期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 145, 期 35, 页码 19225-19231出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.3c03943
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Researchers have reported a new metal-organic framework material, MFM-808-SO4, which exhibits high proton conductivity at high humidity and temperature. The material also possesses excellent photocatalytic activity for water splitting to produce hydrogen.
Proton-exchange membranefuel cells enable the portable utilizationof hydrogen (H-2) as an energy resource. Current electrolyticmaterials have limitation, and there is an urgent need to developnew materials showing especially high proton conductivity. Here, wereport the ultra-fast proton conduction in a novel metal-organicframework, MFM-808, which adopts an unprecedented topology and a uniquestructure consisting of two-dimensional layers of {Zr-6}-clusters.By replacing the bridging formate with sulfate ligands within {Zr-6}-layers, the modified MFM-808-SO4 exhibits anexceptional proton conductivity of 0.21 S & BULL;cm(-1) at 85 & DEG;C and 99% relative humidity. Modeling by molecular dynamicsconfirms that proton transfer is promoted by an efficient two-dimensionalconducting network assembled by sulfate-{Zr-6}-layers.MFM-808-SO4 also possesses excellent photocatalytic activityfor water splitting to produce H-2, paving a new pathwayto achieve a renewable hydrogen-energy cycle.
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