Title:
LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/047656
Kind Code:
A1
Abstract:
Provided are: a lithium ion secondary battery having excellent storability and charge/discharge cycle characteristics; and a method for manufacturing the same. The present invention pertains to a lithium ion secondary battery having: an electrode assembly in which a positive electrode and a negative electrode are stacked or wound with a separator therebetween; and a non-aqueous electrolyte solution, the lithium ion secondary battery being characterized in that: negative electrode active materials in the negative electrode include Si-containing material S; the content of material S is at least 5 mass% when the total amount of the negative electrode active materials contained in the negative electrode is 100 mass%; the non-aqueous electrolyte solution includes a solvent containing propylene carbonate and chain carbonate; the volume content of the propylene carbonate in the solvent is 10-50 vol%; the positive electrode has, on at least one surface of a positive electrode current collector, a positive electrode cladding layer containing, as a positive electrode active material, a metal oxide consisting of Li and metal M, which is a metal other than Li; and the upper limit of charging voltage is at least 4.35 V.
Inventors:
ABE HIROSHI (JP)
YOSHIKAWA SUSUMU (JP)
SEKIYA TOMOHITO (JP)
YOSHIKAWA SUSUMU (JP)
SEKIYA TOMOHITO (JP)
Application Number:
PCT/JP2017/030754
Publication Date:
March 15, 2018
Filing Date:
August 28, 2017
Export Citation:
Assignee:
MAXELL HOLDINGS LTD (JP)
International Classes:
H01M10/052; H01M4/36; H01M4/38; H01M4/48; H01M4/525; H01M10/0569; H01M10/0585; H01M10/0587; H01M50/414; H01M50/417; H01M50/451; H01M50/491
Domestic Patent References:
| WO2016129629A1 | 2016-08-18 | |||
| WO2015136922A1 | 2015-09-17 | |||
| WO2014077113A1 | 2014-05-22 | |||
| WO2014112026A1 | 2014-07-24 | |||
| WO2015182690A1 | 2015-12-03 | |||
| WO2017057588A1 | 2017-04-06 | |||
| WO2017061064A1 | 2017-04-13 |
Foreign References:
| JP2009076372A | 2009-04-09 |
Attorney, Agent or Firm:
MIWA, Tetsuo et al. (JP)
Download PDF: