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- W2018267084 abstract "Normal pulse voltammetry (NPV) is applied to operating proton exchange membrane fuel cells (PEMFCs) using a high current potentiostat. Kinetic information including the Tafel slope and exchange current density for the oxygen reduction reaction (ORR) is directly extracted from the steady state voltammetric response obtained from the NPV experiment. Temperature, relative humidity, and conditioning potential are varied independently to observe their effect on the PEMFC through the Tafel slope calculation. This NPV technique provides kinetic information previously collected through ex situ techniques such as rotating disc electrodes. The ability to probe in situ the kinetic effects of catalysts within operational PEMFCs has never been proposed in this detail. NPV measurements take less than 30 seconds to conduct thus making the process simple and efficient. The observed Tafel slope is about 60mV/decade for oxide covered platinum and 120mV/decade for oxide free platinum." @default.
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- W2018267084 date "2019-12-17" @default.
- W2018267084 modified "2023-09-24" @default.
- W2018267084 title "Normal Pulse Voltammetry: In Situ Kinetic Analysis of Proton Exchange Membrane Fuel Cells" @default.
- W2018267084 doi "https://doi.org/10.1149/1.3484623" @default.
- W2018267084 hasPublicationYear "2019" @default.
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