US11901545B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11901545-B2 |
| Application number | US-202217590849-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 2, 2022 |
| Priority date | Jun 1, 2017 |
| Publication date | Feb 13, 2024 |
| Grant date | Feb 13, 2024 |
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
What the patent document calls the invention.
A short plain-language summary of the technical disclosure.
Who owns or filed the patent and who is credited as inventor.
Filing, priority, publication, and grant dates set the timeline.
The legal scope of protection — read this for what is actually claimed.
Technology tags used to group this patent with similar filings.
Prior art links and similar publications in this corpus.
Official abstract text for this publication.
Methods for producing a negative electrode active material particle which includes a silicon compound particle containing a silicon compound that contains oxygen. The methods including preparing a silicon compound particle containing a silicon compound that contains oxygen; inserting Li into the silicon compound particle; and heating, while stirring, the Li-inserted silicon compound particle in a furnace to produce a negative electrode active material particle, wherein at least part of Si constituting the silicon compound particle is present in at least one state selected from oxide of Si 2+ to Si 3+ containing no Li, and compound containing Li and Si 2+ to Si 3+ .
Opening claim text (preview).
The invention claimed is: 1. A method for producing a negative electrode active material particle including a silicon compound particle, comprising the steps of: preparing a silicon compound particle containing a silicon compound that contains oxygen; inserting Li into the silicon compound particle; and heating, while stirring, the Li-inserted silicon compound particle in a furnace to produce a negative electrode active material particle, wherein at least part of Si constituting the silicon compound particle after the heating is present in at least one state selected from an oxide of Si 2+ to Si 3+ containing no Li, and a compound containing Li and Si 2+ to Si 3+ , wherein the silicon compound particle has a peak or shoulder peak in an energy range from 1844 eV to 1846.5 eV in a XANES region of a Si K-edge in an X-ray absorption spectrum obtained when an X-ray absorption fine structure analysis is performed, and wherein as the silicon compound particle is charged with electricity in a larger amount in an electricity charging process, the peak or shoulder peak appearing in the energy range from 1844 eV to 1846.5 eV in the XANES region of the Si K-edge has a higher intensity.
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Negative electrodes · CPC title
Related publications grouped by family.
Answers are generated from the same data shown on this page.