PtSn Intermetallic, Core–Shell, and Alloy Nanoparticles as CO‐Tolerant Electrocatalysts for H2 Oxidation

More order, more tolerance: PtSn intermetallic and alloy nanoparticles (NPs) were prepared by the co-reduction of [Pt(acac)2] (acac=acetylacetonate) and SnCl4. The intermetallic NPs can convert to [email protected] core–shell NPs after potential cycling in CO-saturated H2SO4 solution. Electrochemical studies demonstrated the core–shell and intermetallic electrocatalysts had substantially higher CO tolerance than PtSn alloy, PtRu alloy, and monometallic Pt. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.