Electrocatalysis of reformate tolerance in proton exchange membranes fuel cells: Part I

Efficient usage of highly dispersed Pt on carbon nanotubes for electrode catalysts of polymer electrolyte fuel cells

“…The Pt loads with the unit of mg/cm 2 and mg/W for the HPt-CNT, the KPt-CNT, and the Pt-CB were calculated with cast catalyst weight, electrode area, and Pt content. Table 1 includes the Pt loads of a current thin-Pt-film PEFC [1], the E-TEK commercial electrodes [24], and the Pt-deposited XC72R (CB) with using soluble electrolyte polymer Nafion ® 117 [25]. It is shown that the KPt-CNT required the least Pt load to achieve the current PEFC performance below 500 mA/cm 2 and cut 60% Pt of the Pt-CB.…”

Degradation mechanism study of perfluorinated proton exchange membrane under fuel cell operating conditions

“…The array block has 25 sensors glued into the block on the opposite side facing one of the testing spots on the array MEA and a pin jack on the other side used for electrical connection. The heating control and gas supplies to this fuel cell were built in-house to enable the cell to run at ambient pressure and constant temperature up to 80 • C [28]. Gases were passed through humidification bottles, which were kept at a temperature 10 • C higher than that of the cell in order to ensure the 100% humidification of the MEA.…”

“…Typical loading of ionomer layer was in the range of 0.8-1.0 mg/cm 2 . MEAs were prepared by hot-pressing the electrodes to the polymer membrane according to procedures described in detail earlier [28].…”

Carbon‐Supported, Selenium‐Modified Ruthenium–Molybdenum Catalysts for Oxygen Reduction in Acidic Media

“…Details of the electrode fabrication and fuel cell tests are described elsewhere. [32] The anode was a platinized commercial gas-diffusion electrode of 30 % Pt/C (0.5 mg Pt/C ). The cathode electrode loading was also kept at 0.5 mg cm were prepared by hot-pressing at 6.9 MPa and 130 8C for 4 min.…”