GDS180S Hydrophilic Carbon Paper (No PTFE, No MPL)

GDS180S is a plain carbon fiber paper without PTFE treatment or a microporous layer (MPL). It is 180 µm thick, weighs about 50 g/m² and has about 77% porosity; it is supplied as a 100 × 100 mm sheet. Without water-repellent PTFE, liquid electrolyte enters its pores more easily than in PTFE-treated papers; this is what "hydrophilic" means here.

Unlike SGL 22BB, 38BC and 39BB, it carries no ready-made water-repellent treatment or MPL. It is therefore a suitable substrate for work where you apply your own PTFE treatment, MPL or catalyst layer, and for electrodes that should be wetted by liquid electrolyte. Its through-plane resistance is low (< 7 mΩ·cm²).

Key Features

• Plain carbon fiber paper without PTFE treatment or MPL
• Thickness 180 µm, areal weight about 50 g/m² (manufacturer data)
• Porosity about 77%; high gas permeability (< 10 s)
• Low through-plane resistance: < 7 mΩ·cm² (manufacturer data)
• Suitable substrate for coating your own MPL or catalyst layer
• 100 × 100 mm sheet
• Cutting can release fine carbon fibers and dust; work in a well-ventilated area

Technical Specifications

Applications

• Electrode substrate for coating catalyst ink
• Preparing a GDL with your own PTFE/MPL treatment
• PEM and direct methanol fuel cell research
• Electrodes that should be wetted by liquid electrolyte
• Electrode in microbial fuel cells and bioelectrochemical systems