Patents
US 12731858 B2: Oxidized bacterial cellulose separator for batteries and method for producing the same
- Granted
- 2026-09-08
- Filed
- 2023-01-12 application 18154037
- Type
- Utility · 6 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A separator for a lithium-based battery, and method for fabricating the same is disclosed. The method includes oxidizing cellulose fibrils to form oxidized cellulose having carboxylic functional groups, decorating the oxidized cellulose with nanoparticles, and forming the nanoparticle-decorated oxidized cellulose into a film to become the separator for the lithium-based battery. The cellulose may be a bacterial cellulose. The cellulose fibrils may be oxidized through a TEMPO oxidation. Decorating the oxidized cellulose with nanoparticles may include introducing a precursor solution to the oxidized cellulose that reacts with hydroxyl groups of the oxidized cellulose while preserving the carboxylic functional groups, causing the nanoparticles to nucleate on the surface of the oxidized cellulose. The nanoparticles may be composed of an oxide material. The oxide material may be SiO2. The precursor solution may be tetraethyl orthosilicate (TEOS).
Source: PTBLXML, file of 2026-09-08 (ipgb20260908.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY 1,571 patents | US company or organization | Scottsdale, AZ | PTBLXML, file of 2026-09-08 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Zhaoyang Fan | Chandler, AZ | PTBLXML, file of 2026-09-08 | ||
| Wenyue Li | Chandler, AZ | PTBLXML, file of 2026-09-08 | ||
| Shu Wang | Chandler, AZ | PTBLXML, file of 2026-09-08 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01M | Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | H01M50/4295 | PTBLXML, file of 2026-09-08 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.