Colloidal Au and Au-alloy catalysts for direct borohydride fuel cells: Electrocatalysis and fuel cell performance

Atwan, Mohammed H.; Macdonald, Charles L. B.; Northwood, Derek O.; Gyenge, Előd L.

doi:10.1016/j.jpowsour.2005.09.054

Cited by 188 publications

(120 citation statements)

References 12 publications

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“…Various gold-platinum nanoparticles synthesis methods have been already studied: Polyol (Senthil Kumar & Phani, 2009), sol-gel (Devarajan et al, 2005), water-in-oil microemulsion (Habrioux et al, 2007), electrodeposition (El Roustom et al, 2007) and Bönnemann (Atwan et al, 2006). Among all these methods, the water-in-oil microemulsion technique produces particles that exhibit high catalytic activity towards glucose electrooxidation (Habrioux et al, 2007).…”

Section: Synthesis Of Gold-platinum Nanoparticlesmentioning

confidence: 99%

Performances of Enzymatic Glucose/O2 Biofuel Cells

Habrioux¹,

Servat²,

Tingry³

et al. 2011

Biofuel's Engineering Process Technology

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Section: Synthesis Of Gold-platinum Nanoparticlesmentioning

confidence: 99%

Performances of Enzymatic Glucose/O2 Biofuel Cells

Habrioux¹,

Servat²,

Tingry³

et al. 2011

Biofuel's Engineering Process Technology

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“…[7][8][9][10] Borohydride and its oxidation mechanism has been studied in relation to direct borohydride fuel cells (DBFC). [11][12][13][14][15] In addition, this strong reducing agent is commonly utilized for chemical deposition of metal films. 16 Although anodic oxidation inhibition of borohydride on platinum electrodes by sulfur compounds dissolved in the electrolytes has been reported, 17 data regarding the inhibitory effect is not common.…”

Section: Introductionmentioning

confidence: 99%

Inhibitory Effect of Sulfur–containing Compounds on Anodic Oxidation of Borohydride

Mizuhashi

Cordonier

Sato³

et al. 2016

Electrochemistry

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Inhibitory effect of sulfur-containing compounds on anodic oxidation of borohydride was investigated. The linear sweep voltammetry technique revealed that sulfur compounds such as thiosulfate and sulfide inhibited anodic oxidation of borohydride not only on a platinum surface but also on a glassy carbon surface which had less catalytic activity of borohydride electro-oxidation. Through electrochemical impedance spectroscopy, it was confirmed the charge transfer resistance of borohydride oxidation at the electrode surface increased in the presence of sulfur compounds, but the capacitance of the electric double layer at the surface did not depend on sulfur compounds and their concentration. The degree of inhibition by each sulfur compound on the electro-oxidation of borohydride in the presence of electrodes and its spontaneous oxidation in the absence of electrodes was similar. Thus the sulfur compound inhibitive influence on borohydride oxidation occurred without adsorbing onto the surface of the electrode. The anodic oxidation of borohydride was suppressed to less than 1/10 of the exchange current in the case of thiosulfate and sulfide. Sulfur compounds inhibited anodic oxidation of hydrazine and dimethylaminoborane as well, while the effect of each sulfur compound varied from that of borohydride.

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“…[1][2][3][4] The DBFC is based on borohydride oxidation at the anode: Since borohydride is used as fuel, the development of low-cost, stable and highly active electrocatalysts toward borohydride oxidation is of considerable interest. It is well known that gold is an effective electrocatalyst for the oxidation of BH 4 − ions [5][6][7][8][9][10] indicating that the anodic oxidation of BH 4 − ions at the gold electrode proceeds through an eight-electron process according to Eq. 1, assuming that the reaction of hydrolysis does not occur.…”

mentioning

confidence: 99%

Investigation of Borohydride Oxidation on Graphene Supported Gold-Copper Nanocomposites

Tamašauskaitė–Tamašiūnaitė

Baronaitė

Stankevičienė

et al. 2014

J. Electrochem. Soc.

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In this study the AuCu/GR catalysts with different Au:Cu molar ratios were prepared by microwave heating of Au(III) and Cu(II) salts in ethylene glycol (EG) solutions at 150 • C for 30 min. It has been determined that the composition of AuCu/GR depends on pH of the reaction mixture. When the reaction mixture pH was 7.0, 10.1 and 12.2, the AuCu/GR catalysts with the Au:Cu molar ratios equal to 37:1, 1:13 and 1:32, respectively, were synthesized. The structure and composition of the prepared catalysts were examined by XRD and ICP-OES. The shape and size of catalyst particles were determined by TEM. It has been found that the graphene supported AuCu catalysts with the Au:Cu molar ratios equal to 1:13 and 1:32 show an enhanced electrocatalytic activity toward the oxidation of BH 4 − ions compared with those of the bare Au/GR and Cu/GR catalysts.

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Colloidal Au and Au-alloy catalysts for direct borohydride fuel cells: Electrocatalysis and fuel cell performance

Cited by 188 publications

References 12 publications

Performances of Enzymatic Glucose/O2 Biofuel Cells

Performances of Enzymatic Glucose/O2 Biofuel Cells

Inhibitory Effect of Sulfur–containing Compounds on Anodic Oxidation of Borohydride

Investigation of Borohydride Oxidation on Graphene Supported Gold-Copper Nanocomposites

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Colloidal Au and Au-alloy catalysts for direct borohydride fuel cells: Electrocatalysis and fuel cell performance

Cited by 188 publications

References 12 publications

Performances of Enzymatic Glucose/O2 Biofuel Cells

Performances of Enzymatic Glucose/O2 Biofuel Cells

Inhibitory Effect of Sulfur&ndash;containing Compounds on Anodic Oxidation of Borohydride

Investigation of Borohydride Oxidation on Graphene Supported Gold-Copper Nanocomposites

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Inhibitory Effect of Sulfur–containing Compounds on Anodic Oxidation of Borohydride