▎ 摘　　要

NOVELTY - High-energy aluminum-metal-organic framework (MOF) battery, comprises a positive electrode, a negative electrode, electrolyte and a diaphragm. The positive electrode is a two-dimensional metal organic framework (2D A-MOF) positive electrode or a two-dimensional metal organic framework/reduced graphene oxide (2D A-MOF/rGO) composite positive electrode. The negative electrode is high-purity aluminum foil, and the electrolyte is aluminum chloride/1-ethyl-3-methylimidazolium chloride (AlCl)3/EMImCl) ionic liquid. USE - High-energy aluminum-metal-organic framework (MOF) battery based on multi-site heterogeneous charge storage mechanism. ADVANTAGE - The high-energy aluminum-metal-organic framework (MOF) battery enables to provide a multi-site MOF positive electrode material, which is synthesized by self-assembly of bipolar organic ligands and active metal ions, and realizes the alternate storage of charges of different polarities at multiple sites. The Al-MOF battery has high specific capacity of 180 mAh/g and high energy density of 170Wh/kg, and shows excellent cycling stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a 2D A-MOF or 2D A-MOF/rGO composite material, which involves: dissolving metal salt, pyrazine and polyvinylpyrrolidone (PVP) in a mixed solvent of N, N-Dimethylformamide (DMF) and ethanol to obtain a solution A; dissolving a bipolar organic ligand in a mixed solvent of DMF and ethanol to obtain a solution B; dropwise adding the solution B into the solution A under stirring, carrying out ultrasonic treatment on the obtained mixed solution, transferring the mixed solution into a high-pressure reaction kettle, and reacting for 24 hours at 80℃; after cooling to room temperature, centrifugally collecting the purple product, washing the purple product with absolute ethyl alcohol, and performing vacuum drying to obtain 2D A-MOF micron sheets; mixing and dissolving 2D A-MOF micrometer sheets and graphene oxide with certain mass in dimethylformamide (DMF). The obtained suspension is subjected to ultrasonic treatment, and then transferred the suspension into a high-pressure reaction kettle, reacted for 6 hours at 120℃, and washed and dried to obtain the 2D A-MOF/rGO composite material.