Pt-Oxide Coverage-Dependent Oxygen Reduction Reaction (ORR) Kinetics
Source abstract
Abstract
Oxygen Reduction Reaction (ORR) currents have been measured under the potential range of an operating fuel cell (0.72–0.9 Volts) while keeping proton and oxygen transport-related overpotentials insignificant by testing with pure O 2 , at 100%RH and at low current densities. Low potential points are achieved by reducing the platinum loading on the cathode and operating under sub-ambient (<101.3 kPa abs ) pressure. The resulting experimental data are fit to Pt-oxide-coverage-dependent kinetics and the kinetic parameters extracted. The impact of Pt-oxide on apparent Tafel-slope transition (i.e., a function of potential) and on ORR performance is discussed.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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