Title:
POSITIVE ELECTRODE ACTIVE MATERIAL PRODUCTION METHOD, POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2017/082314
Kind Code:
A1
Abstract:
Provided are: a production method for a positive electrode active material whereby a lithium ion secondary battery having high discharge capacity and high initial efficiency can be obtained; a positive electrode active material; a positive electrode for lithium ion secondary batteries; and a lithium ion secondary battery. The production method for the positive electrode active material has: a mixing step in which a lithium compound, an alkali metal compound other than Li, and a transition metal-containing compound including at least Ni and Mn are mixed and a mixture is obtained; a step in which the mixture is fired at a temperature of 900-1,100°C and a first lithium-containing complex oxide including an alkali metal other than Li is obtained; and a step in which the alkali metal other than Li is removed from the first lithium-containing complex oxide and a second lithium-containing complex oxide indicated by the formula is obtained. In the formula, 0 < a < 1 and M is an element including at least Ni and Mn. aLi (Li1/3Mn2/3)O2· (1-a) LiMO2
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Inventors:
SAKAI TOMOHIRO (JP)
Application Number:
PCT/JP2016/083278
Publication Date:
May 18, 2017
Filing Date:
November 09, 2016
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
H01M4/505; C01G53/00; H01M4/131; H01M4/525
Domestic Patent References:
| WO2014192759A1 | 2014-12-04 |
Foreign References:
| JP2014026959A | 2014-02-06 | |||
| JP2009230863A | 2009-10-08 | |||
| JP2015118762A | 2015-06-25 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
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