Title:
Lead storage battery
Document Type and Number:
Japanese Patent JP6237922
Kind Code:
B2
Abstract:
Provided is a lead storage battery that can achieve both suppression of electrolyte stratification and suppression of high rate discharge performance degradation. A first embodiment of a lead storage battery of the present invention is characterized by the following: a porous membrane (8) through which electrolytes can pass is disposed around a negative electrode plate (5); the porous membrane (8) includes a base material (12) having a hydrophobic functional group, and a hydrophilic coating film (9) formed on the surface of the base material (12); the hydrophilic coating film (9) includes a hydrophilic material (10) and a binder (11); the binder (11) has a hydrophobic functional group and a hydrophilic functional group, and has a structure wherein the hydrophobic functional group of the binder (11) and the hydrophobic functional group of the base material (12) are joined; and the binder (11) has the hydrophilic functional group on the edge of the surface side of the hydrophilic coating film.
Inventors:
Harada element
Akiko Kagazume
Shingo Araki
Satoshi Minoura
Tetsuro Ogoshi
Iwasaki Fusei
Toshio Shibahara
Toshio Abe
Akiko Kagazume
Shingo Araki
Satoshi Minoura
Tetsuro Ogoshi
Iwasaki Fusei
Toshio Shibahara
Toshio Abe
Application Number:
JP2016552067A
Publication Date:
November 29, 2017
Filing Date:
September 29, 2015
Export Citation:
Assignee:
Hitachi Chemical Co., Ltd.
International Classes:
H01M4/14; H01M10/12; H01M50/409; H01M50/443
Domestic Patent References:
| JP2011070904A | ||||
| JP2011181436A | ||||
| JP2005190686A | ||||
| JP2014194911A |
Foreign References:
| WO2012157311A1 | ||||
| WO2015146919A1 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation
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