• 专利标题:   Anode active material for sodium ion battery used as secondary energy storage device in energy automobile, comprises sodium-iron-titanium-magnesium phosphate.
  • 专利号:   CN115566187-A
  • 发明人:   LI S, LI Y, WANG H
  • 专利权人:   SHANGHAI LINGFANG NEW ENERGY TECHNOLOGY
  • 国际专利分类:   C01B025/45, C01B025/455, C01B032/05, H01M010/054, H01M004/136, H01M004/38, H01M004/58, H01M004/62
  • 专利详细信息:   CN115566187-A 03 Jan 2023 H01M-004/58 202311 Chinese
  • 申请详细信息:   CN115566187-A CN11412020 11 Nov 2022
  • 优先权号:   CN11412020

▎ 摘  要

NOVELTY - Anode active material comprises sodium-iron-titanium-magnesium phosphate formula of (I), is new. USE - Anode active material for sodium ion battery used as secondary energy storage device in energy automobile, mobile intelligent device, and scale energy storage field. ADVANTAGE - Anode active material is provided with a conductive carbon coating layer with a certain thickness, the doping of Ti and Mg elements can improve the electrochemical performance anode active material, especially the cycle performance and multiplying power performance and divalent Mg will balance the excessive lattice defect caused by tetravalent Ti element doping under the double synergetic effect of titanium and magnesium (Mg) elements, the electro-chemical performance of the phosphate-based sodium ion battery can be obviously improved. DETAILED DESCRIPTION - Anode active material comprises sodium-iron-titanium-magnesium phosphate formula of Na4Fe(3-x1-x2)Tix1Mgx2(PO4)2(P2O7)/C or Na2Fe(1-x3-x4)Tix3Mgx4PO4F/C (I), where x1=0-0.8, x2=0-0.2, x3=0-0.6, and x4=0-0.2, is new. INDEPENDENT CLAIMS are included for: Preparation method of the anode material. Sodium ion battery anode. Sodium ion battery.