Title:
LITHIUM-ION CELL
Document Type and Number:
WIPO Patent Application WO/2017/068985
Kind Code:
A1
Abstract:
Provided is a lithium-ion cell having excellent input characteristics, lifetime characteristics, and overcharging resistance. In order to achieve these objectives, the lithium-ion cell has a negative electrode that includes graphite and amorphous carbon, and a positive electrode that includes a lithium transition metal composite oxide. The content of graphite included in the negative electrode is 10-70 mass% in relation to the total amount of graphite and amorphous carbon included in the negative electrode, and the capacitance ratio, which is the ratio of the capacitance of the negative electrode to the capacitance of the positive electrode, is 1.3-2.2.
Inventors:
HOSHI KENTO (JP)
ABE MIE (JP)
ABE MIE (JP)
Application Number:
PCT/JP2016/079737
Publication Date:
April 27, 2017
Filing Date:
October 06, 2016
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD (JP)
International Classes:
H01M10/0525; H01M4/131; H01M4/36; H01M4/505; H01M4/525; H01M4/587; H01M10/0569; H01M10/058
Domestic Patent References:
| WO2015190480A1 | 2015-12-17 |
Foreign References:
| JP2000340262A | 2000-12-08 | |||
| JP2012190731A | 2012-10-04 | |||
| JP2015060824A | 2015-03-30 | |||
| JP2013157136A | 2013-08-15 | |||
| JP2015046283A | 2015-03-12 | |||
| JP2013171646A | 2013-09-02 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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