A Janus Nickel Cobalt Phosphide Catalyst for High-efficiency Neutral-pH Water Splitting.

A Janus Nickel Cobalt Phosphide Catalyst for High-efficiency Neutral-pH Water Splitting. Angew Chem Int Ed Engl. 2018 Oct 03;: Authors: Yu SH, Wu R, Xiao B, Gao Q, Zheng Y, Zheng X, Zhu J, Gao MR Abstract Transition metal phosphides have demonstrated great interest as catalysts to drive the hydrogen evolution reaction (HER), but their use as bifunctional catalytic electrodes that enable efficient neutral-pH water splitting has rarely been achieved. Herein, we report the synthesis of ternary Ni0.1Co0.9P porous nanosheets onto conductive carbon fiber paper that can efficiently and robustly catalyze both the HER and water oxidation in 1 M phosphate buffer (PBS; pH 7) electrolyte under ambient conditions. A water electrolysis cell comprising such Ni0.1Co0.9P electrodes demonstrates remarkable activity and stability for the electrochemical splitting of neutral-pH water. We attribute this outstanding performance to the new ternary Ni0.1Co0.9P structure with porous surfaces and favorable electronic states resulting from the synergistic interplay between nickel and cobalt. Ternary metal phosphides hold promise as efficient and low-cost catalysts for neutral-pH water splitting devices. PMID: 30281194 [PubMed - as supplied by publisher]
Source: Angewandte Chemie - Category: Chemistry Authors: Tags: Angew Chem Int Ed Engl Source Type: research