Lithium-ion rechargeable battery
A pseudo-spinel structured positive electrode active material for lithium-ion batteries addresses capacity degradation and structural instability, enhancing cycle performance and safety through minimal crystal structure changes.
JP2026116368APending Publication Date: 2026-07-09SEMICON ENERGY LAB CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SEMICON ENERGY LAB CO LTD
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-09
Smart Images
Figure 2026116368000001_ABST
Abstract
To provide a positive electrode active material with high capacity and good cycle characteristics. [Solution] The positive electrode active material is designed to show little change in its crystal structure between the charging and discharging states. For example, in the discharged state, it has a layered rock salt-type crystalline structure, and when charged with a high voltage of about 4.6V... In its state, the positive electrode active material having a pseudo-spinel type crystal structure is more responsive than known positive electrode active materials. The crystal structure and volume change little before and after discharge. When analyzed by XRD, 2θ = 19.30 ± 0.20° and 2θ = 45.55 ± 0 A diffraction peak occurs at 0.10°.
Need to check novelty before this filing date? Find Prior Art