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An alloying element of Sn-1.0Ag-based solder alloy can provide a great opportunity to improve their solder properties and increase its capacity for corrosion resistance. We have developed Sn-1.0Ag-xCe solder alloys consisting of a range of cerium contents from 0 to 0.5 wt% in the production of the refinement and continuation of the precipitates, as well as the reduction in grain size of the alloy microstructures. An increase of cerium addition supported on corrosion resistance exhibited relatively improved pitting potential, film and charge transfer resistances which particularly promoted the formation of passive film, resulting in an improvement of pitting resistance.

Flower-like molybdenum diselenide (MoSe2) nanoflakes (NF) were prepared by a one-pot hydrothermal method and the samples were characterized by using various analytical techniques. Powder X-ray crystallography (XRD) has confirmed the hexagonal crystal phase of the MoSe2 and the SEM images have shown clear flower-like structures of MoSe2 NF. The prepared MoSe2 NF and Pt assisted MoSe2 NF catalysts were evaluated for the methanol oxidation reaction (MOR) and photocatalytic hydrogen evolution. The electrocatalytic activity of platinum (Pt) supported MoSe2 NF was higher than that of bare MoSe2 NF, owing to redox characteristics of the Pt material. The photocatalytic hydrogen evolution test was performed under different range of light irradiations. The detailed catalyst stability and durability have been examined using recycling tests and 2400 s of chronoamperometry measurements.