Abstract
Electrocatalytic CO(2) reduction reaction (CO(2)RR) has emerged as a focal point in sustainable energy research, offering the potential for closed carbon cycle. Among numerous catalysts designed for CO(2)RR, two-dimensional (2D) Cu-based catalysts stand out for their remarkable performance in efficiently converting CO(2) into high-value-added C(1) and C(2+) chemicals. Herein, we discuss the recent progress and challenges in the realm of CO(2)RR utilizing 2D Cu-based catalysts. The first section introduces various synthetic strategies, emphasizing the features and advantages of different techniques and proposing solutions to existing challenges. The second part outlines the reaction mechanism underlying the production of C(1) and C(2+) products on Cu-based catalysts, then summarizes applications of different types 2D Cu-based catalysts in CO(2)RR. Additionally, we evaluate the limitations of 2D Cu-based catalysts and propose improved strategies. Through this exploration of research advances and challenges, we hope to illuminate the path toward developing excellent CO(2) electrocatalysts.