Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2001-05-11
2004-09-21
Maples, John S. (Department: 1745)
Metal working
Method of mechanical manufacture
Electrical device making
C029S623100, C029S025030
Reexamination Certificate
active
06793692
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to manufacture of electrical component such as a battery or an electrical double layer capacitor.
DESCRIPTION OF PRIOR ART
In the past, a battery where ions migrate between electrodes, called a polymer gel battery and which has an ion conductive polymer layer arranged between the positive electrode structure and the negative electrode structure is known. A typical method for manufacturing this battery is as follows: P(VdF-HFP), i.e. a copolymer of vinylidene fluoride and propylene hexafluoride, dibutyl phthalic acid (DBP), silica particles, and acetone are mixed together and turned to paste-like state. This paste is coated on positive and negative electrode structures. A separator is disposed between the positive and the negative electrodes which are arranged at opposed positions and are integrated by heating and pressing. Then, DBP is extracted using an extraction solvent and is washed. A liquid electrolyte containing ion conductive salt is penetrated into it, and a battery is prepared. However, there have been problems with this method; specifically, in that the liquid electrolyte containing ion conductive salt is not easily penetrated into a polymer layer rapidly and evenly, preventing the production of a battery of good quality.
OBJECT AND SUMMARY OF THE INVENTION
The present invention aims to provide an electrical component, in which ions migrate between electrodes and which can provide a higher efficiency.
The present invention also aims to provide an electrical component, in which ions migrate between electrodes and which ensures higher safety.
Also, the present invention aims to provide a battery or an electrical double layer capacitor, which provides higher efficiency.
The present invention also aims to provide a method for penetrating the liquid electrolyte into ion conductive polymer layer both evenly and rapidly.
The present invention provides a method for manufacturing an electrical component where ions migrate between electrodes, said method comprising the steps of: forming an ion conductive polymer layer; dissolving ions on an electrode material layer of at least one of electrode structures, said one of electrode structures comprises an electrode material layer formed on a current collector; arranging a pair of electrode structures at opposed positions; and accommodating the electrode structures in an accommodation unit.
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Osaka et al., “Acetylene black/poly(vinylidene fluoride) gel electrolyte composite electrode for an electric double-layer capacitor”, Journal of Power Sources, vol. 74, No. 1, pp. 122-128 (1998), no month.
Clericuzio et al., “Ionic diffusivity and conductivity of plasticized polymer electrolytes: PMFG-NMR and complex impendance studies”, Solid State Ionics, North Holland Pub. Company; vol. 82, No. 3, pp. 179-192 (1995), no month.
Sato Takaya
Shimizu Tatsuo
Apex Juris pllc
Heims Tracy M.
Maples John S.
Nisshinbo Industries Inc.
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