Phosphorous Acid Impurities in Phosphoric Acid Fuel Cell Electrolytes: II . Effects on the Oxygen Reduction Reaction at Platinum Electrodes

1994 ◽  
Vol 141 (12) ◽  
pp. 3332-3335 ◽  
Author(s):  
Noboru Sugishima ◽  
James T. Hinatsu ◽  
Frank R. Foulkes
Keyword(s):  
Fuel Cell ◽  
Phosphoric Acid ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Phosphorous Acid ◽  
Reduction Reaction ◽  
Platinum Electrodes ◽  
Phosphoric Acid Fuel Cell ◽  
Cell Electrolytes ◽  
Fuel Cell Electrolytes

scholarly journals Application of a non-noble Fe-N-C catalyst for oxygen reduction reaction in an alkaline direct ethanol fuel cell

2018 ◽  
Vol 115 ◽  
pp. 226-237 ◽  
Author(s):  
Luigi Osmieri ◽  
Ricardo Escudero-Cid ◽  
Alessandro H.A. Monteverde Videla ◽  
Pilar Ocón ◽  
Stefania Specchia
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Ethanol Fuel ◽  
Direct Ethanol Fuel Cell

scholarly journals Effect of hydrophobic cations on the oxygen reduction reaction on single‒crystal platinum electrodes

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Tomoaki Kumeda ◽  
Hiroo Tajiri ◽  
Osami Sakata ◽  
Nagahiro Hoshi ◽  
Masashi Nakamura
Keyword(s):  
Oxygen Reduction Reaction ◽  
Single Crystal ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Platinum Electrodes

scholarly journals Synthesis of P- and N-doped carbon catalysts for the oxygen reduction reaction via controlled phosphoric acid treatment of folic acid

2019 ◽  
Author(s):  
Rieko Kobayashi ◽  
Takafumi Ishii ◽  
Yasuo Imashiro ◽  
Jun-ichi Ozaki
Keyword(s):  
Folic Acid ◽  
Phosphoric Acid ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Acid Treatment ◽  
Reduction Reaction ◽  
P Content ◽  
Orr Activity ◽  
Carbon Catalysts ◽  
Pyridinic N

Herein, we synthesized N- and P-doped carbons (PN-doped carbons) by controlled phosphoric acid treatment (CPAT) of folic acid (FA) and probed their ability to catalyze the oxygen reduction reaction at the cathode of a fuel cell. Precursors obtained by heating FA in the presence of phosphoric acid at temperatures of 400–1000 °C were further annealed at 1000 °C to afford PN-doped carbons. The extent of precursor P-doping was maximized at 700 °C, and the use of higher temperatures resulted in activation and increased porosity rather than in increased P content. The P/C atomic ratios of PN-doped carbons were well correlated with those of precursors, which indicated that CPAT was well suited for the preparation of PN-doped carbons. Carbon prepared using a CPAT temperature of 700 °C exhibited the highest oxygen reduction reaction (ORR) activity and was shown to contain –C–PO2 and –C–PO3 moieties as the major P species and pyridinic N as the major N species; moreover, no N–P bonds were detected. The presence of –C–PO2 and –C–PO3 units was concluded to decrease the work function and thus raise the Fermi level above the standard O2/H2O reduction potential, which resulted in enhanced ORR activity. Finally, CPAT was concluded to be applicable to the synthesis of PN-doped carbons from N-containing organic compounds other than FA.

Pt Surface Oxides and Oxygen Reduction Reaction Kinetics Under Dynamic PEM Fuel Cell Operation

2021 ◽  
Vol MA2021-02 (36) ◽  
pp. 1018-1018
Author(s):  
Venkata Yarlagadda ◽  
Wenbin Gu ◽  
Srikanth Arisetty ◽  
Anusorn Kongkanand
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Reaction Kinetics ◽  
Oxygen Reduction ◽  
Pem Fuel Cell ◽  
Reduction Reaction ◽  
Surface Oxides ◽  
Fuel Cell Operation
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