• 专利标题:   Rapidly synthesizing sodium vanadium fluorophosphate anode material by mixing sodium fluoride, vanadium phosphate, carbon source and fluorine source, mechanically activating, placing obtained precursor on carrier, connecting carrier with direct current power supply and electrifying.
  • 专利号:   CN116239094-A
  • 发明人:   DING J, SONG Z, CHEN Y
  • 专利权人:   UNIV TIANJIN
  • 国际专利分类:   C01B025/455, H01M010/054, H01M004/58
  • 专利详细信息:   CN116239094-A 09 Jun 2023 C01B-025/455 202356 Chinese
  • 申请详细信息:   CN116239094-A CN10020898 06 Jan 2023
  • 优先权号:   CN10020898

▎ 摘  要

NOVELTY - Rapidly synthesizing sodium vanadium fluorophosphate anode material comprises (i) taking 3 mol pts. wt. sodium fluoride and 2 mol pts. wt. vanadium phosphate, adding 1-10% carbon source, adding 0.1-1 mol pts. wt. fluorine source to make up the loss of fluorine element, mechanically activating for 0.5-24 hours, mixing the raw materials uniformly, and (ii) placing the obtained precursor on the carrier in the inert atmosphere, connecting the carrier with the direct current power supply, where the electrifying current is 8-45 A, and the duration is 5-35 seconds to obtain sodium vanadium fluorophosphate anode material. USE - The method is useful for quickly synthesizing sodium vanadium fluorophosphate anode material. ADVANTAGE - The method enables to synthesize sodium vanadium fluorophosphate anode material that has good crystallinity, less impurity and small crystal grain size; has short heating time, less fluorine element loss, better capacity and cycle performance than the tube furnace sintering and has reduced energy consumption.