2020
DOI: 10.1016/j.jelechem.2020.114139
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Revisiting glycerol electrooxidation by applying derivative voltammetry: From well-ordered bulk Pt to bimetallic nanoparticles

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Cited by 15 publications
(10 citation statements)
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“…The main difference is the cathodic peak, which is not well-defined for CP, whereas it is centered at ∼0.0 V on GO/CP. We also investigated the E onset by derivative voltammetry (d 2 E/dt 2 ), 39,40 which is precisely 0.83 V vs Ag/AgCl for both catalysts (Figure 9C), suggesting no detectable displacement of the onset potential. Moreover, since E onset for glycerol electrooxidation in KOH is −0.605 V vs Ag/AgCl (−0.65 V vs SCE 7 ), the theoretical OCV would be 1.435 V, which is close to the experimental values at fuel cell conditions.…”
Section: 2mentioning
confidence: 99%
“…The main difference is the cathodic peak, which is not well-defined for CP, whereas it is centered at ∼0.0 V on GO/CP. We also investigated the E onset by derivative voltammetry (d 2 E/dt 2 ), 39,40 which is precisely 0.83 V vs Ag/AgCl for both catalysts (Figure 9C), suggesting no detectable displacement of the onset potential. Moreover, since E onset for glycerol electrooxidation in KOH is −0.605 V vs Ag/AgCl (−0.65 V vs SCE 7 ), the theoretical OCV would be 1.435 V, which is close to the experimental values at fuel cell conditions.…”
Section: 2mentioning
confidence: 99%
“…One of the main electrocatalytic parameters is the onset potential ( E onset ), which is related to the energy required to start the surface reaction. E onset can be precisely obtained by the derivative voltammogram by simply applying d 2 E /d t 2 to the existing voltammogram .…”
Section: Resultsmentioning
confidence: 99%
“…E onset can be precisely obtained by the derivative voltammogram 46 by simply applying d 2 E/dt 2 to the existing voltammogram. 47 E onset is determined at the intercept of f(x) = 0 with the derivative voltammogram. 47 Moreover, d 2 E/dt 2 highlights the features of the electrochemical behavior.…”
Section: Resultsmentioning
confidence: 99%
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“…Nas células a combustível a álcool direto (DAFCs) as reações de oxidação e redução são catalisadas por nanopartículas metálicas, suportadas em carbono denominados eletrocatalisadores, fundamentais para que as reações ocorram com velocidades adequadas. As nanopartículas mais utilizadas neste processo são os metais nobres de Pt e Pd, eficientes na reação de oxidação de CO e hidrocarbonetos [24,25].…”
Section: Introductionunclassified