Mesoporous Co-N-C Supported L1₀-PtCo Alloy Enables Fast Mass Transport for Proton Exchange Membrane Fuel Cells.

ABSTRACT: Oxygen reduction reaction (ORR) performance of platinum can be improved through alloying transition metals, with L1₀-PtCo emerging as a standout option due to its balanced catalytic performance, durability, and manufacturability. However, traditional carbon supports often fail to stabilize nanoparticles, leading to performance degradation. This study introduces a mesoporous Co-N-C supported ordered L1₀-PtCo catalyst to overcome the above limitations. The CoN₄ sites in the mesoporous Co-N-C (MS-CoNC) support create a strong synergy with L1₀-PtCo clusters, preventing nanoparticle aggregation during high-temperature synthesis. X-ray absorption spectroscopy reveals a unique shortened Pt-Pt bond length in L1₀-PtCo/MS-CoNC, which contributes

SUBMITTER: Nie Y 

PROVIDER: S-EPMC12530033 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature