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Showing 1–3 of 3 results
Advanced filters: Author: Junsic Cho Clear advanced filters

  • Electrochemical CO2 conversion to methane offers a promising solution for the large-scale storage of renewable electricity, yet the catalytic selectivity at high current density still needs to be refined. Here the authors report to use both dissolved CO2 and in-situ generated CO2 from bicarbonate to sustain high local CO2 concentration around Cu electrode and thus achieve selective CO2 conversion to methane.

    • Junsic Cho
    • Taejung Lim
    • Chang Hyuck Choi
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-10

  • Alkali cations in electrolytes are commonly considered chemically inert species, but their role has recently been called into question. Now, using in situ spectroscopy and molecular dynamics simulations, it is shown that alkali cations couple with intermediates in the oxygen reduction reaction, acting as cocatalysts.

    • Sang Gu Ji
    • Minho M. Kim
    • Chang Hyuck Choi
    Research
    Nature Catalysis
    Volume: 7, P: 1330-1338

  • Inexpensive Fe–N–C single-atom catalysts are a promising solution to replace costly Pt-based cathode catalysts in fuel cells, but they typically suffer from low durability. Now, the degradation mechanisms of Fe–N–C catalysts are identified under operando conditions as a function of time, and potential solutions are proposed.

    • Geunsu Bae
    • Minho M. Kim
    • Chang Hyuck Choi
    Research
    Nature Catalysis
    Volume: 6, P: 1140-1150