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Published on: April 27, 2018
H2O2-scavenging intermetallic Pt5Ce/C as a highly active and durable oxygen reduction electrocatalyst
Ho Young Kim1, Eunji Eom2, Sangwon Kim3
1Department of Chemistry and Energy Engineering, Sangmyung University Seoul 03016 Republic of Korea.
None:
Here we report an intermetallic Pt5Ce/C oxygen reduction catalyst with intrinsic antioxidant functionality. Under electrochemical conditions, Pt5Ce/C forms Pt-skin surfaces. Subsurface Ce atoms electronically tune Pt-skin to promote H2O2-scavenging, achieving a two-fold faster reaction rate than antioxidant-coupled catalysts. Pt5Ce/C thus delivers excellent catalytic activity and durability for oxygen reduction reaction.
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