Ni2P nanosheets modified N-doped hollow carbon spheres towards enhanced supercapacitor performance
Authors:
- Yingjie Liu,
- Xiao Zhang,
- Katarzyna Matras-Postolek,
- Ping Yang
Abstract
Carbon materials have been attracted attention because of high supercapacitor activity. In this work, N-doped mesoporous hollow carbon spheres coated with Ni2P nanosheets are prepared by hydrothermal and calcination processes using a SiO2 template. N element doping changes the structure of hollow carbon spheres. Ni2P nanosheets are grown uniformly on the surface of the N-doped carbon spheres (N-CS). Due to the unique atomic arrangement of N-CS, the hollow mesoporous structure, and coupling with the unique composition of Ni2P nanosheets, N-C@Ni2P composites exhibit excellent electrochemical performance as supercapacitor electrodes with high specific capacitance and cycle stability under high current density. When the current density is 10 A g-1, the specific capacitance is 1320.4 F g-1. The capacitance retention rate after 1500 cycles is 76%. In the case of a current density of 20 A g-1, the specific capacitance is still up to 1062 F g-1. This method provides a fine strategy for designing high-performance supercapacitors based on carbon materials.
- Record ID
- CUT695172f60e77430d835a836fc89649b4
- Publication categories
- ;
- Author
- Journal series
- Journal of Alloys and Compounds, ISSN 0925-8388, e-ISSN 1873-4669
- Issue year
- 2021
- Vol
- 854
- Pages
- [1-10]
- Article number
- 157111
- Other elements of collation
- fot.; schem.; wykr.; Bibliografia (na s.) - 9-10; Bibliografia (liczba pozycji) - 46; Oznaczenie streszczenia - Abstr.; Data udostępnienia on-line - 2020-09-11; Numeracja w czasopiśmie - Vol. 854
- Keywords in English
- carbon, Ni2P, supercapacitorc hollow sphere
- DOI
- DOI:10.1016/j.jallcom.2020.157111 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/abs/pii/S0925838820334757 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 100
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT695172f60e77430d835a836fc89649b4/
- URN
urn:pkr-prod:CUT695172f60e77430d835a836fc89649b4
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.