Abstract In this study a new type of carbon support materials for proton exchange membrane fuel cells (PEMFC) was evaluated CdS/CNT/C. There are CNT/C condition ratio 1:1, 1:1.5, 1:2 and 1:2.5 heat-treated CNT/C at 900 °C CdS/CNT/C spray on C supporter by impregnation method. Immersed the CNT/C electrode in 1,10-phenanthroline (Phen) aqueous solution and the subsequent immersion in CdCl2 aqueous solution for times to grow an appropriate amount of CdS nanoparticles. The as-prepared samples were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and XRD-X-ray Diffactometer (XRD) and electrical resistivity of the electrode was measured by Van der Pauw and Fuel cell Test station. The results, SEM revealed a three dimensional CNT particles on carbon supports were in the range of 31.55 ± 8.8 nm, Metallic specific surface area (Sg) 1,352 m2/g ,TEM CdS particles on CNT/C were in the range of 4.34 ± 1.35 nm, Metallic specific surface area (Sg) 6.7 m2/g CdS particles observed to have an average size of 3.98 nm for XRD. Electrical resistivity of the electrode was measured by Van der Pauw the electrode prepared increase CNT electrical conductivity is decreased, the condition CNT/C 1:1.5 had more catalytic site thus gave appropriate. As evidenced from the Fuel cell Test station for the CdS/CNT/C the condition 1:1.5 had more Pt/C catalytic site and thus gave a higher power densitye.