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Abstract Heat treated Fe-N/C materials which are highly effective oxygen reduction catalysts in alkaline and acid, show a significant kinetic isotope effect (KIE). The values in acid (~ 3.4) and alkaline… Click to show full abstract
Abstract Heat treated Fe-N/C materials which are highly effective oxygen reduction catalysts in alkaline and acid, show a significant kinetic isotope effect (KIE). The values in acid (~ 3.4) and alkaline (~ 2.5) are much larger than the value for the metal free catalyst in acid (~ 1.8) suggesting that the rate determining step (RDS) is a proton coupled electron transfer in acid with a significant pathway involving a proton independent step under an alkaline environment.
Keywords:
isotope effect;
kinetic isotope;
oxygen reduction
Journal Title: Electrochemistry Communications
Year Published: 2017
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Journal Title: Electrochemistry Communications
Year Published: 2017
Link to full text (if available)
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recommendations!