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• W2903520973 abstract "Manipulating the chemical reactivity of graphene toward oxygen reduced reduction (ORR) is of particular interest for both fundamental research and practical application in fuel cell. Deposing graphene on selected substrate provides a structure-intact strategy to enhance its chemical reactivity due to substrate-induced charge and interface effect. Here, we report the graphene deposited on one-dimensional electride Y5Si3 as an effective ORR catalyst in acidic media. Thermodynamic calculations suggest that depositing graphene on electride materials can facilitate the protonation of O2, which is the rate-determining step based on the four-electron reaction pathway and thus promote the ORR activity. Further electronic calculations reveal that low work function (3.5 eV), superior electrical conductivity and slight charge transfer from substrate to graphene result in the enhanced ORR performance of graphene. These findings shed light on the rational design of ORR catalysts based on graphitic materials and emphasize the critical role of substrates for energy-related electro-chemical reactions." @default.
• W2903520973 created "2018-12-11" @default.
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• W2903520973 date "2018-10-01" @default.
• W2903520973 modified "2023-10-16" @default.
• W2903520973 title "Enhanced oxygen reduction on graphene via Y₅Si₃ electride substrate: A first-principles study" @default.
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• W2903520973 doi "https://doi.org/10.1063/1674-0068/31/cjcp1804071" @default.
• W2903520973 hasPublicationYear "2018" @default.
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