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Patent Searching and Data


Title:
POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PRODUCING SAME, POSITIVE ELECTRODE, AND LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/065254
Kind Code:
A1
Abstract:
The present invention improves the battery characteristics of an all-solid-state LIB. A positive electrode active material according to the present invention comprises particles and coating layers; the particles are represented by composition formula LiaNibCocMndOe (wherein 1.0 ≤ a ≤ 1.05, 0.8 ≤ b ≤ 0.9, 1.8 ≤ e ≤ 2.2, and (b + c + d) = 1); the coating layers are represented by composition formula LiNbO3; and the specific surface area and the particle diameter of this positive electrode active material satisfy the relational expression shown below. Y ≤ 3.5 × X-1 (In the relational expression, X is the particle diameter (μm) of the active material, and Y is the specific surface area (m2/g).)

Inventors:
TAMURA TOMOYA (JP)
Application Number:
PCT/JP2018/033869
Publication Date:
April 04, 2019
Filing Date:
September 12, 2018
Export Citation:
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Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
H01M4/525; H01M4/36; H01M4/505; H01M10/052; H01M10/0562
Foreign References:
JP2010245038A2010-10-28
JP2015056307A2015-03-23
JP2017084674A2017-05-18
JP2011065887A2011-03-31
JP4982866B22012-07-25
JP2007005073A2007-01-11
JPS612859B21986-01-28
Other References:
See also references of EP 3584862A4
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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