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Merck

Molybdenum, molybdenum oxides, and their electrochemistry.

ChemSusChem (2012-06-14)
Viswanathan S Saji, Chi-Woo Lee
ABSTRACT

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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Molybdenum, powder, 1-5 μm, ≥99.9% trace metals basis
Sigma-Aldrich
Molybdenum, powder, <150 μm, 99.99% trace metals basis
Sigma-Aldrich
Molybdenum, nanopowder, <100 nm particle size (TEM), 99.8% trace metals basis
Sigma-Aldrich
Molybdenum, foil, thickness 1.0 mm, ≥99.9% trace metals basis
Sigma-Aldrich
Molybdenum, powder, 10 μm, ≥99.95% trace metals basis
Sigma-Aldrich
Molybdenum, powder, <150 μm, 99.9% trace metals basis
Sigma-Aldrich
Molybdenum, foil, thickness 0.025 mm, ≥99.9% trace metals basis
Sigma-Aldrich
Molybdenum, foil, thickness 0.1 mm, ≥99.9% trace metals basis
Molybdenum, foil, 5m coil, thickness 0.04mm, coil width 0.7mm, annealed, 99.9%
Molybdenum, foil, 1m coil, thickness 0.025mm, annealed, 99.9%
Molybdenum, foil, 15mm disks, thickness 0.020mm, annealed, 99.9%
Molybdenum, foil, 6mm disks, thickness 0.007mm, 99.9%
Molybdenum, foil, 50mm disks, thickness 0.008mm, 99.9%
Molybdenum, foil, 15mm disks, thickness 0.015mm, annealed, 99.9%
Molybdenum, foil, 6mm disks, thickness 0.075mm, annealed, 99.9%
Molybdenum, foil, 1m coil, thickness 0.04mm, coil width 0.7mm, annealed, 99.9%
Molybdenum, foil, 6mm disks, thickness 0.0125mm, 99.9%
Molybdenum, foil, 15mm disks, thickness 0.025mm, annealed, 99.9%
Molybdenum, foil, 50mm disks, thickness 0.125mm, annealed, 99.9%
Molybdenum, foil, 25mm disks, thickness 0.025mm, annealed, 99.9%
Molybdenum, foil, 50mm disks, thickness 0.01mm, 99.9%
Molybdenum, foil, 50mm disks, thickness 0.30mm, annealed, 99.9%
Molybdenum, foil, 4mm disks, thickness 0.125mm, annealed, 99.9%
Molybdenum, foil, 6mm disks, thickness 0.015mm, annealed, 99.9%
Molybdenum, foil, 6mm disks, thickness 0.15mm, annealed, 99.9%
Molybdenum, foil, 15mm disks, thickness 0.75mm, annealed, 99.9%
Molybdenum, foil, 25mm disks, thickness 0.020mm, annealed, 99.9%
Molybdenum, foil, 4mm disks, thickness 0.15mm, annealed, 99.9%
Molybdenum, foil, light tested, 50x50mm, thickness 0.009mm, 99.9%
Molybdenum, rod, 200mm, diameter 25mm, centerless ground, 99.9%