Inorganic oxide powder, inorganic oxide-containing slurry, lithium ion secondary battery using said slurry, and production method therefor
US9577237B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2013 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Apr 21, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An object of the present invention is to provide an inorganic oxide powder suitable for forming an inorganic oxide porous membrane, which is superior in lithium ion conductivity and has insulation performance, on at least one surface of a positive electrode, a negative electrode and a separator which constitute a lithium ion secondary battery. The present invention relates to an inorganic oxide powder for use in forming an inorganic oxide porous membrane having insulation performance on at least one surface of a positive electrode, a negative electrode and a separator which constitute a lithium ion secondary battery, wherein the powder has 1) an oxide purity of 90% by weight or higher; 2) an average particle diameter of 1 μm or less; and 3) an average three-dimensional particle unevenness of 3.0 or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.