Title:
非水電解質二次電池
Document Type and Number:
Japanese Patent JP6799813
Kind Code:
B2
Abstract:
The present invention provides a nonaqueous electrolyte secondary battery capable of suppressing the increase in IV resistance of a battery in a combination of a negative electrode containing a lithium-titanium composite oxide and a carbon material and a positive electrode containing a lithium transition metal oxide. A nonaqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, a separator placed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide in which Ni accounts for 30 mole percent or more of the total molar amount of metal elements excluding Li and also contains tungsten element. The negative electrode contains a lithium-titanium composite oxide and a carbon material. The nonaqueous electrolyte contains a substance reduced on the negative electrode at a potential of 0.5 V to 1.5 V (vs. Li/Li+).
Inventors:
Natsumi Goto
Hitori Sugimori
Kouhei Tsuzuki
Katsutoshi Yanagita
Hitori Sugimori
Kouhei Tsuzuki
Katsutoshi Yanagita
Application Number:
JP2017553616A
Publication Date:
December 16, 2020
Filing Date:
November 21, 2016
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01M10/0525; H01M4/36; H01M4/485; H01M4/525; H01M10/0567; H01M10/0569
Domestic Patent References:
| JP2013131437A | ||||
| JP2015060824A | ||||
| JP2013080726A | ||||
| JP2015165503A | ||||
| JP2013016377A | ||||
| JP10069922A | ||||
| JP2007299728A |
Foreign References:
| WO2015129188A1 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office