• 专利标题:   Directly preparing sodium ferric phosphate composite material from pyrite, comprises e.g. dispersing pyrite and phosphorus source, sodium source, carbon source in absolute ethanol, vacuum ball milling mixed solution, heating solid powder and sintering obtained material.
  • 专利号:   CN114361425-A
  • 发明人:   ZOU G, HOU H, TIAN Y, GAO J, JI X
  • 专利权人:   UNIV CENT SOUTH
  • 国际专利分类:   H01M010/054, H01M004/36, H01M004/52, H01M004/58, H01M004/583
  • 专利详细信息:   CN114361425-A 15 Apr 2022 H01M-004/36 202281 Chinese
  • 申请详细信息:   CN114361425-A CN10046186 17 Jan 2022
  • 优先权号:   CN10046186

▎ 摘  要

NOVELTY - Directly preparing sodium ferric phosphate composite material from pyrite, comprises (i) dispersing pyrite and phosphorus source, sodium source, carbon source in absolute ethanol respectively to obtain mixed solution, adjusting pH value of the mixed solution to 2-6, vacuum ball milling, filtering and drying to obtain solid powder, (ii) heating solid powder to 300-400 ℃ for preheating under protective atmosphere containing hydrogen, and then heating at 500-700 ℃ for sintering to obtain composite material. In the pyrite, the iron and sulfur contents are more than 99.9%, and the associated elements cobalt and nickel are contained. USE - The sodium ferric phosphate composite material is useful in anode material (claimed). ADVANTAGE - The composite material ensures direct synthesis of the mineral material to the battery material, reduces production cost and shortens technological process; and has characteristics of simple preparation method, low cost of raw materials, high theoretical capacity, ideal voltage and stable cycle. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: Sodium ferric phosphate composite material obtained by above method; and Anode material.