| Autor: |
Tao Li, Jiahui Chen, Zihao Song, Shujie Zhong, Wei Feng |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Molecules, Vol 29, Iss 22, p 5429 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1420-3049 |
| DOI: |
10.3390/molecules29225429 |
| Popis: |
In green hydrogen production via water electrolysis, catalysts with multiscale nanostructures synthesized by compositing micro-heterojunctions and nanoporous structures exhibit excellent electrocatalytic oxygen evolution reaction (OER) performance. Moreover, they are the most promising non-noble metal catalysts. Herein, FeNi-based aerogels with a three-dimensional nanoporous structure and amorphous matrix embedded with FeNi3 nanoclusters were synthesized via wet chemical reduction coprecipitation. The FeNi3 nanoclusters and the FeNi-based amorphous matrix formed a crystalline–amorphous heterojunction. These aerogels exhibited excellent OER performance and electrocatalytic stability in alkaline electrolytes. In 1 mol/L of KOH electrolyte, the as-synthesized aerogel exhibited an overpotential of 262 mV at a current density of 20 mA cm−2 with a Tafel slope of only 46 mV dec−1. It also demonstrated excellent stability during a 12 h chronopotentiometry test. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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