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Patent Searching and Data


Title:
SECONDARY BATTERY, VEHICLE, AND METHOD FOR PRODUCING SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/029544
Kind Code:
A1
Abstract:
The present invention provides: a secondary battery which has improved energy density per weight and volume; and a positive electrode active material. A secondary battery according to the present invention is provided with a positive electrode; the positive electrode comprises lithium cobaltate; and the lithium cobaltate at least contains one or more elements selected from among Hf, V, Nb, Ce and Sm in a projected part. The projected part may additionally contain Mg, F, Ni or Al as an additive element. According to the present invention, a positive electrode active material is produced through a process wherein a mixed liquid is produced by mixing lithium cobaltate with a metal alkoxide that contains one or more elements selected from among Hf, V, Nb, Ce and Sm. This positive electrode active material enables the achievement of a secondary battery which has a high charging voltage.

Inventors:
SAITO JO (JP)
MOMMA YOHEI (JP)
OCHIAI TERUAKI (JP)
YOSHITANI YUSUKE (JP)
MIKAMI MAYUMI (JP)
Application Number:
PCT/IB2021/056700
Publication Date:
February 10, 2022
Filing Date:
July 26, 2021
Export Citation:
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Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
C01G51/00; H01M4/36; H01M4/525
Foreign References:
JP2016096075A2016-05-26
JP2016062683A2016-04-25
JP2006190687A2006-07-20
JP2017091777A2017-05-25
JP2017063053A2017-03-30
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