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Arce-Estrada, E.M.; López-Hirata, Vı́ctor M.; Martinez-Lopez, Lobsang; Dorantes-Rosales, Héctor J.; oz, Maribel L. Saucedo-Muń; Hernández-Santiago, Felipe

doi:10.1023/a:1021105330821

Cited by 13 publications

(5 citation statements)

References 5 publications

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“…The results for this material are found in the box highlighted by a red border (30 bands removed). Several reports indicate that trimetallic composites of Ni–Mo–Co may outperform Ni–Mo or the monometallics. , In addition, Co–Mo has been reported to require a lower overpotential for the HER than Ni–Mo . In our case, however, the bimetallic Ni–Mo catalysts were the most active species with generally decreasing performance as the percentage of Ni was lowered.…”

Section: Resultscontrasting

confidence: 45%

“…Sixty-six of the electrodes were modified with a mono-, bi-, or trimetallic mixture of Ni−Mo−M, where M = Co, Fe, or W, and the remaining electrodes were either modified with Pt or left as naked FTO to serve as controls. 51,52 In addition, Co−Mo has been reported to require a lower overpotential for the HER than Ni− Mo. 45 In our case, however, the bimetallic Ni−Mo catalysts were the most active species with generally decreasing performance as the percentage of Ni was lowered.…”

Section: ■ Results and Discussionmentioning

confidence: 50%

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Evaluating Electrocatalysts for the Hydrogen Evolution Reaction Using Bipolar Electrode Arrays: Bi- and Trimetallic Combinations of Co, Fe, Ni, Mo, and W

et al. 2014

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Here, we report the development of a parallel electrocatalyst screening platform for the hydrogen evolution reaction (HER) using bipolar electrodes (BPEs). Electrocatalyst candidates are subjected to screening in a N 2 -purged bipolar electrochemical cell where a pair of driving electrodes produce an electric field in the electrolyte solution. The HER occurring at the BPE cathodes is electrically coupled to the electrodissolution of an array of Cr microbands present at the BPE anodes. The readout of this device is simple, where the species that dissolve the most Cr microbands are identified as the most promising electrocatalyst candidates for further evaluation. We demonstrate the utility of this technique by comparing several bi-and trimetallic systems involving Co, Fe, Ni, Mo, and W, which are compared directly with pure Pt. Of all the compositions tested, Ni 8 −Mo 2 is demonstrated to be the most active for the HER in a neutral electrolyte solution.

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Section: Resultscontrasting

confidence: 45%

Section: ■ Results and Discussionmentioning

confidence: 50%

Evaluating Electrocatalysts for the Hydrogen Evolution Reaction Using Bipolar Electrode Arrays: Bi- and Trimetallic Combinations of Co, Fe, Ni, Mo, and W

et al. 2014

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“…It is difficult to assign a specific crystalline phase based on the appearance of a single diffraction peak around 2h 44 o . According to the literature data, this peak could correspond with an fcc (Co-Ni) solid solution, [31] with a (002) plane of e-Co, but also with a (002) plane of Co 3 Mo compound. [32] IV.…”

Section: Resultsmentioning

confidence: 86%

Electrodeposition of Co-Ni-MoxOy Powders: Part I. The Influence of Deposition Conditions on Powder Composition and Morphology

Stevanović

Stajić-Trošić

Ćosović

et al. 2009

Metall Mater Trans B

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The Co-Ni-Mo x O y powders were obtained electrochemically at a constant current density from ammonia electrolyte. Ni and Co were anomalously deposited, inducing Mo deposition, which cannot be deposited separately from aqueous solutions. The obtained Co-Ni-Mo x O y powders were investigated by energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and scanning electon microscope (SEM) methods. Based on the obtained experimental results, it was concluded that the particle size of deposited powders is influenced by the chemical composition of the electrolyte and current density imposed. XRD results suggested that obtained powders were of amorphous structure, although a Co 3 Mo compound can be formed if certain experimental conditions are applied.

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“…Since the OER normally takes place on metal oxides or hydroxides, researchers have studied Ni oxides and hydroxides produced by various chemical, thermal and electrochemical methods. However, only a few works have been reported for these materials produced by mechanical alloying (14)(15)(16)(17). Some cobalt and molybdenum alloys have also been considered to be good electrocatalysts for the OER (18).…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Activity of Nano-Crystalline Ni-Co-Mo-Fe Alloys on the Oxygen Evolution Reaction (OER)

Dominguez¹,

Plata

Torres‐Huerta

et al. 2006

ECS Trans.

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The electrocatalytic behavior of nanocrystalline Co 30 Ni 70 , Co 40 Mo 60 , Ni 40 Mo 60 , Co 15 Ni 30 Mo 55 , Fe 10 Co 35 Ni 55 and Co 15 Fe 30 Ni 55 mol-% alloys on the oxygen evolution reaction [OER] in a 30 wt-% KOH aqueous solution at 298, 323 and 343 K has been assessed in this work. Appreciable currents for oxygen evolution reactions were measured at Ni-Co-Mo-Fe electrodes produce by this technique. It was also found that iron increased the electrocatalytic activity for oxygen evolution reaction, but it was not as good as obtained on hydrogen evolution reaction [HER]. Tafel plots of preoxidized and prolonged cycled Co 30 Ni 70 , Co 40 Mo 60 , Ni 40 Mo 60 , Co 15 Ni 30 Mo 55 , Fe 10 Co 35 Ni 55 and Co 15 Fe 30 Ni 55 crystalline electrodes were very different, which might be related to changes in the surface enrichment of one or two of the alloy constituents. The electrocatalytic effects Mo seem to be more important on the OER at high temperatures than those showed previously for HER. Nickel and Molybdenum rich alloys showed particularly high activity towards the OER in comparison with their nanocrystalline counterparts.

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Cited by 13 publications

References 5 publications

Evaluating Electrocatalysts for the Hydrogen Evolution Reaction Using Bipolar Electrode Arrays: Bi- and Trimetallic Combinations of Co, Fe, Ni, Mo, and W

Evaluating Electrocatalysts for the Hydrogen Evolution Reaction Using Bipolar Electrode Arrays: Bi- and Trimetallic Combinations of Co, Fe, Ni, Mo, and W

Electrodeposition of Co-Ni-MoxOy Powders: Part I. The Influence of Deposition Conditions on Powder Composition and Morphology

Electrocatalytic Activity of Nano-Crystalline Ni-Co-Mo-Fe Alloys on the Oxygen Evolution Reaction (OER)

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