Adhesive for battery, battery using the same and method of fabricating the same
First Claim
1. An adhesive for battery used for adhering an electrode to a separator, comprising a mixture of(1) at least one organic vinyl monomer having two or more vinyl groups per molecule, (2) a volatile organic solvent, (3) a reaction catalyst, selected from azobisisobutyronitrile, benzoyl peroxide and lauroyl peroxide, (4) a thermoplastic resin selected from the group consisting of polyacrylic esters and polymethacrylic esters, and (5) at least one organic vinyl monomer containing one vinyl group per molecule selected from the group consisting of methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, isobornyl methacrylate, tetrahydrofurfuryl methacrylate, styrene, vinyl chloride and acrylonitrile, wherein said adhesive has a property that it becomes porous when heated, whereby said at least one organic vinyl monomer having two or more vinyl groups per molecule undergoes crosslinked polymerization, and said volatile organic solvent is evaporated off, and wherein said thermoplastic resin is present in an adhesive-strength increasing amount.
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Accused Products
Abstract
A lithium ion battery comprising a positive electrode 1, a negative electrode 4 and a separator 7 for retaining an electrolyte, characterized in that as an adhesive 8 for bonding said positive electrode 1 to said separator 7 and said negative electrode 4 to said separator 7 there is used a thermosetting adhesive comprising a mixture of at least one organic vinyl compound containing two or more vinyl groups per molecule, a reaction catalyst and a volatile organic solvent.
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Citations
15 Claims
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1. An adhesive for battery used for adhering an electrode to a separator, comprising a mixture of
(1) at least one organic vinyl monomer having two or more vinyl groups per molecule, (2) a volatile organic solvent, (3) a reaction catalyst, selected from azobisisobutyronitrile, benzoyl peroxide and lauroyl peroxide, (4) a thermoplastic resin selected from the group consisting of polyacrylic esters and polymethacrylic esters, and (5) at least one organic vinyl monomer containing one vinyl group per molecule selected from the group consisting of methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, isobornyl methacrylate, tetrahydrofurfuryl methacrylate, styrene, vinyl chloride and acrylonitrile, wherein said adhesive has a property that it becomes porous when heated, whereby said at least one organic vinyl monomer having two or more vinyl groups per molecule undergoes crosslinked polymerization, and said volatile organic solvent is evaporated off, and wherein said thermoplastic resin is present in an adhesive-strength increasing amount.
Specification