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Enhancing CO2 electrolysis through synergistic control of non-stoichiometry and doping to tune cathode surface structures

Author

Listed:
  • Lingting Ye

    (Key Lab of Design & Assembly of Functional Nanostructure, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences)

  • Minyi Zhang

    (State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences)

  • Ping Huang

    (Key Lab of Design & Assembly of Functional Nanostructure, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences)

  • Guocong Guo

    (State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences)

  • Maochun Hong

    (State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences)

  • Chunsen Li

    (State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences)

  • John T. S. Irvine

    (Key Lab of Design & Assembly of Functional Nanostructure, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences
    School of Chemistry, University of St Andrews)

  • Kui Xie

    (Key Lab of Design & Assembly of Functional Nanostructure, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences)

Abstract

Sustainable future energy scenarios require significant efficiency improvements in both electricity generation and storage. High-temperature solid oxide cells, and in particular carbon dioxide electrolysers, afford chemical storage of available electricity that can both stabilize and extend the utilization of renewables. Here we present a double doping strategy to facilitate CO2 reduction at perovskite titanate cathode surfaces, promoting adsorption/activation by making use of redox active dopants such as Mn linked to oxygen vacancies and dopants such as Ni that afford metal nanoparticle exsolution. Combined experimental characterization and first-principle calculations reveal that the adsorbed and activated CO2 adopts an intermediate chemical state between a carbon dioxide molecule and a carbonate ion. The dual doping strategy provides optimal performance with no degradation being observed after 100 h of high-temperature operation and 10 redox cycles, suggesting a reliable cathode material for CO2 electrolysis.

Suggested Citation

  • Lingting Ye & Minyi Zhang & Ping Huang & Guocong Guo & Maochun Hong & Chunsen Li & John T. S. Irvine & Kui Xie, 2017. "Enhancing CO2 electrolysis through synergistic control of non-stoichiometry and doping to tune cathode surface structures," Nature Communications, Nature, vol. 8(1), pages 1-10, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14785
    DOI: 10.1038/ncomms14785
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    Cited by:

    1. Eleonora Calì & Melonie P. Thomas & Rama Vasudevan & Ji Wu & Oriol Gavalda-Diaz & Katharina Marquardt & Eduardo Saiz & Dragos Neagu & Raymond R. Unocic & Stephen C. Parker & Beth S. Guiton & David J. , 2023. "Real-time insight into the multistage mechanism of nanoparticle exsolution from a perovskite host surface," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Bo-Wen Zhang & Meng-Nan Zhu & Min-Rui Gao & Xiuan Xi & Nanqi Duan & Zhou Chen & Ren-Fei Feng & Hongbo Zeng & Jing-Li Luo, 2022. "Boosting the stability of perovskites with exsolved nanoparticles by B-site supplement mechanism," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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