Nitrogen-doped CNTs, directly grown on a carbon cloth (CNT/CC) hybrid with polybenzimidazole (FBI), are utilized as hybrid electrodes in high-temperature proton exchange membrane fuel cells (HT-PEMFCs). The use of a rotation holder for pulse electro-depositing Pt nanoparticles (NPs) on a CNT electrode is developed herein. The electrochemical surface area of the Pt NPs/PBI-CNTs is approximately 161 cm(2) mg(-1) and the grain size is around 8-9 nm. A comparative study of 0.09 mg cm(-2) Pt NPs on a PBI-CNT (Pt/PBI-CNT) electrode and 0.8 mg cm-2 Pt NPs on FBI carbon black (Pt/PBI-CB) for reducing oxygen at the cathode was carried out. In H-2/O-2 HT-PEMFC single cell tests, a low Pt-loaded (0.09 mg cm(-2)) Pt/PBI-CNT/CC electrode outperformed a high Pt-loaded (0.8 mg cm(-2)) Pt/PBI-CB/CC electrode with maximum power densities of 620 mW cm(-2) and 468 mW cm(-2), respectively, at 160 degrees C. The enhanced performance is attributed to the well-controlled grain size and Pt loading of Pt NPs on the PBI-CNT in the cathode, which provide the highly active catalyst and the good electrical conductivity carbon support. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.