AvCarb Material Solution’s Gas Diffusion System GDS2120 P75 combines AvCarb's proprietary carbon fiber paper, a PTFE treatment, and micro-porous layer coating, designed for the rigorous demands of specific fuel cell applications such as PEMFC, DMFC, and PAFC.

AvCarb P75 is the base substrate used in GDS2120.

AvCarb Gas Diffusion Systems (GDS) Carbon Paper Properties Sheet

AvCarb Gas Diffusion Systems (GDS) Carbon Paper Selection Guide

Gas Diffusion Layer Properties
Material Type	Carbon Fiber Paper
Nominal Thickness	248 microns (@ 5.00 N/cm²)
Base Material	AvCarb P75
Bulk Density	0.40 g/cm3 (@ 0.68 N/cm² / 1psi)
Break Strength machine direction	25 MPa
Break Strength cross machine direction	15 MPa
Basis Weight	101 g/m²
Compressibility	11.0% ((22N - 113N)/22 x 100%)
Stiffness machine direction	21.0 Taber
Stiffness cross machine direction	14.7 Taber
PTFE Treatment	Yes
Microporous Layer (MPL)	Yes, on one side
Membrane Properties
Through-Plane Conductivity (mS/cm)	<14.0 mOhm*cm²