carbon loading Co nanoparticles for high-performance asymmetric capacitor[J]. DIAMOND AND RELATED MATERIALS,2023,133.
APA
Shi, Jiying.,Zang, Linlin.,Zhang, Long.,Wang, Jingzhen.,Xu, Qing.,...&Sun, Liguo.(2023).Porous ball-in-ball N-doped carbon loading Co nanoparticles for high-performance asymmetric capacitor.DIAMOND AND RELATED MATERIALS,133.
MLA
Shi, Jiying,et al."Porous ball-in-ball N-doped carbon loading Co nanoparticles for high-performance asymmetric capacitor".DIAMOND AND RELATED MATERIALS 133(2023).
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