Title:
BINDER FOR SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2017/138604
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a binder composition for a secondary cell for obtaining both improvement in charge-discharge efficiency of a cell and good cycle characteristics, attributable to a polyimide binder. This binder composition for a secondary cell is characterized by containing a polyamic acid containing a repeating unit comprising a backbone based on an aromatic tetracarboxylic dianhydride, and a backbone based on an alicyclic diamine represented by the structural formula below; and/or a polyamic acid containing a repeating unit comprising a backbone based on an alicyclic tetracarboxylic acid dianhydride, and a backbone based on an aromatic diamine. NH2–(CH2)n–R2–(CH2)m–NH2 (In the formula, R2 represents an alicyclic group, and n and m represent the number of repeating units respectively selected independently from 1 to 5.)
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Inventors:
SERIZAWA SHIN (JP)
Application Number:
PCT/JP2017/004719
Publication Date:
August 17, 2017
Filing Date:
February 09, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H01M4/62; H01M4/139; H01M4/38; H01M4/48; H01M10/052; H01M10/0566
Domestic Patent References:
| WO2015046304A1 | 2015-04-02 | |||
| WO2013008437A1 | 2013-01-17 | |||
| WO2016125718A1 | 2016-08-11 |
Foreign References:
| JP2012160353A | 2012-08-23 | |||
| JP2017076468A | 2017-04-20 |
Attorney, Agent or Firm:
ITO, Katsuhiro et al. (JP)
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