Uniformly distributed ionomer in the catalyst layer forms efficient mass transfer pathways which improve the performance. (IMAGE)

Science China Press

Uniformly distributed ionomer in the catalyst layer forms efficient mass transfer pathways which improve the performance.

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A pre-confinement method was developed to construct a gas diffusion electrode for electrochemical CO2 reduction reaction with the uniformly distributed ionomer. The obtained electrode exhibits a low cell voltage of about 3.3 V at 300 mA cm−2 and a high CO Faradaic efficiency of over 90% at 600 mA cm−2 because of the enhanced mass transfer of ions and reactant.

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