Positive electrode plate, and electrochemical apparatus and electronic apparatus containing such positive electrode plate
US12327864B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2022 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Oct 8, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode plate includes a positive electrode current collector and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector, where the positive electrode active material layer includes a first positive electrode active material represented by chemical formula (1) and a second positive electrode active material represented by chemical formula (2): Li1+xAaFeyMnzTivPO4−wSw (1), and Li2+rNasM1+qO2+t (2); and the positive electrode plate satisfies: 5.2≤R/Q≤13.5. Such a positive electrode plate can achieve a high specific discharge capacity of the electrochemical apparatus, thereby increasing energy density of the electrochemical apparatus. In addition, a relationship between compacted density R and single surface density Q of the positive electrode plate is limited, effectively improving cycling stability and rate performance of the electrochemical apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.