TY - JOUR
T1 - Tailoring the electrochemical hydrogen evolution activity of Cu3P through oxophilic surface modification
AU - Vineesh, Thaze Veetil
AU - Yarmiayev, Valeria
AU - Zitoun, David
N1 - Publisher Copyright:
© 2020 The Authors
PY - 2020/4
Y1 - 2020/4
N2 - The hydrogen evolution reaction in alkaline medium can be promoted by the modification of platinum group metal with oxophilic metals. Herein, an earth abundant metal was first converted to copper phosphide Cu3P and the latter was electrochemically activated by a short and simple procedure to yield an oxidized electroactive surface. Compared with the pristine Cu3P catalyst, the electrochemical activated Cu3P catalyst exhibits an HER overpotential of 155 mV at 10 mA/cm2 (90 mV decrease from Cu3P catalyst) in alkaline medium with a stability over 24 h). XRD, XPS and EDS reveal that the oxidation occurs only on the surface of Cu3P which shows the presence of both copper phosphide and oxide species.
AB - The hydrogen evolution reaction in alkaline medium can be promoted by the modification of platinum group metal with oxophilic metals. Herein, an earth abundant metal was first converted to copper phosphide Cu3P and the latter was electrochemically activated by a short and simple procedure to yield an oxidized electroactive surface. Compared with the pristine Cu3P catalyst, the electrochemical activated Cu3P catalyst exhibits an HER overpotential of 155 mV at 10 mA/cm2 (90 mV decrease from Cu3P catalyst) in alkaline medium with a stability over 24 h). XRD, XPS and EDS reveal that the oxidation occurs only on the surface of Cu3P which shows the presence of both copper phosphide and oxide species.
UR - http://www.scopus.com/inward/record.url?scp=85080127271&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2020.106691
DO - 10.1016/j.elecom.2020.106691
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AN - SCOPUS:85080127271
SN - 1388-2481
VL - 113
JO - Electrochemistry Communications
JF - Electrochemistry Communications
M1 - 106691
ER -