Study of molybdenum electrodes for hydrogen evolution reaction

Padilha, Janine Carvalho; Martini, Emilse Maria Agostini; Brum, Cauã; Souza, Michèle Oberson de; Souza, Roberto Fernando de

doi:10.1016/j.jpowsour.2009.04.018

Cited by 14 publications

(7 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[14] The performance of molybdenum is reported to be better than platinum as electrodes for hydrogen production by water electrolysis. [15] Thin film molybdenum and molybdenum oxides are particularly important for their applications in transistor flat panel displays, [16] integrated circuits, [17] CIS/CIGS, [18] and organic solar cells. [19] The use of molybdenum thin film (on soda-lime glass, stainless steel, or polymer substrate) for CIS/CIGS solar cells has been an active area of research for more than a decade.…”

Section: Introductionmentioning

confidence: 99%

Molybdenum, Molybdenum Oxides, and their Electrochemistry

2012

View full text Add to dashboard Cite

The electrochemical behaviors of molybdenum and its oxides, both in bulk and thin film dimensions, are critical because of their widespread applications in steels, electrocatalysts, electrochromic materials, batteries, sensors, and solar cells. An important area of current interest is electrodeposited CIGS-based solar cells where a molybdenum/glass electrode forms the back contact. Surprisingly, the basic electrochemistry of molybdenum and its oxides has not been reviewed with due attention. In this Review, we assess the scattered information. The potential and pH dependent active, passive, and transpassive behaviors of molybdenum in aqueous media are explained. The major surface oxide species observed, reversible redox transitions of the surface oxides, pseudocapacitance and catalytic reduction are discussed along with carefully conducted experimental results on a typical molybdenum glass back contact employed in CIGS-based solar cells. The applications of molybdenum oxides and the electrodeposition of molybdenum are briefly reviewed.

show abstract

Section: Introductionmentioning

confidence: 99%

Molybdenum, Molybdenum Oxides, and their Electrochemistry

2012

View full text Add to dashboard Cite

show abstract

“…Electrochemical studies of 'Mo/surface Mo oxides' are important because of its applications in alloys, electrocatalysis, electrochromics, gas sensors, supercapacitors, Li-ion batteries and CuIn(Ga)Se 2 solar cells. [1][2][3][4][5][6][7][8][9][10][11][12] The extremely thin Mo surface oxides determine many of the electrode's interfacial properties. [13][14][15] Two distinct characteristics of the electrochemistry of such systems are reversible redox transitions and pseudocapacitance.…”

mentioning

confidence: 99%

Reversible Redox Transition and Pseudocapacitance of Molybdenum/Surface Molybdenum Oxides

Saji

Lee

2012

J. Electrochem. Soc.

View full text Add to dashboard Cite

Redox transitions and superior pseudocapacitance are two typical characteristics in the electrochemical behavior of metallic Mo (with surface Mo oxides) and bulk Mo oxides; both of which were attributed to the participation of H+/cations. The effects of different electrolyte anions (Cl−, SO42− and ClO4−) on redox transition and pseudocapacitance of thin-film ‘Mo/Mo oxides’ electrodes were assessed in this work through DC and AC electrochemical experiments. Voltammetric peak potentials and currents and potential-dependent pseudocapacitance were strongly dependent on the electrolyte's anion. The variations were tested at different electrolyte pH levels and using different electrolyte cations (Li+, Na+ and K+). The results were correlated with those obtained using a Se4+ based electrolyte. The findings reported here are expected to aid the applicability of Mo and its oxides in electrocatalysis, electrodeposition, supercapacitor, display, corrosion control and solar cells.

show abstract

“…The selection of electrode materials is of significance to the accurate measurement and there are no specific research about it so far. Molybdenum 16 , platinum 17 , copper 18 , 19 and tungsten 10 – 13 were chosen as the electrode materials for experiment as they are the common electrode materials, and the spectral interference, plasma characteristic, delay time were studied to obtain optimal plasma observation state. Different size of quartz sands were also tested to investigate the size effect.…”

Section: Introductionmentioning

confidence: 99%

Optimizing critical parameters for the directly measurement of particle flow with PF-SIBS

Yao

Zhang

et al. 2018

Sci Rep

View full text Add to dashboard Cite

A novel measurement technology named as particle flow-spark induced breakdown spectroscopy (PF-SIBS) was reported for real-time measurement of solid materials. Critical measurement parameters of PF-SIBS were optimized and a set of fly ashes with different carbon content were measured for evaluation of measurement performance. Four electrode materials, tungsten, copper, molybdenum and platinum, were compared in the aspects of signal stability, line interference and electrode durability. Less line interference and better signal stability were obtained with W and Cu electrode, while W electrode has better durability. Quartz sand with diameters from 48 μm to 180 μm were tested to investigate the influence of particle size. As the particle diameter increased, the intensity of Si 288.16 nm line decreased while that of ambient air constituents increased. To reduce the particle effect, the sum intensity from sample and ambient air were introduced to correct. The RSD of line intensity between the five diameters were reduced from 67.30% to 16.59% with Cu electrodes and from 63.21% to 13.64% with W electrodes. With the optimal measurement parameters and correction, fly ash samples with different carbon content were tested and the correlation coefficients R2 of multivariate calibration achieved 0.987.

show abstract

Study of molybdenum electrodes for hydrogen evolution reaction

Cited by 14 publications

References 23 publications

Molybdenum, Molybdenum Oxides, and their Electrochemistry

Molybdenum, Molybdenum Oxides, and their Electrochemistry

Reversible Redox Transition and Pseudocapacitance of Molybdenum/Surface Molybdenum Oxides

Optimizing critical parameters for the directly measurement of particle flow with PF-SIBS

Contact Info

Product

Resources

About