page_title: Gas diffusion electrode
section_title: Bonded electrode
hierarchical_section_title: Gas diffusion electrode / Bonded electrode
caption_attribution_description: REM picture of a PTFE/Ag gas diffusion electrode
context_page_description: Gas diffusion electrodes are electrodes with a conjunction of a solid, liquid and gaseous interface, and an electrical conducting catalyst supporting an electrochemical reaction between the liquid and the gaseous phase.
context_section_description: Since about 1970, PTFEs are used to produce an electrode having both hydrophilic and hydrophobic properties while chemically stable and which can be used as binders. This means that, in places with a high proportion of PTFE, no electrolyte can penetrate the pore system and vice versa. In that case the catalyst itself should be non-hydrophobic.
caption: SEM-image from the PTFE-silver electrode
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