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11.发明公开公开(公告)号：US20240047653A1
公开(公告)日：2024-02-08
申请号：US17880515
申请日：2022-08-03
IPC分类号： H01M4/36 , H01M10/0525 , H01M4/58 , H01M4/04
CPC分类号： H01M4/366 , H01M10/0525 , H01M4/5825 , H01M4/0416
摘要： The present disclosure provides a method for preparing an electroactive material for an electrochemical cell that cycles lithium ions. The method includes immersing a plurality of electroactive material particles in an aqueous solution and adding one or more fluorinated lithium salts to the aqueous solution to form a protective particle coating on each of the electroactive material particles of the plurality of electroactive material particles, where the plurality of electroactive material particles defines the electroactive material. The protective particle coatings are continuous coatings that cover greater than or equal to about 95% of a total exposed surface area of each electroactive material particle of the plurality of electroactive material particles.
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公开(公告)号：US20230101215A1
公开(公告)日：2023-03-30
申请号：US17486378
申请日：2021-09-27
IPC分类号： H01M4/04
摘要： A method for forming a prelithiated, layered anode material includes contacting an ionic compound and a lithium precursor in an environment having a temperature ranging from about 200° C. to about 900° C. The ionic compound is a three-dimensional layered material represented by MX2, where M is one of calcium (Ca) and magnesium (Mg) and X is one of silicon (Si), germanium (Ge), and boron (B). The lithium precursor is selected from the group consisting of: LiH, LiC, LiOH, LiCl, and combinations thereof. The contacting of the ionic compound and the lithium precursor in the environment causes removal of cations from the ionic compound to create openings in interlayer spaces or voids in the three-dimensional layered material thereby defining a two-dimensional layered material and also causes introduction of lithium ions from the lithium precursor into the interlayer spaces or voids to form the prelithiated, layered anode material.
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公开(公告)号：US20230060634A1
公开(公告)日：2023-03-02
申请号：US17465012
申请日：2021-09-02
摘要： The present disclosure provides methods for forming a two-dimensional silicon oxide negative electroactive material. The methods include contacting a two-dimensional silicon allotrope and an oxidizing agent in an environment having a temperature of greater than or equal to about 25° C. to less than or equal to about 1,000° C., where the contacting of the two-dimensional silicon allotrope and the oxidizing agent causes the two-dimensional silicon allotrope to oxidize and form the two-dimensional silicon oxide negative electroactive material. In certain variations, the oxidizing agent includes oxygen and the contacting of the two-dimensional silicon allotrope and the oxidizing agent may include disposing the two-dimensional silicon allotrope in an oxygen-containing environment comprising less than or equal to about 21% of oxygen. In other variations, the oxidizing agent includes a wet chemical agent.
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公开(公告)号：US20220384774A1
公开(公告)日：2022-12-01
申请号：US17335987
申请日：2021-06-01
IPC分类号： H01M4/04 , H01M10/0569
摘要： The present disclosure provides a method for forming a prelithiated, layered anode material. The method includes contacting a precursor material and an electrolyte that includes one or more lithium salts and one or more solvents. The electrolyte may have a molarity greater than or equal to about 0.1 M to less than or equal to a solubility limit of the one or more lithium salts in the one or more solvents. The precursor material may be a three-dimensional layered material and the contacting of the precursor material and the electrolyte causes removal of cations from the precursor material and introduction of lithium ions from the electrolyte into interlayer spaces or voids created by the removal of the cations to form the prelithiated, layered anode material.
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公开(公告)号：US20220384773A1
公开(公告)日：2022-12-01
申请号：US17335972
申请日：2021-06-01
发明人： Jeffrey David CAIN , Thomas E. MOYLAN , Leng MAO , Paul Taichiang YU , Nicholas Paul William PIECZONKA , Andrew Clay BOBEL
IPC分类号： H01M4/04 , H01M4/36 , H01M10/0525 , H01M10/0562
摘要： The present disclosure provides a method for forming a layered anode material. The method includes contacting a precursor material and a first electrolyte. The precursor material is a layered ionic compound represented by MX2, where M is one of calcium and magnesium and X is one of silicon, germanium, and boron. The method further includes applying a first bias and/or current as the precursor material contacts the first electrolyte so as to remove cations from the precursor material to create a two-dimensional structure that defines the layered anode material. In certain variations, the method further include contacting the two-dimensional structure and a second electrolyte, and applying a second bias and/or current as the two-dimensional structure contacts the second electrolyte so as to cause lithium ions to move into interlayer spaces or voids created in the two-dimensional structure by the removal of the cations thereby forming the layered anode material.
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