Direct power charge and discharge using the glycolic acid/oxalic acid redox couple toward carbon-neutral energy circulation

M. Yamauchi, R. Watanabe, S. Hata, S. Kitano, M. Sadakiyo, T. Takeguchi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    We demonstrated an electric power circulation method that does not emit CO2 and is based on the glycolic acid (GC)/oxalic acid (OX) redox couple. Electric power charge in GC was achieved through OX electro-reduction with high selectivity (>98%) using purely anatase-type Ti02 spheres in the potential region of -0.5 to -0.7 V vs. RHE at 50 °C. We also realized GC production via the combination of electrochemical OX reduction and electro-oxidation of water with the help of renewable light energy for the first time. Furthermore, we succeeded in power generation via the selective electro-oxidation of GC to OX without CO2 emission. These results are the first experimental proof of the carbon-neutral power circulation involving an alcohol/carboxylic acid redox couple.

    Original languageEnglish
    Title of host publicationElectrosynthesis of Fuels 4
    EditorsH. Xu, G. Brisard, X.-D. Zhou, J. Flake, J. Staser, T. Gur, M. Mogensen, W. Mustain
    PublisherElectrochemical Society Inc.
    Pages17-21
    Number of pages5
    Edition43
    ISBN (Electronic)9781607685395
    DOIs
    Publication statusPublished - 2016
    EventSymposium on Electrosynthesis of Fuels 4 - PRiME 2016/230th ECS Meeting - Honolulu, United States
    Duration: Oct 2 2016Oct 7 2016

    Publication series

    NameECS Transactions
    Number43
    Volume75
    ISSN (Print)1938-6737
    ISSN (Electronic)1938-5862

    Other

    OtherSymposium on Electrosynthesis of Fuels 4 - PRiME 2016/230th ECS Meeting
    CountryUnited States
    CityHonolulu
    Period10/2/1610/7/16

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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