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Related Experiment Videos

A Redox Fuel Cell That Operates with Methane as Fuel at 120{degrees}C.

S H Bergens, C B Gorman, G T Palmore

    Science (New York, N.Y.)
    |September 2, 1994
    PubMed
    Summary
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    Platinum black catalyzes methane oxidation using iron(III) to produce iron(II). A novel redox fuel cell utilizes this reaction, achieving a power output of 8.1 mW/cm³.

    Area of Science:

    • Electrochemistry
    • Catalysis
    • Methane Oxidation

    Background:

    • Methane oxidation is crucial for energy applications.
    • Developing efficient catalysts for methane conversion is an ongoing challenge.
    • Redox fuel cells offer a promising avenue for electrochemical energy conversion.

    Purpose of the Study:

    • To investigate platinum black as a catalyst for methane oxidation by iron(III).
    • To develop and characterize a novel redox fuel cell utilizing this catalytic reaction.
    • To assess the electrochemical performance of the developed fuel cell.

    Main Methods:

    • Methane oxidation catalyzed by platinum black in sulfuric acid was studied.
    • A liquid reformer coupled with a redox fuel cell was assembled.

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  • The fuel cell employed a vanadium-nitric acid-O(2) system for oxygen reduction.

    • Main Results:

    • Platinum black demonstrated efficient catalysis for methane oxidation to CO2 and Fe(II).
    • The oxidation rate reached 4.83 x 10(-2) mol Fe(II)/g-atom Pt/s.
    • The fuel cell achieved an open-circuit voltage of 0.48 V and a power density of 8.1 mW/cm³.

    Conclusions:

    • Platinum black is an effective catalyst for methane oxidation by iron(III).
    • The developed redox fuel cell successfully converted methane to electrochemical energy.
    • This system shows potential for methane valorization and energy generation.