NiS2 nanoparticles anchored on Co-carbon nanotubes for supercapacitor and overall water splitting
Authors:
- Xingshuai Ji,
- Baogang Xu,
- Hongyu Zhang,
- Xiao Zhang,
- Ping Yang
Abstract
Exploiting low-cost and efficient electrode materials with catalytic activity toward water splitting and supercapacitor has a crucial role with sustainable energy development. Herein, a composite structure is created in which nickel sulfide nanoparticles are loaded on the surface of nitrogen-doped carbon nanotubes (Co-CNTs) encapsulated with cobalt nanoparticles as multifunctional catalysts. The growth in situ of NiS2 nanoparticles results in the Co-CNTs@NiS2 composite with ideal interface effect which remarkable improves the performance in supercapacitor, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activity. As a supercapacitor electrode, Co-CNTs@NiS2 activated carbon asymmetric supercapacitor performs a high specific capacitance of 370 F g−1 at 1 A g−1, revealing high retention of 68.8% after 3000 cycles. As an electrocatalyst, it is just needed to afford the overpotential of 235 and 309 mV in HER and OER to reach a current density of 10 mA cm−2 without iR correction. The Co-CNTs@NiS2 composite with optimized exposed surface just requires an overall cell voltage of 1.73 V to achieve 10 mA cm−2 in electrolyzer. The results supply great potential in the application of renewable energy. © 2023 Elsevier B.V.
- Record ID
- CUTd491c029660d4de8b5b143901c14e0ff
- Publication categories
- ;
- Author
- Journal series
- Journal of Alloys and Compounds, ISSN 0925-8388, e-ISSN 1873-4669
- Issue year
- 2023
- Vol
- 968
- Pages
- [1-10]
- Article number
- 172192
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 9-10; Bibliografia (liczba pozycji) - 63; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 968
- Keywords in English
- carbon nanotubes, interface, NiS2, electrochemical, supercapacitor, water splitting
- ASJC Classification
- ; ; ;
- DOI
- DOI:10.1016/j.jallcom.2023.172192 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/abs/pii/S0925838823034953 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTd491c029660d4de8b5b143901c14e0ff/
- URN
urn:pkr-prod:CUTd491c029660d4de8b5b143901c14e0ff
* 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.