4.7 Article

On factors limiting the performance of photoelectrochemical CO2 reduction

Journal

JOURNAL OF CHEMICAL PHYSICS
Volume 152, Issue 10, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.5141390

Keywords

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Funding

  1. National Natural Science Foundation of China [51906199, 51888103]
  2. Natural Science Basic Research Program of Shaanxi Province [2019JQ-117]
  3. Fundamental Research Funds for the Central Universities [xzy012019016]
  4. Initiative Postdocs Supporting Program

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The photoelectrochemical CO2 reduction reaction (PEC-CO2RR) is a promising artificial photosynthetic system for storing solar energy as the energy of chemical bonds and stabilizing the atmospheric CO2 level. An applicable PEC-CO2RR is expected to have broad light absorption, high selectivity to a single product, and high solar to fuel efficiency. However, the PEC-CO2RR still faces challenges from complex reaction pathways, obstructed mass transfer, and large photovoltage requirements. The goal of this perspective is to point out some of the limitations of PEC-CO2RR to a practical application. In brief, we discuss the basic concepts of PEC-CO2RR and summarize state-of-the-art progress. Moreover, we highlight the remaining challenges to both science and engineering and propose the key steps in developing a fully functional PEC-CO2RR system. Finally, an ideal PEC-CO2RR system is proposed for future studies, which is essentially wireless and combines the advantages of minimized polarization loss and broad light absorption.

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