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Title:
LITHIUM COMPOUND, PRODUCTION METHOD FOR LITHIUM COMPOUND, AND PRODUCTION METHOD FOR POSITIVE ELECTRODE ACTIVE MATERIAL FOR USE IN NON-AQUEOUS SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2017/213112
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a lithium compound with which it is possible to easily obtain a positive electrode active material containing a lower amount of magnetic substances while being able to shorten the total time required for manufacturing a non-aqueous electrolytic secondary battery positive electrode. Provided is a lithium compound used for manufacturing a positive electrode active material for a non-aqueous electrolytic secondary battery, which enables production of a lithium-transition metal composite oxide by being mixed with a transition metal composite hydroxide or the like obtained through a crystallization reaction, and further by firing a resultant mixture thereof, wherein when said lithium compound is added with water and a magnet and subjected to mixing and stirring, the amount of magnetic substances captured by the magnet is not more than 0.0007 mass% with respect to the amount of lithium in the lithium compound. This configuration enables easy production of a positive electrode active material that contains magnetic substances in an amount of 0.02 mass-ppm or less while being able to shorten the total time required for manufacturing the positive electrode active material.

Inventors:
TAGAMI Azusa (SUMITOMO METAL MINING CO. LTD., 17-3, Isoura-ch, Niihama-shi Ehime 02, 〒7920002, JP)
ASAKAWA Takeshi (SUMITOMO METAL MINING CO. LTD., 17-3, Isoura-ch, Niihama-shi Ehime 02, 〒7920002, JP)
Application Number:
JP2017/020910
Publication Date:
December 14, 2017
Filing Date:
June 06, 2017
Export Citation:
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Assignee:
SUMITOMO METAL MINING CO., LTD. (11-3, Shimbashi 5-Chome Minato-k, Tokyo 16, 〒1058716, JP)
International Classes:
H01M4/36; B03C1/00; B03C1/02; C01D15/02; C01G53/00; H01M4/505; H01M4/525
Attorney, Agent or Firm:
YAMAUCHI PATENT ATTORNEYS (Nihon Seimei-Takamatsu-Ekimae Bldg. 3F, 1-1-8 Kotobuki-cho, Takamatsu-sh, Kagawa 23, 〒7600023, JP)
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