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 (JP)
ASAKAWA TAKESHI (JP)
ASAKAWA TAKESHI (JP)
Application Number:
PCT/JP2017/020910
Publication Date:
December 14, 2017
Filing Date:
June 06, 2017
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
H01M4/36; B03C1/00; B03C1/02; C01D15/02; C01G53/00; H01M4/505; H01M4/525
Domestic Patent References:
| WO2014136760A1 | 2014-09-12 |
Foreign References:
| US20140334997A1 | 2014-11-13 | |||
| JPH04193711A | 1992-07-13 | |||
| JPH03186363A | 1991-08-14 | |||
| JP2004311297A | 2004-11-04 | |||
| JP2003242976A | 2003-08-29 | |||
| JP2012092004A | 2012-05-17 | |||
| JP2009164062A | 2009-07-23 | |||
| JP2005015282A | 2005-01-20 | |||
| JP2003119026A | 2003-04-23 | |||
| JP2015060755A | 2015-03-30 |
Other References:
IYAKUHIN ET AL.: "Fine Chemicals Seizo ni Okeru Jisei Ibutsu Jokyo Gijutsu", PLANT AND PROCESS, vol. 56, no. 7, July 2014 (2014-07-01), pages 53 - 57, XP009514305
See also references of EP 3467909A4
See also references of EP 3467909A4
Attorney, Agent or Firm:
YAMAUCHI PATENT ATTORNEYS (JP)
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