Abstract
Developing efficient oxygen reduction reaction (ORR) catalyst is essential for the practical application of Zn-air batteries (ZABs). In this contribution, we develop a novel zeolitic imidazolate framework (ZIF)-mediated strategy to anchor Co species on N-doped carbon nanorods for efficient ORR. Featuring ultrahigh N-doping (10.29 at.%), monodisperse Co nanocrystal decoration, and well-dispersed Co-Nx functionalization, the obtained Co-decorated N-doped carbon nanorods (Co@NCNR) exhibit a decent ORR performance comparable to commercial Pt/C in alkaline media. Aqueous ZABs have been assembled using Co@NCNR as the cathode catalyst. The assembled ZABs manifest high initial open-circuit voltage as well as high energy density. In addition, the Co@NCNR also demonstrates ideal ORR performance in quasi-solid-state ZABs.
| Original language | English (US) |
|---|---|
| Article number | e12389 |
| Journal | Energy and Environmental Materials |
| Volume | 6 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 2023 |
Funding
This work was supported by the National Natural Science Foundation of China (52072283), the National Key Research and Development Program of China (2020YFA0715000), Shenzhen Fundamental Research Program (JCYJ20190809114409397). The S/TEM work was performed at the Nanostructure Research Center (NRC), which is supported by the Fundamental Research Funds for the Central Universities (WUT: 2021III016GX).
Keywords
- Co nanocrystals
- Co-N
- N-doped carbon
- oxygen reduction reaction
- Zn-air battery
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- General Materials Science
- Water Science and Technology
- Environmental Science (miscellaneous)
- Waste Management and Disposal
- Energy (miscellaneous)
