Applications of Ferric Oxide in Water Splitting by Electrolysis: A Comprehensive Review
In water electrolysis, the use of an efficient catalyst derived from earth-abundant materials which is cost-effective and stable is essential for the economic sustainability of hydrogen production. A wide range of catalytic materials have been reported upon so far, among which Fe<sub>2</sub...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-10-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/29/21/4990 |
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| Summary: | In water electrolysis, the use of an efficient catalyst derived from earth-abundant materials which is cost-effective and stable is essential for the economic sustainability of hydrogen production. A wide range of catalytic materials have been reported upon so far, among which Fe<sub>2</sub>O<sub>3</sub> stands out as one of the most credible candidates in terms of cost and abundance. However, Fe<sub>2</sub>O<sub>3</sub> faces several limitations due to its poor charge transfer properties and catalytic ability; thus, significant modifications are essential for its effective utilization. Considering the future of water electrolysis, this review provides a detailed summary of Fe<sub>2</sub>O<sub>3</sub> materials employed in electrolytic applications with a focus on critically assessing the key electrode modifications that are essential for the materials’ utilization as efficient electrocatalysts. With this in mind, Fe<sub>2</sub>O<sub>3</sub> was implemented in a heterojunction/composite, doped, carbon supported, crystal facet tuned system, as well as in metal organic framework (MOF) systems. Furthermore, Fe<sub>2</sub>O<sub>3</sub> was utilized in alkaline, seawater, anion exchange membrane, and solid oxide electrolysis systems. Recently, magnetic field-assisted water electrolysis has also been explored. This comprehensive review highlights the fact that the applicability of Fe<sub>2</sub>O<sub>3</sub> in electrolysis is limited, and hence, intense and strategically focused research is vital for converting Fe<sub>2</sub>O<sub>3</sub> into a commercially viable, cost-effective, and efficient catalyst material. |
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| ISSN: | 1420-3049 |