Au@PdAg core-shell nanotubes as advanced electrocatalysts for methanol electrooxidation in alkaline media.

ABSTRACT: Developing active and cost-effective electrocatalysts for methanol electrooxidation is crucial to the commercialization of direct methanol fuel cells (DMFCs). In this study, Au@PdAg core-shell nanotubes are synthesized in an aqueous solution by sequential galvanic displacement between Ag nanowires and AuCl₄ ^- and PdCl₄ ^2-. High-resolution transmission electron microscopy studies demonstrate that the obtained Au@PdAg nanotubes consist of a Au-rich interior that is encapsulated with a three-dimensionally dendritic, porous PdAg alloy shell, forming a core-sheath nanostructure. Electrochemical studies indicate that the as-prepared Au@PdAg nanotubes exhibit apparent electrocatalytic activity and stability towards methanol electrooxidation in alkaline

SUBMITTER: Yang W 

PROVIDER: S-EPMC9059505 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature