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Plasma enabled non-thermal phosphorization for nickel phosphide hydrogen evolution catalysts
- Wu, Xiuqi, Guo, Yanru, Wang, Teng, Sun, Bingxue, Liu, Zhiliang, Wu, Yong, Zhang, Shaojun, Zheng, Jie, Li, Xingguo
- Chemical communications 2019 v.55 no.29 pp. 4202-4205
- catalysts, chemical reactions, dissociation, electrodes, foams, hydrogen, hydrogen production, nanosheets, nickel, nickel oxide, phosphides, phosphorus, strength (mechanics), temperature, toxicity
- While nickel phosphide is a highly attractive catalyst for the hydrogen evolution reaction, its preparation requires either high temperature or the use of highly toxic PH₃ directly or indirectly. Herein, we demonstrate that H₂ plasma activated red phosphorus enables the synthesis of self-supported Ni₂P nanosheet (Ni₂P/NF) arrays on commercial nickel foam from a NiO/NF precursor at only 250 °C. Highly reactive atomic H in the plasma induces dissociation of the P₄ molecules, yielding an acid stable electrode with excellent hydrogen evolution activity and good mechanical strength.