Oyin Romiluyi publishes a paper on MEA design for CO2 reduction

Submitted by HBoyer on Wed, 03/23/2022 - 03:53
Schematic of the catalyst-layer microenvironment and ionomer-catalyst distribution on a catalyst and support nanostructure based on the I:Cat ratio and ionomer content/coverage.

Paper is titled: "Membrane-electrode assembly design parameters for optimal CO2 reduction" doi.org/10.1002/elsa.202100186

In this work:

  • A Ag CO2R membrane-electrode assembly (MEA) that operates between 200 mA cm-2 and 1 A cm-2 with CO FEs of 78–91% is developed via systematic engineering of the cathode catalyst-ionomer microenvironment
  • Quantified the role of the cathodic ionomer-to-catalyst (I:Cat) ratio, catalyst loading, catalyst-layer thickness, and anode exchange-solution concentration on CO2R activity, cell potential, and selectivity for the first time to result in optimized design and operating conditions.

Schematic shows the catalyst-layer microenvironment and ionomer-catalyst distribution on a catalyst and support nanostructure based on the I:Cat ratio and ionomer content/coverage.