Back to Search
Start Over
Ampere-level oxygen evolution reaction driven by Co3O4nanoparticles supported on layered TiO2Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d4cy00557k
- Source :
- Catalysis Science & Technology; 2024, Vol. 14 Issue: 15 p4256-4263, 8p
- Publication Year :
- 2024
-
Abstract
- Cobalt oxide (Co3O4) is an attractive catalyst for the oxygen evolution reaction (OER). However, the OER performance of previously reported Co3O4nanoparticles is insufficient for ampere-level current. The reason is the lack of covalent bonds between Co3O4nanoparticles and the substrate, which leads to a high electron transfer energy barrier. Herein, Co3O4nanoparticles supported on a layered TiO2surface (Co3O4@layered-TiO2) by Co–O–Ti covalent bonds are carefully constructed through the MXene precursor method. As a result, Co3O4@layered-TiO2exhibits brilliant OER performance with ultra-low potential (1.52 V to reach 100 mA cm−2), ampere-level current density (1.66 V to reach 1000 mA cm−2) and long-term durability (110 h at 500 mA cm−2). Density functional theory studies have confirmed that the Co–O–Ti covalent bonds can adjust the d band center to optimize reaction energy barriers. This result illuminates a new strategy for constructing highly active materials on the metal oxide substrate for efficient electrocatalysis.
Details
- Language :
- English
- ISSN :
- 20444753 and 20444761
- Volume :
- 14
- Issue :
- 15
- Database :
- Supplemental Index
- Journal :
- Catalysis Science & Technology
- Publication Type :
- Periodical
- Accession number :
- ejs67018183
- Full Text :
- https://doi.org/10.1039/d4cy00557k