Chen, J;
Akbari, H;
Zhang, H;
Brett, DJL;
Guo, J;
Gadipelli, S;
(2024)
Recent advances in design of hierarchically porous Fe₁-Nₓ-C based electrocatalysts for zinc-air batteries.
Diamond and Related Materials
, 150
, Article 111683. 10.1016/j.diamond.2024.111683.
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Gadipelli_Recent Advances in Design of Hierarchically Porous Fe1-Nx-C Based Electrocatalysts for Zinc-Air Batteries_AAM.pdf - Accepted Version Access restricted to UCL open access staff until 26 October 2025. Download (3MB) |
Abstract
Zinc-air batteries with high theoretical energy density, earth-abundant raw materials, eco-friendliness and safety are considered as promising next generation energy devices. Their commercial advancement can be boosted with the development of inexpensive and high-performing oxygen reduction reaction (ORR) catalysts. The precious platinum-group metal-based nanoparticles dispersed in conducting carbon black (e.g., Pt/C) are the typical ORR catalysts. The iron‑nitrogen‑carbon-based materials, specifically comprising atomic-level iron‑nitrogen coordination in hierarchical porous carbon support (usually denoted as Fe₁-Nₓ-C),have shown promising electrocatalytic activities by delivering important half-wave and on-set potentials and reduction current densities along with high durability. This has been attributed to the favorable adsorptive and reduction ability of Fe₁-Nₓ centers for molecular oxygen in alkaline electrolyte. Numerous studies have been focused on rational design of the hierarchically porous structures to enhance the accessibility of active Fe₁-Nₓsites and mass-transfer characteristics for efficient oxygen reduction and intermediate species. Therefore, in this review, several design strategies relevant to the template and self-template synthesis routes for hierarchically porous Fe₁-Nₓ-C catalysts are insightfully presented. A detailed discussion is offered on the ORR activity and performance of Fe₁-Nₓ-C catalysts in zinc-air batteries. Further opportunities and challenges for the rational design and application of Fe₁-Nₓ-C catalysts are also discussed.
| Type: | Article |
|---|---|
| Title: | Recent advances in design of hierarchically porous Fe₁-Nₓ-C based electrocatalysts for zinc-air batteries |
| DOI: | 10.1016/j.diamond.2024.111683 |
| Publisher version: | http://dx.doi.org/10.1016/j.diamond.2024.111683 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Synthesis strategies, Hierarchical porous structures, Fe₁-Nₓ-C, Oxygen reduction reaction, Single-atom electrocatalysts Zinc-air batteries |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10201034 |
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