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Highly Porous Metal–Organic Framework Entrapped by Cobalt Telluride–Manganese Telluride as an Efficient Bifunctional Electrocatalyst
- Source :
- ACS Applied Materials & Interfaces; February 2024, Vol. 16 Issue: 8 p10238-10250, 13p
- Publication Year :
- 2024
-
Abstract
- The electrochemical conversion of oxygen holds great promise in the development of sustainable energy for various applications, such as water electrolysis, regenerative fuel cells, and rechargeable metal-air batteries. Oxygen electrocatalysts are needed that are both highly efficient and affordable, since they can serve as alternatives to costly precious-metal-based catalysts. This aspect is particularly significant for their practical implementation on a large scale in the future. Herein, highly porous polyhedron-entrapped metal–organic framework (MOF)-assisted CoTe2/MnTe2heterostructure one-dimensional nanorods were initially synthesized using a simple hydrothermal strategy and then transformed into ZIF-67 followed by tellurization which was used as a bifunctional electrocatalyst for both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). The designed MOF CoTe2/MnTe2nanorod electrocatalyst exhibited superior activity for both OER (η = 220 mV@ 10 mA cm–2) and ORR (E1/2= 0.81 V vs RHE) and outstanding stability. The exceptional achievement could be primarily credited to the porous structure, interconnected designs, and deliberately created deficiencies that enhanced the electrocatalytic activity for the OER/ORR. This improvement was predominantly due to the enhanced electrochemical surface area and charge transfer inherent in the materials. Therefore, this simple and cost-effective method can be used to produce highly active bifunctional oxygen electrocatalysts.
Details
- Language :
- English
- ISSN :
- 19448244
- Volume :
- 16
- Issue :
- 8
- Database :
- Supplemental Index
- Journal :
- ACS Applied Materials & Interfaces
- Publication Type :
- Periodical
- Accession number :
- ejs65525988
- Full Text :
- https://doi.org/10.1021/acsami.3c18654