Title:
POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME, POSITIVE ELECTRODE MIXTURE PASTE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/043515
Kind Code:
A1
Abstract:
Provided are the following: a positive electrode active substance which exhibits excellent output characteristics and charging and discharging capacity and in which gelation is suppressed; and a positive electrode mixture paste and non-aqueous electrolyte secondary battery using such positive electrode active substance. The positive electrode active substance for a non-aqueous electrolyte secondary battery contains a first lithium-metal composite oxide, which is represented by general formula (1): Lis1Ni1-x1-y1-z1Cox1Mny1Mz1O2+α and which includes a secondary particle formed by a plurality of primary particles aggregating, and at least either a first compound that contains lithium and boron or a second compound that contains lithium and tungsten, and satisfies at least either of the following characteristics (1) or (2): (1) he surfaces of the primary particles are covered with the first compound, and the content of boron is 0.01-0.5 mass% relative to the entirety of the positive electrode active substance; and (2) the surfaces of the primary particles are covered with the second compound, and the content of tungsten is 0.01-1.0 mass% relative to the entirety of the positive electrode active substance.
Inventors:
OTSUKA YOSHIHIRO (JP)
SARUWATARI MOTOAKI (JP)
RYOSHI KAZUOMI (JP)
SARUWATARI MOTOAKI (JP)
RYOSHI KAZUOMI (JP)
Application Number:
PCT/JP2017/031032
Publication Date:
March 08, 2018
Filing Date:
August 29, 2017
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
H01M4/525; H01M4/1391; H01M4/36; H01M4/505
Domestic Patent References:
| WO2012160698A1 | 2012-11-29 | |||
| WO2012105048A1 | 2012-08-09 |
Foreign References:
| JP2013125732A | 2013-06-24 | |||
| JP2015536558A | 2015-12-21 | |||
| JP2015201432A | 2015-11-12 |
Attorney, Agent or Firm:
NISHI, Kazuya et al. (JP)
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