Back to Search
Start Over
Optimizing Heterointerface of Co2P–Co x O y Nanoparticles within a Porous Carbon Network for Deciphering Superior Water Splitting
- Source :
- Small Structures, Vol 4, Iss 6, Pp n/a-n/a (2023)
- Publication Year :
- 2023
- Publisher :
- Wiley-VCH, 2023.
-
Abstract
- It is of great significance to design a bifunctional electrocatalyst for promoting hydrogen (HER) and oxygen (OER) evolution reactions simultaneously. Herein, inspired by the appropriate H atom binding energy on cobalt phosphides and excellent oxygen evolution kinetics on cobalt oxides, the regulative synthesis of a Co2P–Co x O y (Co x O y = CoO or Co3O4) heterogeneous nanoparticle‐anchored porous carbon network electrocatalyst via one‐pot heat treatment is reported. The as‐synthesized Co2P–Co3O4/C exhibits superior electrochemical activity with low overpotentials of 86 mV for HER and 246 mV for OER at 10 mA cm−2 in an alkaline electrolyte. Moreover, compared to the commercial Pt/C || RuO2/C system, the Co2P–Co3O4/C || Co2P–Co3O4/C system presents outstanding activity toward overall water splitting (1.55 V@10 mA cm−2), which is well maintained over long‐term (120 h) electrocatalysis. Density functional theory calculations show that the rich interfaces between Co2P and Co3O4 offer a synergistic effect, which enables Co2P–Co3O4/C as an excellent electrocatalyst toward both HER and OER.
Details
- Language :
- English
- ISSN :
- 26884062
- Volume :
- 4
- Issue :
- 6
- Database :
- Directory of Open Access Journals
- Journal :
- Small Structures
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.48fdc08a7c44f19330a9770625ea19
- Document Type :
- article
- Full Text :
- https://doi.org/10.1002/sstr.202200235