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A high-performance oxygen evolution catalyst in neutral-pH for sunlight-driven CO2 reduction

Author

Listed:
  • Li Qin Zhou

    (Toyota Research Institute of North America)

  • Chen Ling

    (Toyota Research Institute of North America)

  • Hui Zhou

    (Binghamton University)

  • Xiang Wang

    (University of Pittsburgh)

  • Joseph Liao

    (Enli Technology Co. Ltd.)

  • Gunugunuri K. Reddy

    (Toyota Research Institute of North America)

  • Liangzi Deng

    (University of Houston)

  • Torin C. Peck

    (Toyota Research Institute of North America)

  • Ruigang Zhang

    (Toyota Research Institute of North America)

  • M. Stanley Whittingham

    (Binghamton University)

  • Chongmin Wang

    (Pacific Northwest National Laboratory)

  • Ching-Wu Chu

    (University of Houston
    Lawrence Berkeley National Laboratory)

  • Yan Yao

    (University of Houston)

  • Hongfei Jia

    (Toyota Research Institute of North America)

Abstract

The efficiency of sunlight-driven reduction of carbon dioxide (CO2), a process mimicking the photosynthesis in nature that integrates the light harvester and electrolysis cell to convert CO2 into valuable chemicals, is greatly limited by the sluggish kinetics of oxygen evolution in pH-neutral conditions. Current non-noble metal oxide catalysts developed to drive oxygen evolution in alkaline solution have poor performance in neutral solutions. Here we report a highly active and stable oxygen evolution catalyst in neutral pH, Brownmillerite Sr2GaCoO5, with the specific activity about one order of magnitude higher than that of widely used iridium oxide catalyst. Using Sr2GaCoO5 to catalyze oxygen evolution, the integrated CO2 reduction achieves the average solar-to-CO efficiency of 13.9% with no appreciable performance degradation in 19 h of operation. Our results not only set a record for the efficiency in sunlight-driven CO2 reduction, but open new opportunities towards the realization of practical CO2 reduction systems.

Suggested Citation

  • Li Qin Zhou & Chen Ling & Hui Zhou & Xiang Wang & Joseph Liao & Gunugunuri K. Reddy & Liangzi Deng & Torin C. Peck & Ruigang Zhang & M. Stanley Whittingham & Chongmin Wang & Ching-Wu Chu & Yan Yao & H, 2019. "A high-performance oxygen evolution catalyst in neutral-pH for sunlight-driven CO2 reduction," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12009-8
    DOI: 10.1038/s41467-019-12009-8
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    Cited by:

    1. TsingHai Wang & Cheng-Di Dong & Jui-Yen Lin & Chiu-Wen Chen & Jo-Shu Chang & Hyunook Kim & Chin-Pao Huang & Chang-Mao Hung, 2021. "Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective," Sustainability, MDPI, vol. 13(12), pages 1-31, June.
    2. Yang Liu & Jianhui Sun & Houhou Huang & Linlu Bai & Xiaomeng Zhao & Binhong Qu & Lunqiao Xiong & Fuquan Bai & Junwang Tang & Liqiang Jing, 2023. "Improving CO2 photoconversion with ionic liquid and Co single atoms," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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