Hydrogen is a clean and environment-friendly fuel. The current predominant industrial technique for hydrogen production is steam reforming which depends on fossil fuel that is on its way of depletion and produces the greenhouse gas as a byproduct. On the other hand, the clean substitute, electrolysis takes only 4% of hydrogen production, because of the high cost of the noble metal electrodes used. Transition metals electrodes and their phosphides showed good comparable activity along with low-cost, high durability, abundancy and ease of fabrication. Recently, we have synthesized Ni-Mo alloy NPs and studied their characteristics as high efficiency, durable water splitting catalyst. Upon phosphidation, the phosphide changes the catalyst surface, creating localized negative charges that attract protons that facilitates their coupling for hydrogen production. Herein, we have used colloidal synthesis to produce two distinct crystal structures of Ni-Mo-P alloy NPs with a varying Mo composition (0-18%), and morphology at moderately high temperatures. In addition, electrocatalytic activity and durability were investigated by recording overpotentials, Tafel slopes and chronoamperometry using linear sweep voltammetry (LSV). The effect of synthetic and physical parameters on electrocatalytic activity and efficiency of hydrogen reduction reactions will be explained.

Efficiency of Ni-Mo-P nanoalloys catalysts with various compositions and crystal structures towards hydrogen evolution reactions

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.