Unbiased photoelectrochemical carbon dioxide reduction shaping the future of solar fuels

As atmospheric carbon dioxide (CO2) levels surge due to human activities, addressing this global crisis is paramount. This article delves into the realm of photoelectrochemical (PEC) CO2 reduction, a promising solution that combines solar energy conversion and electrochemical processes to transform CO2 into clean energy fuels. The primary focus of this article lies in the cutting-edge unbiased PEC tandem configurations, specifically reviewing recent breakthroughs in coupling PEC CO2 reduction with the oxygen evolution reaction through water oxidation. By consolidating the latest insights and knowledge, this comprehensive review guides readers through the evolving landscape of advanced PEC technologies. Furthermore, it provides insights into prospective developments in this evolving field, shedding light on the paths toward sustainable energy solutions and climate mitigation.