Triggered factors and structure-activity relationship in the dynamic reconstruction processing of MOF for the alkaline oxygen evolution reaction

Abstract

Metal-organic frameworks (MOF) are promising electrocatalysts for the oxygen evolution reaction (OER). MOFs precatalysts undergo a structural reconstruction that results in the formation of transition metal hydroxyoxides (MOOH) during the OER process, which are widely regarded as the authentic catalytic species for OER. This review comprehensively summarizes the recent progress in the research field of MOF-based OER electrocatalysts in terms of structural reconstruction and analyzes in depth the intrinsic relationship between dynamic reconstruction mechanisms and structural activity. By studying two primary triggering factors for reconstruction: the manipulation of the electrochemical environment and the MOF structure, we aim to understand in detail the dynamic pathway of MOF reconstruction and its correlation with the OER catalytic activity in real time. In addition, this review also addresses the self-healing capabilities of reconstructed MOFs and the stability of their framework structures, providing important insights into the long-term performance of these catalysts. Finally, we propose a new direction for future research based on the current state of knowledge, aimed to better understanding how the microchemical environment affects catalytic activity during dynamic reconstruction, in order to facilitate the design and development of highly efficient MOF-based OER catalysts in the future and make it easier to navigate the future.