High-Performance Rh2P Electrocatalyst for Efficient Water Splitting.
The search for active, stable, and cost-efficient electrocatalysts for hydrogen production via water splitting could make a substantial impact on energy technologies that do not rely on fossil fuels. Here we report the synthesis of rhodium phosphide electrocatalyst with low metal loading in the form of nanocubes (NCs) dispersed in high-surface-area carbon (Rh2P/C) by a facile solvo-thermal approach. The Rh2P/C NCs exhibit remarkable performance for hydrogen evolution reaction and oxygen evolution reaction compared to Rh/C and Pt/C catalysts. The atomic structure of the Rh2P NCs was directly observed by annular dark-field scanning transmission electron microscopy, which revealed a phosphorus-rich outermost atomic layer. Combined experimental and computational studies suggest that surface phosphorus plays a crucial role in determining the robust catalyst properties.
Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University , Beijing 100084, China.|Chemistry Research Laboratory, Department of Chemistry, University of Oxford , 12 Mansfield Road, Oxford OX1 3TA, U.K.
Haohong
0000-0002-9241-0984
H
Duan
Materials Science Divisions, Argonne National Laboratory , Lemont, Illinois 60439, United States.
Dongguo
D
Li
Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University , Beijing 100084, China.
Yan
Y
Tang
Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States.
Yang
Y
He
Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University , Beijing 100084, China.
Shufang
S
Ji
Materials Science Divisions, Argonne National Laboratory , Lemont, Illinois 60439, United States.
Rongyue
R
Wang
Materials Science Divisions, Argonne National Laboratory , Lemont, Illinois 60439, United States.
Haifeng
H
Lv
Materials Science Divisions, Argonne National Laboratory , Lemont, Illinois 60439, United States.
Pietro P
PP
Lopes
Materials Science Divisions, Argonne National Laboratory , Lemont, Illinois 60439, United States.
Arvydas P
AP
Paulikas
Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University , Beijing 100084, China.
Haoyi
H
Li
Department of Mechanical Engineering and Materials Science, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States.
Scott X
SX
Mao
Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Richland, Washington 99352, United States.
Chongmin
C
Wang
Materials Science Divisions, Argonne National Laboratory , Lemont, Illinois 60439, United States.
Nenad M
NM
Markovic
Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University , Beijing 100084, China.
Jun
0000-0002-8456-3980
J
Li
Materials Science Divisions, Argonne National Laboratory , Lemont, Illinois 60439, United States.
Vojislav R
VR
Stamenkovic
Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University , Beijing 100084, China.
Yadong
0000-0003-1544-1127
Y
Li