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Related Experiment Video

Updated: May 4, 2026

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
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High-performance gas diffusion electrodes for next-generation CO2 conversion technologies.

D Yureka Imali1, E Chavin J Perera1, M N Kaumal1

  • 1Department of Chemistry, University of Colombo Colombo 03 Sri Lanka mnkaumal@sci.cmb.ac.lk.

RSC Advances
|January 5, 2026
PubMed
Summary

Advancements in gas diffusion electrode (GDE) design and materials are crucial for electrochemical CO2 reduction (eCO2R) to reach industrial rates. New GDE architectures enhance performance, paving the way for efficient CO2 utilization technologies.

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Chemical Engineering

Background:

  • Electrochemical CO2 reduction (eCO2R) is a promising CO2 utilization technology.
  • Current eCO2R processes face limitations in industrially relevant product formation rates.
  • Gas diffusion electrodes (GDEs) are critical components in eCO2R, with their structure significantly impacting performance.

Purpose of the Study:

  • To review recent advancements in GDE structural design and materials for eCO2R.
  • To explore the structure-performance relationship in GDEs for eCO2R.
  • To identify current challenges and future research directions for industrial eCO2R.

Main Methods:

  • Review of recent literature on GDEs for eCO2R.
  • Analysis of structure-performance relationships in various GDE designs.
  • Discussion of catalyst, gas diffusion structure, electrolyte, and interface optimization.

Main Results:

  • Transition from planar GDEs to hollow fiber GDEs (HFGDEs) and advanced planar designs (mesh, woven, carbon-free, heteroarchitectural).
  • Improved triple-phase boundary formation and mass transfer in advanced GDEs.
  • Achieved high current densities (~3 A cm-2), high faradaic efficiencies, and extended stability (>100 h).

Conclusions:

  • Optimized GDE design and materials are key to overcoming eCO2R limitations.
  • Advanced GDEs show potential for industrially viable CO2 utilization.
  • Further research is needed to address bottlenecks and facilitate practical implementation of GDE-based eCO2R systems.