Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

Abstract

The research progress of MOF-based bifunctional oxygen electrocatalysts for zinc–air batteries is reviewed and the main challenges and prospects for developing advanced MOF-based bifunctional electrocatalysts are proposed.

Recent progress in metal–organic framework/graphene-derived materials for energy storage and conversion: design, preparation, and application

“…Meanwhile, the ORR is the reverse reaction of the OER, and is a critical process in metal-air batteries and fuel cells. 235,236 The two reactions dominate the performance of these electrochemical energy conversion devices to a large extent.…”

“…Meanwhile, the ORR is the reverse reaction of the OER, and is a critical process in metal–air batteries and fuel cells. 235,236 The two reactions dominate the performance of these electrochemical energy conversion devices to a large extent. Unfortunately, the inherent reaction kinetics of the OER and ORR are sluggish due to the multiple proton-coupled electron transfer procedures.…”

Single-atom catalysts for high-energy rechargeable batteries

“…11 During the charge and discharge of Li-O 2 and Zn-air batteries, the reaction kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) can be accelerated. 13 Several reviews on SACs have been published in recent years, especially in the area of catalysis for conversion reactions. [14][15][16][17] In this perspective, we systematically summarize the recent progress on SACs, mainly focusing on synthetic approaches to optimized properties of SACs for new generation high-energy rechargeable batteries (Fig.…”

“… 11 During the charge and discharge of Li–O 2 and Zn–air batteries, the reaction kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) can be accelerated. 13 …”

Carbon support tuned electrocatalytic activity of a single-site metal–organic framework toward the oxygen reduction reaction

“…[35][36][37] So far, approaches reported to tune and improve the electrocatalytic activity of single-site MOFs include: a) tailoring three-dimensional (3D) MOFs into two-dimensional (2D) MOF nanosheets; [38][39][40] b) constructing continuous charge transport pathways through structural and chemical tuning of molecular building blocks in MOFs; [41][42][43] c) optimizing the unsaturated coordination environment via the introduction of defects or extra ligands. [44][45][46] Through these approaches, the activity of single-site MOFs for catalyzing reactions such as oxygen reduction reaction (ORR), [47][48][49][50] hydrogen evolution reaction (HER), [51][52][53] oxygen evolution reaction (OER) 54,55 and CO 2 reduction reaction (CO 2 RR) [56][57][58][59] has been improved. For example, Dincă et al designed and synthesized a conductive 2D MOF with extended π-conjugated skeleton using 2,3,6,7,10,11-hexaiminotriphenylene as a multitopic ligand, exhibiting excellent electrocatalytic activity toward ORR.…”