Title:
SEPARATOR FOR ZINC-BROMINE BATTERY
Document Type and Number:
Japanese Patent JPH01157071
Kind Code:
A
Abstract:
PURPOSE:To make bromine permeability smaller as well as to improve the extent of coulombic efficiency by forming a separator with a polyolefine fine porous film containing polyolefine and silica, and specifying the ratio of a silicon atomic number to a carbon atomic number coming to the surface. CONSTITUTION:A separator 12 separating a positive electrode side liquid chamber 10a from a negative electrode side liquid chamber 10b is formed with a polyolefine fine porous film containing polyolefine and silica, and the ratio Si/C of a silicon atomic number (Si) to a carbon atomic number (C) coming to the surface should be set to be more than 0.2. With this constitution, hydrophile property on the surface increases, and any sticking of a bromine complex onto the surface is prevented from occurring, so that bromine permeability in the separator 12 is made reducible, and thus a coulombic effect is improved.
Inventors:
SASAKI TORAHIKO
KAWAHARA KAZUO
SAEKI TORU
KAWAHARA KAZUO
SAEKI TORU
Application Number:
JP31329287A
Publication Date:
June 20, 1989
Filing Date:
December 11, 1987
Export Citation:
Assignee:
TOYOTA MOTOR CORP
TOYOTA CENTRAL RES & DEV
TOYOTA CENTRAL RES & DEV
International Classes:
H01M12/08; H01M50/417; (IPC1-7): H01M12/08
Attorney, Agent or Firm:
Kenji Yoshida
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