Ultralow non-noble metal loaded MOF derived bi-functional electrocatalysts for the oxygen evolution and reduction reactions. Issue 14 (30th March 2021)

• Record Type: Journal Article
• Authors: Bagchi, Debabrata; Phukan, Nithi; Sarkar, Shreya; Das, Risov; Ray, Bitan; Bellare, Pavithra; Ravishankar, Narayanan; Peter, Sebastian C.
• Is Part Of: Journal of materials chemistry. Volume 9:Issue 14(2021)
• Page Start: 9319
• Page End: 9326
• Publication Date: 2021-03-30
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta12439g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Ultra low cobalt single atom bi-functional electrocatalysts derived from MOFs exhibit oxygen evolution and reduction reaction activity close to that of state-of-the-art Pt/C and IrO2 . 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.