cff-version: 1.2.0
abstract: "<p>Electrochemical reduction of CO2&nbsp;presents an attractive way to store renew- able energy in chemical bonds in a potentially carbon-neutral way. However, the available electrolyzers suffer from intrinsic problems, like&nbsp;flooding and salt accumulation, that must be overcome to industrialize the technology. To mitigate&nbsp;flooding and salt precipitation issues, researchers have used super- hydrophobic electrodes based on either expanded polytetrafluoroethylene (ePTFE) gas-diffusion layers (GDL’s), or carbon-based GDL’s with added PTFE. While the PTFE backbone is highly resistant to&nbsp;flooding, the non-conductive nature of PTFE means that without additional current collection the catalyst layer itself is responsible for electron-dispersion, which penalizes system efficiency and stability. In this work, we present operando results that illustrate that the current distribution and electrical potential distribution is far from a uniform distribution in thin catalyst layers (~50 nm) deposited onto ePTFE GDL’s. We then compare the effects of thicker catalyst layers (~500 nm) and a newly developed non-invasive current collector (NICC). The NICC can main- tain more uniform current distributions with 10-fold thinner catalyst layers while improving stability towards ethylene (≥&nbsp;30%) by approximately two-fold.</p>"
authors:
  - family-names: Iglesias van Montfort
    given-names: Hugo-Pieter
  - family-names: Burdyny
    given-names: Tom
title: "Data underlying the publication: Non-invasive current collectors for improved current-density distribution during CO2 electrolysis on super-hydrophobic electrodes"
keywords:
version: 1
identifiers:
  - type: doi
    value: 10.4121/2fb59b38-125b-429f-8e53-372bf8cc1291.v1
license: CC BY-NC-ND 4.0
date-released: 2024-03-28