Europium-based metal organic framework material, preparation method thereof and application of europium-based metal organic framework material as proton conduction material

The invention discloses a europium-based metal organic framework material, a preparation method thereof and an application of the europium-based metal organic framework material as a proton conductionmaterial. The molecular formula of the Eu(III)-MOFs is {[Eu2 (TTHA) (H2O) 4]. 9H2O} n, and TTHA represents an anionic group formed by loss of six protons of a ligand 1, 3, 5-triazine-2, 4, 6-triamine-hexaacetic acid. The preparation method comprises the following steps: adding H6TTHA, 4,4'-dipyridyl and Eu(NO3)3.6H2O into a water/acetonitrile mixed solvent, regulating the pH value of the solutionsystem to be acidic, and carrying out hydrothermal reaction to obtain the Eu(III)-MOFs. The Eu(III)-MOFs have relatively good proton conductivity in relatively wide temperature and relative humidityranges, and the conductivity reaches 3.50*10 S.cm at 353K and 98% RH, is higher than that of most MOFs proton conductors reported in the prior art, and can be widely applied to electrochemical devices, sensors, fuel c