Nickel-containing positive electrode slurries having reduced or eliminated gelation and high-energy-density positive electrodes for electrochemical cells
US11600814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2021 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Jun 17, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode precursor or slurry according to various aspects of the present disclosure includes a blended electroactive material and a binder solution. The blended electroactive material includes a first electroactive material and a second electroactive material. The first electroactive material includes nickel. The first electroactive material is selected from the group consisting of LiNixCoyMnzO2 where x is greater than 0.6, LiNixCoyAlzO2 where x is greater than 0.6, LiNixCoyMnzAlαO2 where x is greater than 0.6, or any combination thereof. The second electroactive material includes a phosphor-olivine compound at less than or equal to about 30 weight percent of the blended electroactive material. The binder solution including a polymeric binder and a solvent including N-methyl-2-pyrrolidone. In various aspects, the present disclosure provides a high-nickel-content positive electrode formed from the slurry. In various aspects, the present disclosure provides an electrochemical cell including the positive electrode and a lithium metal negative electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.