Title:
二次電池、正極及び正極活物質
Document Type and Number:
Japanese Patent JP7401582
Kind Code:
B2
Abstract:
A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.
Inventors:
Mayumi Mikami
Aya Uchida
Yumiko Yoneda
Yohei Kadoma
Masahiro Takahashi
Teruaki Ochiai
Aya Uchida
Yumiko Yoneda
Yohei Kadoma
Masahiro Takahashi
Teruaki Ochiai
Application Number:
JP2022032602A
Publication Date:
December 19, 2023
Filing Date:
March 03, 2022
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H01M4/525; H01G11/46; H01M10/052
Domestic Patent References:
| JP2015156363A | ||||
| JP2014139119A | ||||
| JP2006164758A | ||||
| JP201887096A | ||||
| JP2000501060A | ||||
| JP2016127016A |
Foreign References:
| WO2017061633A1 |