Ultralow non-noble metal loaded MOF derived bi-functional electrocatalysts for the oxygen evolution and reduction reactions

Bagchi, D and Phukan, N and Sarkar, S and Das, R and Ray, B and Bellare, P and Ravishankar, N and Peter, SC (2021) Ultralow non-noble metal loaded MOF derived bi-functional electrocatalysts for the oxygen evolution and reduction reactions. In: Journal of Materials Chemistry A, 9 (14). pp. 9319-9326.

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Abstract

The rational design of efficient electrode materials for fuel cells, water oxidation, and metal-air batteries is now cutting-edge activity in renewable energy research. In this regard, tuning activity at the molecular level is one of the most challenging problems. Here, we have strategically employed two isophthalate-based ligands to tune the molecular structure and chemical bonding of three Co-based MOFs at the atomic level. MOFs were well characterized by single-crystal X-ray diffraction, IR spectroscopy, and X-ray absorption spectroscopy. The assembly of Co in these three novel MOFs at the atomic level dictates the catalytic activity towards the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). The catalytic activity of these MOFs has been boosted further upon annealing thereby forming highly efficient noble-metal-free Co-single atom catalysts where the amount of cobalt is extremely low. © The Royal Society of Chemistry 2021.

Item Type:	Journal Article
Publication:	Journal of Materials Chemistry A
Publisher:	Royal Society of Chemistry
Additional Information:	The copyright for this article belongs to Royal Society of Chemistry
Keywords:	Atoms; Chemical bonds; Crystal atomic structure; Electrocatalysts; Electrolytic reduction; Fuel cells; Metal cutting; Metal-air batteries; Oxygen; Oxygen evolution reaction; Oxygen reduction reaction; Precious metals; Single crystals; X ray absorption spectroscopy, Chemical bondings; Electrode material; Molecular levels; Oxygen evolution; Oxygen evolution reaction (oer); Reduction reaction; Renewable energies; Single crystal x-ray diffraction, Catalyst activity
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	14 Jul 2021 10:36
Last Modified:	14 Jul 2021 10:36
URI:	http://eprints.iisc.ac.in/id/eprint/68791

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