Metal-organic framework derived carbon materials for electrocatalytic oxygen reactions: Recent progress and future perspectives

• Published in: Carbon (New York) Vol. 156; pp. 77 - 92
• Main Authors: Du, Lei, Xing, Lixin, Zhang, Gaixia, Sun, Shuhui
• Format: Journal Article
• Language: English
• Published: New York Elsevier Ltd 01.01.2020; Elsevier BV
• Subjects: Carbon; Catalysts; Chemical reactions; Devices; Electrocatalysis; Electrolytic cells; Energy conversion; Energy management; Energy storage; Fuel cells; Iridium; Mass transfer; Metal air batteries; Metal-organic frameworks; Oxygen; Oxygen evolution; Oxygen reduction; Platinum; Porosity; Porous structure; Storage batteries; Oxygen evolution; Oxygen reduction; Porous structure; Catalysts; Metal-organic frameworks
• ISSN: 0008-6223; 1873-3891
• DOI: 10.1016/j.carbon.2019.09.029

The electrocatalytic oxygen reactions, i.e. oxygen reduction/evolution reactions (ORR/OER), play a key role in electrochemical energy conversion and storage devices, including fuel cells, electrolyzers, and metal-air batteries, and have attracted significant attention in the past decades. Platinum-group metal (PGM)-free materials have been intensively investigated as alternatives to replace the well-accepted but costly PGM-based catalysts such as Pt for ORR and Ir/Ru (oxides) for OER. Particularly, metal-organic framework (MOF)-derived carbon materials are emerging PGM-free catalysts for ORR/OER. So far, excellent works have been achieved to enhance the activity and durability of the MOF-derived PGM-free catalysts. It is the occasion to promote the PGM-free catalysts to the next level of application, i.e. in real devices. However, ORR/OER in real devices are potentially subject to the porosity related challenges, e.g. electron/mass transfer issue and active site isolation in organic Li-air batteries. To address these challenges, the rational design of porous electrocatalyst for devices is required. In this review, we summarize the most recent progress of MOF-derived carbon materials for ORR/OER with the focus on not only the active site engineering but also the design of porous structure. We also provide perspectives on the rational design of PGM-free catalysts using MOF as precursors. [Display omitted]