Title:
SECONDARY BATTERY AND METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2024/003662
Kind Code:
A1
Abstract:
The present invention provides a novel positive electrode active material. The present invention also provides a highly safe secondary battery. This lithium ion secondary battery has a positive electrode, wherein the positive electrode has a positive electrode active material, the positive electrode active material having nickel, cobalt, manganese, oxygen, and additive elements. The additive elements are at least one or two or more selected from fluorine, aluminum, magnesium, titanium, and calcium. The positive electrode active material comprises a layer having a large amount of additive elements, and an interior, wherein the layer having a large amount of additive elements has at least one selected from among additive elements the amount of which is larger than in the interior.
Inventors:
YAMAZAKI SHUNPEI (JP)
IKEDA TAKAYUKI (JP)
YOKOMIZO KAZUNE (JP)
OGUNI TEPPEI (JP)
KURIKI KAZUTAKA (JP)
YOSHITANI YUSUKE (JP)
IKEDA TAKAYUKI (JP)
YOKOMIZO KAZUNE (JP)
OGUNI TEPPEI (JP)
KURIKI KAZUTAKA (JP)
YOSHITANI YUSUKE (JP)
Application Number:
PCT/IB2023/056234
Publication Date:
January 04, 2024
Filing Date:
June 16, 2023
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H01M4/525; C01G53/00; H01M4/36; H01M4/505
Foreign References:
| JP2021516434A | 2021-07-01 | |||
| JP2015530721A | 2015-10-15 | |||
| JP2013232438A | 2013-11-14 | |||
| JP2022501789A | 2022-01-06 |
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