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Nanostructures; chemical synthesis; electrochemical measurements.

Cu–Fe–Ni ternary alloys (size ∼55–80 nm) with varying compositions viz. CuFeNi (A1), CuFe2Ni (A2) and CuFeNi2 (A3) were successfully synthesized using microemulsion. It is to be noted that synthesis of nanocrystallineternary alloys with precise composition is a big challenge which can be overcome by choosing an appropriate microemulsion system. High electrocatalytic activity towards HER in alkaline medium was achieved by the formation of alloys of metals with low and high binding energies. A high value of current density (228 mA cm$^2$) at an overpotential of 545 mV was obtained for CuFeNi (A1), which is significantly high as compared to the previously reported Ni$_{59}$Cu$_{41}$ alloy catalyst.

SOUMEN SAHA¹ SONALIKA VAIDYA² KANDALAM V RAMANUJACHARY³ SAMUEL E LOFLAND⁴ ASHOK K GANGULI^{1 2}

1. Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
2. Institute of Nano Science and Technology, Mohali, Punjab 160062, India
3. Department of Chemistry and Biochemistry, Rowan University, New Jersey 08028, USA
4. Department of Physics and Astronomy, Rowan University, New Jersey 08028, USA

Published

15 April 2016

Manuscript received

23 May 2015

Accepted

3 December 2015