Ni2P nanoparticle films supported on a Ti plate as an efficient hydrogen evolution cathode.

In this communication, we report a two-step strategy for low-temperature construction of Ni2P nanoparticle films supported on a Ti plate (Ni2P/Ti). When used as an integrated hydrogen evolution cathode, the Ni2P/Ti electrode exhibits remarkable catalytic activity, superior stability and nearly 100% Faradaic efficiency in acidic solutions, and it needs overpotentials of 138 and 188 mV to afford current densities of 20 and 100 mA cm(-2), respectively.

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