Patent · US Active

Positive electrode sheet, secondary battery, battery module, battery pack, and electrical apparatus

US11973218B2 · kind B2 · utility

3Cited by
0References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 16, 2023
Grant dateApr 30, 2024
Priority date
Expiry dateOct 16, 2043

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02E60/10
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

A novel positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus are described. The positive electrode sheet includes a positive electrode current collector and a positive electrode film layer with a single-layer structure or a multi-layer structure. When the positive electrode film layer is a single-layer structure, at least one of the positive electrode film layers comprises a first positive electrode active material and a second positive electrode active material; and/or, when the positive electrode film layer is a multi-layer structure, at least one layer of at least one of the positive electrode film layers comprises a first positive electrode active material and a second positive electrode active materials. The first positive electrode active material includes an inner core, a first cladding layer comprising crystalline pyrophosphates, a second cladding layer comprising crystalline phosphate, and a third cladding layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.