Title:
リチウムイオン二次電池
Document Type and Number:
Japanese Patent JP7213853
Kind Code:
B2
Abstract:
The invention is directed to a lithium ion secondary battery comprising: a positive electrode active material comprising lithium, cobalt, and oxygen, wherein dQ/dV vs V curve in a range of greater than or equal to 4.0V and less than or equal to 4.8V which is obtained by differentiating capacitance (Q) with voltage (V) does not have a maximum peak in a range of greater than or equal to 4.5V and less than or equal to 4.7 V
Inventors:
Masahiro Takahashi
Mayumi Mikami
Yohei Kadoma
Teruaki Ochiai
Mayumi Mikami
Yohei Kadoma
Teruaki Ochiai
Application Number:
JP2020153154A
Publication Date:
January 27, 2023
Filing Date:
September 11, 2020
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H01M4/525; H01M4/131; H01M4/36; H01M10/052
Domestic Patent References:
| JP2015015169A | ||||
| JP2010135090A |
Foreign References:
| WO2003081698A1 | ||||
| WO2004102700A1 | ||||
| WO2012176903A1 |
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