Hierarchical Pt-In Nanowires for Efficient Methanol Oxidation Electrocatalysis.

ABSTRACT: Direct methanol fuel cells (DMFC) have attracted increasing research interest recently; however, their output performance is severely hindered by the sluggish kinetics of the methanol oxidation reaction (MOR) at the anode. Herein, unique hierarchical Pt-In NWs with uneven surface and abundant high-index facets are developed as efficient MOR electrocatalysts in acidic electrolytes. The developed hierarchical Pt₈₉In₁₁ NWs exhibit high MOR mass activity and specific activity of 1.42 A mg_Pt^-1 and 6.2 mA cm^-2, which are 5.2 and 14.4 times those of Pt/C, respectively, outperforming most of the reported MORs. In chronoamperometry tests, the hierarchical Pt₈₉In₁₁ NWs demonstrate a longer half-life time than Pt/C, suggesti

SUBMITTER: Lu Z 

PROVIDER: S-EPMC9920629 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature