PdAuCu Nanobranch as Self-Repairing Electrocatalyst for Oxygen Reduction Reaction.
During start-up and shut-down operations of fuel cells, high potential is inevitably experienced at cathode, which leads to the deterioration of the oxygen reduction electrocatalyst. The design of catalysts that can repair themselves under severe conditions has been identified as a primary challenge for fuel cells. Herein, self-supported PdAuCu branched nanostructure is synthesized by a hydrothermal method. By smartly utilizing the high-potential treatment, the activity of PdAuCu is significantly enhanced owing to the synergistic effect between the Pd and CuIIgenerated by such treatment. Moreover, the high activity of PdAuCu can be well maintained by repeating the high-potential treatment. We hence propose this catalyst as a "self-repairing" catalyst in a broad sense.
Soochow Institute for Energy and Materials Innovations, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano science and Technology, Soochow University, Suzhou, Jiangsu, 215006, P.R. China.
Hongyu
H
Gong
Soochow Institute for Energy and Materials Innovations, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano science and Technology, Soochow University, Suzhou, Jiangsu, 215006, P.R. China.
Xuecheng
X
Cao
Beijing Key Laboratory for Green Catalysis and Separation, School of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, P.R. China.
Fan
F
Li
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China.
Yue
Y
Gong
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P.R. China.
Lin
L
Gu
Soochow Institute for Energy and Materials Innovations, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano science and Technology, Soochow University, Suzhou, Jiangsu, 215006, P.R. China.|IFW Dresden, Helmholtz Strasse 20, 01069, Dresden, Germany.
Rafael Gregorio
RG
Mendes
Soochow Institute for Energy and Materials Innovations, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano science and Technology, Soochow University, Suzhou, Jiangsu, 215006, P.R. China.|IFW Dresden, Helmholtz Strasse 20, 01069, Dresden, Germany.|Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, 41-819, Poland.
Mark H
MH
Rummeli
Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany.
Peter
P
Strasser
Soochow Institute for Energy and Materials Innovations, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano science and Technology, Soochow University, Suzhou, Jiangsu, 215006, P.R. China.
Ruizhi
R
Yang
D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D004563:Electrochemistry; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*
D010165:Palladium; D006046:Gold; D003300:Copper; D010100:Oxygen
electrocatalyst; oxygen reduction reaction; palladium; self-repair; synergistic effect