Patents
US 12719082 B2: Lithium bis(trimethylsilyl) phosphate as a novel bi-functional additive for lithium ion batteries
- Granted
- 2026-08-25
- Filed
- 2022-03-02 application 17685076
- Type
- Utility · 3 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
This work investigates the beneficial roles of lithium bis(trimethylsilyl) phosphate (LiTMSP) which may act as a novel bifunctional additive for lithium ion batteries, in particular, LiNi0.5Mn1.5O4 (LNMO)/graphite cells. The cycle performance of LNMO/graphite cells is significantly improved with incorporation of LiTMSP. Trimethylsilyl functional group therein can react with HF generated through hydrolysis of LiPF6 by residual water in electrolyte solution, followed by a decrease in the concentration of metal ions dissolution from the electrode. The generation of superior passivating surface film derived by LiTMSP on graphite electrode, suppressing further electrolyte reductive decomposition and deterioration/reformation caused by migrated metal ions, is confirmed. Furthermore, LiTMSP derived surface film is likely to have better lithium ions conductivity with a decrease in resistance of the graphite electrode, improving rate performance of cells. The HF scavenging and film-forming effects of LTMPS are responsible for the less polarization of cells enabling to improve cycle performance.
Source: PTBLXML, file of 2026-08-25 (ipgb20260825.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| UNIVERSITY OF RHODE ISLAND BOARD OF TRUSTEES 40 patents | US company or organization | Kingston, RI | PTBLXML, file of 2026-08-25 | |
| GOTION, INC. 20 patents | US company or organization | Independence, OH | GOTION INC. State business registration EXACT high confidence: identical full name and state | PTBLXML, file of 2026-08-25 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Brett Lucht | Kingston, RI | PTBLXML, file of 2026-08-25 | ||
| Jongjung Kim | Warwick, RI | PTBLXML, file of 2026-08-25 | ||
| Venkata A.K. Adiraju | Warwick, RI | PTBLXML, file of 2026-08-25 | ||
| Jennifer Hoffmann | Elyria, OH | PTBLXML, file of 2026-08-25 | ||
| Martin Payne | Avon, OH | PTBLXML, file of 2026-08-25 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01M | Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | H01M10/0567 | PTBLXML, file of 2026-08-25 |
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.