High-viscosity lithium carboxymethyl cellulose and preparation method therefor and application thereof
US11608387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2022 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Feb 28, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application belongs to a technical field of modifying natural polymer materials, provides a high-viscosity lithium carboxymethyl cellulose and preparation method therefor and application thereof. Raw materials are fed into a reactor, and the high-viscosity lithium carboxymethyl cellulose is prepared through an alkalization reaction, an etherification reaction, an acidification reaction and a substitution reaction. The prepared high-viscosity lithium carboxymethyl cellulose can be used for preparing a negative electrode plate of a lithium-ion battery. Compared with the existing lithium carboxymethyl cellulose, the high-viscosity lithium carboxymethyl cellulose provided by the present application can not only reduce an application amount in preparing a negative electrode plate of a lithium-ion battery so as to save a using cost, but also promote an electrochemical performance of the material in combination with a sodium lignin sulfonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.