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H2-CO2 polymer electrolyte fuel cell that generates power while evolving CH4 at the Pt0.8Ru0.2/C cathode.

ABSTRACT: Generating electric power using CO2 as a reactant is challenging because the electroreduction of CO2 usually requires a large overpotential. Herein, we report the design and development of a polymer electrolyte fuel cell driven by feeding H2 and CO2 to the anode (Pt/C) and cathode (Pt0.8Ru0.2/C), respectively, based on their theoretical electrode potentials. Pt-Ru/C is a promising electrocatalysts for CO2 reduction at a low overpotential; consequently, CH4 is continuously produced through CO2 reduction with an enhanced faradaic efficiency (18.2%) and without an overpotential (at 0.20 V vs. RHE) was achieved when dilute CO2 is fed at a cell temperature of 40 °C. Significantly, the cell generated electric power (0.14 mW cm-2) while simultaneously yielding CH4 at 86.3 μmol g-1 h-1. These results show that a H2-CO2 fuel cell is a promising technology for promoting the carbon capture and utilization (CCU) strategy.

SUBMITTER: Matsuda S 

PROVIDER: S-EPMC8052373 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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H<sub>2</sub>-CO<sub>2</sub> polymer electrolyte fuel cell that generates power while evolving CH<sub>4</sub> at the Pt<sub>0.8</sub>Ru<sub>0.2</sub>/C cathode.

Matsuda Shofu S   Niitsuma Yuuki Y   Yoshida Yuta Y   Umeda Minoru M  

Scientific reports 20210416 1

Generating electric power using CO<sub>2</sub> as a reactant is challenging because the electroreduction of CO<sub>2</sub> usually requires a large overpotential. Herein, we report the design and development of a polymer electrolyte fuel cell driven by feeding H<sub>2</sub> and CO<sub>2</sub> to the anode (Pt/C) and cathode (Pt<sub>0.8</sub>Ru<sub>0.2</sub>/C), respectively, based on their theoretical electrode potentials. Pt-Ru/C is a promising electrocatalysts for CO<sub>2</sub> reduction at a  ...[more]

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