W1S1011 Hydrophobic Carbon Cloth GDL (PTFE-Treated, with MPL)

W1S1011 is a carbon cloth gas diffusion layer (GDL) made of woven carbon fibers, treated with PTFE and carrying a microporous layer (MPL) on one side. It is about 410 µm thick with an areal weight of 200 g/m². It is supplied as a 400 × 400 mm sheet and can be cut to size.

Its woven structure is more flexible and thicker than carbon paper. Its sibling W0S1011 is a plain carbon cloth without PTFE or MPL. W1S1011 is used when a ready-made water-repellent GDL with MPL is needed, for example as anode/cathode GDL in PEM fuel cells or as cathode GDL in PEM water electrolyzers. Catalyst ink is normally coated on the MPL side.

Key Features

• Woven carbon cloth GDL, PTFE-treated
• Microporous layer (MPL) on one side
• Thickness 0.41 mm, areal weight 200 g/m² (manufacturer data)
• Through-plane resistance < 13 mΩ·cm² (manufacturer data)
• Flexible woven structure compared with paper
• 400 × 400 mm sheet; can be cut to size
• Cutting can release fine carbon fibers and dust; work in a well-ventilated area

Technical Specifications

Applications

• Anode/cathode gas diffusion layer in PEM fuel cells
• GDL in direct methanol (DMFC) and phosphoric acid (PAFC) fuel cells
• Cathode GDL in PEM water electrolyzers
• Gas diffusion electrode substrate for CO₂ and oxygen reduction studies
• Air electrode substrate in metal-air batteries