Preparation and characterization of low overvoltage transition metal alloy electrocatalysts for hydrogen evolution in alkaline solutions

Brown, David E.; Mahmood, M.N.; Man, Malcolm; Turner, Anne I.

doi:10.1016/0013-4686(84)85008-2

Cited by 228 publications

(141 citation statements)

References 12 publications

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“…3(b) [70]) but similar overpotentials for H 2 evolution were observed and the Tafel slopes were 40e60 mV. The papers by both Brown et al [44,45] and Schiller et al [71] confirm the outstanding performance of the NiMo alloys. Overpotentials are very low, w60 mV at 0.5 A cm À2 in 30% NaOH at 343 K and this performance is maintained over many thousand hours even when the regime includes switching out the cell and variation of the current load.…”

Section: à2supporting

confidence: 55%

“…The 1980s again saw intensive studies of NiMo electrocatalyst layers [24] and surfaces were prepared by thermal decomposition followed by hydrogen reduction [34,44,45], electrodeposition of NiMo layers [65e67] sometimes as a NiMoCd alloy as this gave a high surface area [67], ball milling of Ni and Mo nanopowders to form alloy particles followed by pressing to give an electrode [68,69] and low pressure plasma spraying of NiAlMo alloy powders followed by leaching [70e72]. The papers by Brown et al [44,45] suggest that their alloy coating prepared by thermal decomposition and reduction contained 13% Mo. The coating had a face centred cubic structure with random replacement of Ni atoms by Mo atoms where the mean lattice parameter was 0.358 nm compared to 0.352 nm for pure nickel.…”

Section: à2mentioning

confidence: 99%

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Prospects for alkaline zero gap water electrolysers for hydrogen production

Pletcher

2011

International Journal of Hydrogen Energy

304

193

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Section: à2supporting

confidence: 55%

Section: à2mentioning

confidence: 99%

Prospects for alkaline zero gap water electrolysers for hydrogen production

Pletcher

2011

International Journal of Hydrogen Energy

304

193

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“…34,35 When used as a catalyst on Si photoelectrodes, the maximum acceptable thickness (and hence roughness) of Ni-Mo is limited by the requirement of minimizing absorption of the incoming light. The observed order of catalyst activity on Si cathodes, Ni < Ni-Mo < Pt (provided that the Pt was not deposited by a method that gave rise to resistive behavior), is thus in accord with expectations.…”

Section: B Relative Electrocatalytic Activitiesmentioning

confidence: 99%

Evaluation of Pt, Ni, and Ni–Mo electrocatalysts for hydrogen evolution on crystalline Si electrodes

McKone

Warren

Bierman

et al. 2011

Energy Environ. Sci.

462

382

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The dark electrocatalytic and light photocathodic hydrogen evolution properties of Ni, Ni-Mo alloys, and Pt on Si electrodes have been measured, to assess the viability of earth-abundant electrocatalysts for integrated, semiconductor coupled fuel formation. In the dark, the activities of these catalysts deposited on degenerately doped p + -Si electrodes increased in the order Ni < Ni-Mo # Pt. Ni-Mo deposited on degenerately doped Si microwires exhibited activity that was very similar to that of Pt deposited by metal evaporation on planar Si electrodes. Under 100 mW cm À2 of Air Mass 1.5 solar simulation, the energy conversion efficiencies of p-type Si/catalyst photoelectrodes ranged from 0.2-1%, and increased in the order Ni z Ni-Mo < Pt, due to somewhat lower photovoltages and photocurrents for p-Si/Ni-Mo relative to p-Si/Ni and p-Si/Pt photoelectrodes. Deposition of the catalysts onto microwire arrays resulted in higher apparent catalytic activities and similar photoelectrode efficiencies than were observed on planar p-Si photocathodes, despite lower light absorption by p-Si in the microwire structures.

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“…As a result, attention has turned towards non-noble catalysts, which are readily available and inexpensive. Nickel alloys with additives such as Fe, Cr, and Mo are known to have a high electrocatalytic activity for the hydrogen evolution reaction (HER) and are low in cost [14].…”

Section: Introductionmentioning

confidence: 99%