Solar‐Driven Simultaneous Electrochemical CO2 Reduction and Water Oxidation Using Perovskite Solar Cells

Jaehoon Chung, Nam Joong Jeon, Jun Hong Noh

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    The utilization of solar energy into electrochemical reduction systems has received con-siderable attention. Most of these attempts have been conducted in a single electrolyte without a membrane. Here, we report the system combined by the electrochemical CO2 reduction on the Au dendrite electrode and the water oxidation on the Co‐Pi electrode with a Nafion membrane. An efficient reduction of CO2 to CO in the cathode using the proton from water oxidation in the anode is conducted using perovskite solar cells under 1 sun condition. The sustainable reaction condition is secured by balancing each reaction rate based on products analysis. Through this system, we col-lect reduction products such as CO and H2 and oxidation product, O2, separately. Employing separation of each electrode system and series‐connected perovskite solar cells, we achieve 8% of solar to fuel efficiency with 85% of CO selectivity under 1 sun illumination.

    Original languageEnglish
    Article number270
    JournalEnergies
    Volume15
    Issue number1
    DOIs
    Publication statusPublished - 2022 Jan 1

    Bibliographical note

    Funding Information:
    Funding: This research was supported by a grant from the Korea Research Institute of Chemical Technology (KRICT)(SS2122‐20).

    Publisher Copyright:
    © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

    Keywords

    • CO reduction
    • Electrochemical
    • Perovskite
    • Solar to fuel
    • Water oxidation

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Fuel Technology
    • Energy Engineering and Power Technology
    • Energy (miscellaneous)
    • Control and Optimization
    • Electrical and Electronic Engineering

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