Title:
HIGH-CURRENT PROCESSING FOR LITHIUM ION BATTERY HAVING METAL-BASED NEGATIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2017/115605
Kind Code:
A1
Abstract:
The present invention relates to a lithium ion battery and a production method therefor, and more specifically, to a method for improving low-temperature capabilities of a lithium ion battery, and to a lithium ion battery having improved rate capacity characteristics. The production method for this lithium ion battery comprises: a step of preparing a unit cell containing a positive electrode, a separator, an electrolyte, and a metal-based negative electrode having an alloyed particle, and then applying a high C-rate discharge current to the unit cell; and a step of stopping the supply of the high C-rate discharge current, then, applying a high C-rate charging current to the unit cell, to charge the unit cell to a high charging level no lower than 90% of the charging level maximum value in the unit cell. Then, the applied high C-rate discharge current (CHD) is higher than a C-rate operating current (Co) passing through the metal-based negative electrode during the use of the lithium ion battery.
Inventors:
WEBER JESSICA (JP)
OSHIHARA KENZO (JP)
OSHIHARA KENZO (JP)
Application Number:
PCT/JP2016/085686
Publication Date:
July 06, 2017
Filing Date:
December 01, 2016
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
H01M10/058; H01M4/38; H01M4/48; H01M10/052
Foreign References:
| JP2014036009A | 2014-02-24 | |||
| JP2011175945A | 2011-09-08 | |||
| JP2009224119A | 2009-10-01 | |||
| JP2001176560A | 2001-06-29 |
Other References:
See also references of EP 3399584A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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