| abstract |
A method for preparing carbon-coated potassium titanium phosphate nanoflowers derived from metal-organic frameworks belongs to the field of novel secondary battery materials, and specifically discloses a carbon-coated potassium titanium phosphate derived from metal-organic frameworks (MOFs). Preparation method of nanoflowers. A small-sized titanium-based metal-organic framework (MIL-125) was used as a precursor, and it was added to a solvent containing phosphoric acid and potassium dihydrogen phosphate, and then derivatized into ultrathin potassium titanium phosphate ( KTi 2 (PO 4 ) 3 ) nanoflowers. The sheet composed of potassium titanium phosphate nanoflower not only realizes the directional growth along a single crystal plane, but also uniformly coats a layer of ultra-thin amorphous carbon on its surface. When used as a negative electrode material for sodium-ion batteries, the material exhibits high specific capacity and good cycling stability. At the same time, the material has a simple synthesis method, can realize large-scale production, and has a wide commercial application prospect. |