1. Carbon-based iron-cobalt phosphate FeCoP/C as an effective ORR/OER/HER trifunctional electrocatalyst.
- Author
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Zhao, Ruge, Ni, Baoxia, Wu, Luming, Sun, Pingchuan, and Chen, Tiehong
- Subjects
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OXYGEN evolution reactions , *ALKALINE batteries , *ELECTROCATALYSTS , *OXYGEN reduction , *HYDROGEN evolution reactions , *ENERGY conversion , *PHOSPHORIC acid , *PHOSPHATES - Abstract
Efficient catalysts for hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR) are of paramount importance for electrochemical energy applications. Herein, a high-efficient carbon-based trifunctional electrocatalyst FeCoP/C is synthesized through a simple one-step supramolecular-assisted method, in which a supramolecular gel structure is formed by phosphoric acid and melamine to allow the efficient and homogeneous incorporation of highly active species. Experimentally, the as-obtained catalysts exhibit practical trifunctional activities in the ORR, OER, and HER. In alkaline electrolytes, requiring overpotentials of 95 and 282 mV to deliver a current density of 10 mA cm−2 for HER and OER, respectively, and presents the significantly increased alkalic ORR activity, with the half-wave potential of 0.849 V. Furthermore, the FeCoP/C also showed good integrated capabilities for Zn-air batteries. This supramolecular-assisted strategy could bring new inspiration to boost the electrocatalytic performance of transition metal-based electrocatalysts for energy conversion applications. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2022
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