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Title:
CATHODE ACTIVE MATERIAL LAYER AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2018200838
Kind Code:
A
Abstract:
To improve cycle characteristics of a lithium ion secondary battery and capacity characteristics after storage at high temperature.SOLUTION: There is provided a cathode active material layer including a positive electrode active material containing a lithium composite oxide and a binder resin containing a first copolymer containing at least Formula 1 and a second copolymer containing at least Formula 2 or 3 at a mass ratio of 25:75 to 75:25.SELECTED DRAWING: Figure 1

Inventors:
FUKATANI TOMOYUKI
HOSHIBA HIROHARU
TAKEI YUKI
Application Number:
JP2017105670A
Publication Date:
December 20, 2018
Filing Date:
May 29, 2017
Export Citation:
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Assignee:
SAMSUNG SDI CO LTD
International Classes:
H01M4/131; H01M4/505; H01M4/525; H01M4/62; H01M10/052
Foreign References:
WO2016068142A12016-05-06
WO2013176092A12013-11-28
WO2017046723A12017-03-23
WO2014157715A12014-10-02
Attorney, Agent or Firm:
IPD International Patent Corporation