Heterogeneous Copper – Palladium Binary Interface Boosts Stability and Mass Activity of Atomic Pt Clusters in Oxygen Reduction Reaction
Cheng-Yang Lin2*, Tsan-Yao Chen1
1Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan
2Institute of Electronic Engineering, National Tsing Hua University, Hsinchu, Taiwan
* presenting author:CHENG YANG LIN, email:ntnu499412022@gmail.com
Pt are well known for their unique electrocatalytic properties but it’s expensive. Target of this study is to design a Pt complexes nanoccatalyst (NC) has a superior oxygen reduction reaction (ORR) properties. The CuPdPt NC is synthesized with ternary metallic, copper, palladium and Platinum by using wet chemical reduction method. Configuration of NC is a Cu@Pd core and atomic Pt clusters (~9 wt%) in the top (Cu@Pd/Pt). Further, a nanocrystal is prepared in the presence of acid treated carbon nanotube. At 0.85 volt (vs. RHE), the mass activity (MA) of Cu@Pd/Pt NC which is 5.2-times higher than Pt catalysts of commercial retained at ~93% in accelerated degradation test (ADT) for 40000 cycles. In atomic and electronic structure analyses successfully evidence that CuPdPt NC has such exclusive largely stability owing to electron localization at Pt cluster in heterogeneous interfaces of Cu-Pd core. Finally, robust ternary NC shows outstanding MA, superior chemical durability and ORR properties than commercial Pt NC.

Keywords: oxygen reduction reaction, mass activity, nanoccatalyst