• 专利标题:   Method of making a prelithiated, layered anode material, involves contacting an ionic compound and a lithium precursor in an environment, where ionic compound is 3D layered material, and 2D layered material is formed, and lithium ions is introduced from lithium precursor into interlayer spaces.
  • 专利号:   DE102022120235-A1, US2023101215-A1, CN115881946-A
  • 发明人:   BOBEL A C, CAIN J D, MAO L, TAICHIANG Y P, YU P T
  • 专利权人:   GM GLOBAL TECHNOLOGY OPERATIONS INC, GM GLOBAL TECHNOLOGY OPERATIONS INC, GM GLOBAL TECHNOLOGY OPERATIONS INC
  • 国际专利分类:   H01M004/139, H01M004/04, C01B033/06, C01B035/04, H01M010/0525, H01M010/42, H01M004/58
  • 专利详细信息:   DE102022120235-A1 30 Mar 2023 H01M-004/139 202330 German
  • 申请详细信息:   DE102022120235-A1 DE10120235 11 Aug 2022
  • 优先权号:   US486378

▎ 摘  要

NOVELTY - The method involves contacting an ionic compound and a lithium precursor (220) in an environment having a temperature of greater than or equal to about 200°C to less than or equal to about 900°C, where the ionic compound is a three-dimensional (3D) layered material and the ionic compound and the lithium precursor are contacted in the environment. Cations are removed from the ionic compound to create openings in interlayer spaces or voids in the three-dimensional layered material. A two-dimensional (2D) layered material is formed, and lithium ions is introduced from the lithium precursor into the interlayer spaces or cavities to form the pre-lithiated, layered anode material. USE - Method of making a pre-lithiated, layered anode material, e.g. two-dimensional (2D) layered silicon allotrope. ADVANTAGE - The method improves the air stability of the pre-lithiated, layered anode material and/or the pre-lithiated, layered anode material and another negative electroactive material, such as a three-dimensional silicon-allotrope and/or graphite/graphene to mix prior to incorporation into a cell. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating a method of making a pre-lithiated, layered anode material. 210Recovering or preparing the ionic compound and/or lithium precursor 220Contacting ionic compound and lithium precursor in high temperature environment 230Stirring ionic compound and lithium precursor to ensure uniformity 240Extracting the prelithiated layered anode material 250Incorporating the two-dimensional layered anode material