1999
DOI: 10.1016/s0013-4686(98)00384-3
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Oxygen reduction electrocatalysis: ageing of pyrolyzed cobalt macrocycles dispersed on an active carbon

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Cited by 109 publications
(70 citation statements)
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“…These electrocatalysts thus show superior performance with respect to the oxygen reduction reaction (ORR), compared to other non-platinum electrocatalysts demonstrated to date [2][3][4][5]. This paper reports on the structural studies of cobalt porphyrin-based electrocatalysts using X-ray Photoelectron Spectroscopy (XPS) and Principal Component Analysis (PCA).…”
Section: Introductionmentioning
confidence: 99%
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“…These electrocatalysts thus show superior performance with respect to the oxygen reduction reaction (ORR), compared to other non-platinum electrocatalysts demonstrated to date [2][3][4][5]. This paper reports on the structural studies of cobalt porphyrin-based electrocatalysts using X-ray Photoelectron Spectroscopy (XPS) and Principal Component Analysis (PCA).…”
Section: Introductionmentioning
confidence: 99%
“…Metals containing macrocyclic compounds such as cobalt and iron phthalocyanine and porphyrins heat treated at various temperatures have been investigated by XPS for a number of years [6][7][8][9][10][11][12][13][14][15][16][17][18]. In the first reports in the literature, the background noise level in the spectra was significant, limiting possible conclusions based on photopeak shapes.…”
Section: Introductionmentioning
confidence: 99%
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“…At present, the non-platinic catalysts for oxygen reduction reaction (ORR) can be divided into two classes: (1) the Ru or Pd-based catalysts [3][4][5]; (2) and derivatives of transition metal macrocyclic compounds [6][7][8][9][10][11][12][13][14]. Iron or cobalt complexes of porphyrins, phthalocyanine or tetraazannulene have been reported as showing considerable promise.…”
Section: Introductionmentioning
confidence: 99%
“…Com o objetivo de otimizar a ação catalítica dos eletrodos através da síntese de novos materiais, métodos alternativos de preparação de catalisadores são encontrados na literatura, tais como a pirólise de acetato de ferro II adsorvido em 3, 4, 9, 10-perylenetetracarboxylic dianhydride em Ar:H 2 :NH 3 [8], ou a preparação de materiais alternativos como os macrociclos de metais suportados em carbono [9] e também ligas binárias e ternárias de Pt com metais de transição [10][11][12].…”
Section: Introductionunclassified