Gas diffusion enhanced electrode with ultrathin superhydrophobic macropore structure for acidic CO2 electroreduction

Abstract Carbon dioxide (CO 2 ) electroreduction reaction (CO 2 RR) offers a promising strategy for the conversion of CO 2 into valuable chemicals and fuels. CO 2 RR in acidic electrolytes would have various advantages due to the suppression of carbonate formation. However, its reaction rate is severely limited by the slow CO 2 diffusion due to the absence of hydroxide that facilitates the CO 2 diffusion in an acidic environment. Here, we design an optimal architecture of a gas diffusion electrode (GDE) employing a copper-based ultrathin superhydrophobic macroporous layer, in which the CO 2 diffusion is highly enhanced. This GDE retains its applicability even under mechanical deformation conditions. The CO 2…

• NE
  New Energy and Industrial Technology Development Organization

  Award: JPNP18016
• JS
  Japan Society for the Promotion of Science

  Awards: JPNP18016, JP23H00313, JP18H05517, JP22K19088
• JS
  Japan Science and Technology Agency

  Awards: JPNP18016, JPMJFS2132
• MR
  Moonshot Research and Development Program

  Award: JPNP18016