PtRu mesoporous nanospheres as electrocatalysts with enhanced performance for oxidation of methanol.

ABSTRACT: Composition and morphology are crucial factors in the design of Pt-based catalysts with high performance, particularly in direct methanol fuel cells (DMFCs). Herein, PtRu mesoporous nanospheres (PtRu MNs) with tunable compositions were synthesized via a facile method and then deposited on a carbon support to act as electrocatalyst materials for the methanol oxidation reaction (MOR). Superior catalytic activity, better catalytic stability, and good tolerance to CO were achieved by the optimum PtRu (2 : 1) MNs/C catalyst compared with Pt MNs/C. The mass activity on PtRu (2 : 1) MNs/C reached 111.77 mA mg_Pt ^-1, which was approximately 6.45-fold higher than that of Pt MNs/C (17.33 mA mg_Pt ^-1). Meanwhile, PtRu (2 : 1) MNs/C retained much more c

SUBMITTER: Guo J 

PROVIDER: S-EPMC11334057 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature