1. A low volume, high capacity storage device comprising an electrolytic capacitor having at least one anode layer, at least one cathode layer and a spacer comprising an elastomeric electrolyte disposed therebetween, said electrolyte comprising at least two salts in an ionically conductive carrier of high solvation power.
2. A storage device according to claim 1 wherein the molar concentrations of said at least two salts are substan- tially equal.
3. A storage device according to claim 1 wherein said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids.
4. A storage device according to claim 3 wherein the molar concentrations of said at least two salts are substantially equal.
5. A storage device according to claim 4 wherein said at least two salts are ammonium adipate and ammonium glutarate.
6. A storage device according to claim 4 wherein said at least two salts are ammonium adipate and potassium azelate.
7. A storage device according to claim 1 wherein said carrier comprises a crosslinked polymer matrix.
8. A storage device according to claim 7 wherein said crosslinked polymer matrix comprises (a) a polymeric component and (b) a plasticizer comprising a liquid of low molecular weight in which said at least two salts are soluble.
9. A storage device according to claim 8 wherein said plasticizer is selected from the group consisting of ethylene glycol, polyethylene glycol 400, propylene carbonate, dimethyl formamide, dimethylsulfoxide and diethylene glycol.
10. A storage device according to claim 9 wherein said plasticizer is ethylene glycol.
11. A storage device according to claim 8 wherein said crosslinked polymer matrix further comprises water in an amount not less than about 4% by weight of said electrolyte.
12. A storage device according to claim 11 wherein said capacitor is of the high voltage type, and wherein the amount of water does not exceed about 15% by weight of said electrolyte.
13. A storage device according to claim 11 wherein said capacitor is of the low voltage type, and wherein the amount of water does not exceed about 50% by weight f said electrolyte.
14. A storage device according to claims 11, 12 or 13 wherein the amount of water is about 6% by weight of said electrolyte.
15. A storage device according to claim 8 wherein said polymeric component is a solvent for said at least two salt≤ .
16. A storage device according to claim 15 wherein said polymeric component comprises at least one compound chosen from the group consisting of polyvinylpyrrolidinone, polyvinyl- sulfonic acid, polyhydroxyethylacrylate, polyhydroxyethylmetha- crylate, polymers of the general structure
-(-CH2-CR*R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)„-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof.
17. A storage device according to claim 7 wherein said crosslinked polymer matrix further comprises a crosslinking agent.
18. A storage device according to claim 17 wherein said crosslinking agent comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacry- late compounds.
19. A .storage device according to claim 18 wherein said crosslinking agent is tetraethyleneglycol diacrylate.
20. A storage • device according to claim 7 wherein the molar concentrations of said at least two salts are substantially equal and said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids, and wherein said crosslinked polymer matrix comprises (a) a polymeric component in which said at least two salts are soluble and which comprises at least one compound chosen from the group consisting of polyvinylpyrrolidinone, polyvinyl- sulfonic acid, polyhydroxyethylacrylate, polyhydroxyethyl- methacrylate, polymers of the general structure
-(-CH2-CR1R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the ype -(-CH2CH 30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copoly ers thereof, (b) water in an amount between about 4% and about 50% by weight of said electrolyte, (c) a crosslinking agent which comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds, and (d) a plasticizer in which said at least two salts are soluble and which is chosen from the group consisting of ethylene glycol , polyethylene glycol 400, propylene carbonate, dimethyl formamide, dimethylsulfoxide and diethylene glycol.
21. A storage device according to claim 1 wherein said electrolyte comprises poly-2-hydroxyethylmethacrylate, ethylene glycol, ammonium adipate, ammonium glutarate, tetraethylene- glycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
22. A storage device according to claim 1 wherein said electrolyte comprises poly-2-hydroxyethylmethacrylate, ethylene glycol, ammonium adipate, potassium azelate, tetraethylene- glycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
23. A storage device according to claims 1, 4, 20, 21 or 22 wherein said spacer further comprises mechanical separator means impregnated with said electrolyte.
24. A storage device according to claim 23 wherein said separator means is selected from the group consisting of Kraft paper, gauze fabric, porous polypropylene and porous polyethyL- ene.
25. An elastomeric electrolyte for use in a low volume, high capacity storage device comprising an electrolytic capacitor, said electrolyte comprising at least two salts in an ionically conductive carrier of high solvation power.
26. An electrolyte according to claim 25 wherein the molar concentrations of said at least two salts are substan- tially equal.
27. An electrolyte according to claim 25 wherein said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal , ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids.
28. An electrolyte according to claim 27 wherein the molar concentrations of said at least two salts are substantially equal.
29. An electrolyte according to claim 28 wherein said at least two salts are ammonium adipate and ammonium glutarate.
30. An electrolyte according to claim 28 wherein said at least two salts are ammonium adipate and potassium azelate.
31. An electrolyte according to claim 25 wherein said carrier comprises a crosslinked polymer matrix.
32. An electrolyte according to claim 31 wherein said crosslinked polymer matrix comprises (a) a polymeric component and (b) a plasticizer comprising a liquid of low molecular weight in which said at least two salts are soluble.
33. An electrolyte according to claim 32 wherein said plasticizer is selected from the group consisting of ethylene glycol, polyethylene glycol 400, propylene carbonate, dimethyl formamide, dimethylsulfoxide and diethylene glycol.
34. An electrolyte according to claim 33 wherein said plasticizer is ethylene glycol.
35. An electrolyte according to claim 32 wherein said crosslinked polymer matrix further comprises water in an amount not less than about 4% by weight of said electrolyte.
36. An electrolyte according to claim 35 wherein said capacitor is of the high voltage type, and wherein the amount of water does not exceed about 15% by weight "of said electrolyte.
37. An electrolyte according to claim 35' wherein said capacitor is of the low voltage type, and wherein the amount of water does not exceed about 50% by weight of said elec- trolyte.
38. An electrolyte according to claims 35, 36 or 37 wherein the amount of water is about 6% by weight of said electrolyte.
39. An electrolyte according to claim 32 wherein said polymeric component is a solvent for said at least two salts.
40. An electrolyte according to claim 39 wherein said polymeric component comprises at least one compound chosen from the group consisting of polyvinylpyrrolidinone, polyvinylsul- fonic acid, polyhydroxyethylacrylate, polyhydroxyethyl etha- crylate, polymers of the general structure
-(-CH2-CR1R2-)-
where Rτ is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n==0 to 20 and R3 is H or CH3, and copoly ers thereof.
41. An electrolyte according to claim 31 wherein said crosslinked polymer matrix further comprises a crosslinking agent.
42. An electrolyte according to claim 41 wherein said crosslinking agent comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialka- crylate compounds.
43. An electrolyte according to claim 42 wherein said crosslinking agent is tetraethyleneglycol diacrylate.
44. An electrolyte according to claim 31 wherein the molar concentrations of said at least two salts are substantially equal and said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids, and wherein said crosslinked polymer matrix comprises (a) a polymeric component in which said at least two salts are soluble and which comprises at least one compound chosen from the group consisting of polyvinylpyrrolidinone, polyvinyl- sulfonic acid, polyhydroxyethylacrylate, polyhydroxyethyl- methacrylate, polymers of the general structure
-(-CH2-CR1R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the ype -(-CH2CHR30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof, (b) water in an amount between about 4% and about 50% by weight of said electrolyte, (c) a crosslinking agent which comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds, and (d) a plasticizer in which said at least two salts are soluble and which is chosen from the group consisting of ethylene glycol, polyethylene glycol 400, propylene carbonate, dimethyl formamide, dimethylsulfoxide and diethylene glycol.
45. An electrolyte according to claim 25 which comprises poly-2-hydroxyethylmethacrylate, ethylene glycol, ammonium adipate, ammonium glutarate, tetraethyleneglycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
46. An electrolyte according to claim 25 which comprises poly-2-hydroxyethylmethacrylate, ethylene glycol, ammonium adipate, potassium azelate, tetraethyleneglycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
47. An electrolyte according to claims 25, 28, 44, 45 or 46 further comprising mechanical separator means into which said electrolyte is impregnated.
48. An electrolyte according to claim 47 wherein said separator means is selected from the group consisting of Kraft paper, gauze fabric, porous polypropylene and porous polyethylene.
49. A method for forming an elastomeric electrolyte for use in a low volume, high capacity storage device comprising an electrolytic capacitor, said method comprising the steps of: forming a liquid prepolymer electrolyte mixture by combining at least two salts with a polymerizable solvent; impregnating said liquid prepolymer electrolyte mixture into a capacitor element comprising at least one anode layer, at least one cathode layer and mechani- cal separator means disposed therebetween; and curing said liquid prepolymer electrolyte mixture to polymerize and crosslink said solvent and thereby to form said electrolyte.
50. A method according to claim 49 wherein the molar concentrations of said at least two salts are substantially equal.
51. A method according to claim 49 wherein said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids.
52. A method according to claim 51 wherein the molar concentrations of said at least two salts are substantially equal.
53. A method according to claim 52 wherein said at least two salts are ammonium adipate and ammonium glutarate.
54. A method according to claim 52 wherein said at least two salts are ammonium adipate and potassium azelate.
55. A method according to claim 49 wherein said polymerizable solvent comprises (a) a polymerizable component and (b) a plasticizer comprising a liquid of low molecular weight in which said at least two salts are soluble.
56. A method according to claim 55 wherein said plasticizer is selected from the group consisting of ethylene glycol, polyethylene glycol 400, propylene carbonate, dimethyl forma ide, dimethylsulfoxide and diethylene glycol.
57. A method according to claim 56 wherein said plasticizer is ethylene glycol.
58. A method according to claim 55 wherein said polymerizable solvent further comprises water in an amount not less than about 4% by weight of said electrolyte.
59. A method according to claim 58 wherein said capacitor is of the high voltage type, and wherein the amount of water does not exceed about 15% by weight of said electrolyte.
60. A method according to claim 58 wherein said capacitor is of the low voltage type, and wherein the amount of water does not exceed about 50% by weight of said electrolyte.
61. A method according to claims 58, 59 or 60 wherein the amount of water is about 6% by weight of said electrolyte.
62. A method according to claim 55 wherein said poly- merizable component is a solvent for said at least two salts.
63. A method according to claim 62 wherein said polymerizable component comprises at least one compound chosen from the group consisting of monomers that upon polymerization will yield the corresponding polymers from the group consisting of polyvinylpyrrolidinone , polyviny lsul f onic acid, polyhydroxyethylacrylate , polyhydroxyethylmethacrylate , polymers of the general structure
-(-CH2-CR*R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)n-H or of the type -CO-0-(-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof.
64. A method according to claim 55 wherein said polymerizable solvent further comprises a crosslinking agent.
65. A method according to claim 64 wherein said crosslinking agent comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds .
66. A method according to claim 65 wherein said crosε- linking agent is tetraethyleneglycol diacrylate.
67. A method according to claim 55 wherein the molar concentrations of said at least two salts are substantially equal and said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transj- tion metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids, and wherein said polymerizable solvent comprises (a) a polymerizable component in which said at least two salts are soluble and which comprises at least one compound chosen from the group consisting of monomers that upon polymerization will yield the corresponding polymers from the group consisting of polyvinyl- pyrrolidinone, polyvinylsulfonic acid, polyhydroxyethylacry- late, polyhydroxyethylmethacrylate, polymers of the general structure
-(-CH2-CR1R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof, (b) water in an amount between about 4% and about 50% by weight of said electrolyte, (c) a crosslinking agent which comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds, and (d) a plasticizer in which said at least two salts are soluble and which is chosen from the group consisting of ethylene glycol, polyethyl-
UBSTTΓUTE SHEET Rule 26) ene glycol 400, propylene carbonate, dimethyl formamide, dimethylsulfoxide and diethylene glycol.
68. A method according to claim 49 wherein said liquid prepolymer electrolyte mixture comprises 2-hydroxyethylmeth- acrylate, ethylene glycol, ammonium adipate, ammonium glutarate, tetraethyleneglycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
69. A method according to claim 49 wherein said liquid prepolymer electrolyte mixture comprises 2-hydroxyethylmetha- crylate, ethylene glycol, ammonium adipate, potassium azelate, tetraethyleneglycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
70. A method according to claims 49, 52, 67, 68 or 69 wherein said separator means is selected from the group consisting of Kraft paper, gauze fabric, porous polypropylene and porous polyethylene.
71. A method for construction of a low volume, high capacity storage device comprising an electrolytic capacitor having an elastomeric electrolyte, said method comprising the steps of: forming a liquid prepolymer electrolyte mixture by combining at least two salts with a polymerizable solvent; assembling a capacitor element by disposing mechanical separator means between at least one anode layer and at least one cathode layer; impregnating said capacitor element with said liquid prepolymer electrolyte mixture; and curing said liquid prepolymer electrolyte mixture to polymerize and crosslink said solvent and form said electrolyte, thereby to form said capacitor.
72. A method according to claim 71 wherein the molar concentrations of said at least two salts are substantially equal.
73. A method according to claim 71 wherein said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids.
74. A method according to claim 73 wherein the molar concentrations of said at least two salts are substantially equal.
75. A method according to claim 74 wherein said at least two salts are ammonium adipate and ammonium glutarate.
76. A method according to claim 74 wherein said at least two salts are ammonium adipate and potassium azelate.
77. A method according to claim 71 wherein said polymerizable solvent comprises (a) a polymerizable component and (b) a plasticizer comprising a liquid of low molecular weight in which said at least two salts are soluble.
78. A method according to claim 77 wherein said plasticizer is selected from the group consisting of ethylene glycol, polyethylene glycol 400, propylene carbonate, dimethyl formamide, di ethylsulfoxide and diethylene glycol.
79. A method according to claim 78 wherein said plasti- cizer is ethylene glycol.
80. A method according to claim 77 wherein said polymerizable solvent further comprises water in an amount not less than about 4% by weight of said electrolyte.
81. A method according to claim 80 wherein said capacitor is of the high voltage type, and wherein the amount of water does not exceed about 15% by weight of said electrolyte.
82. A method according to claim 80 wherein said capacitor is of the low voltage type, and wherein the amount of water does not exceed about 50% by weight of said electrolyte.
83. A method according to claims 80, 81 or 82 wherein the amount of water is about 6% by weight of said electrolyte.
84. A method according to claim 77 wherein said polymerizable component is a solvent for said at least two salts.
85. A method according to claim 84 wherein said poly- merizable component comprises at least one compound chosen from the group consisting of monomers that upon polymerization will yield the corresponding polymers from the group consisting of polyvinylpyrrolidinone, polyvinylsulfonic acid, polyhydroxy- ethylacrylate, polyhydroxyethylmethacrylate, polymers of the general structure
-(-CH2-CR*R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof.
86. A method according to claim 77 wherein said poly- merizable solvent further comprises a crosslinking agent.
87. A method according to claim 86 wherein said cross- linking agent comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds.
88. A method according to claim 87 wherein said cross- linking agent is tetraethyleneglycol diacrylate.
89. A method according to claim 77 wherein the molar concentrations of said at least two salts are substantially equal and said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids, and wherein said polymerizable solvent comprises (a) a polymerizable component in which said at least two salts are soluble and which comprises at least one compound chosen from the group consisting of monomers that upon polymerization will yield the corresponding polymers from the group consisting of polyvinylpyrrolidinone, polyvinylsulfonic acid, polyhydroxyethyl- acrylate, polyhydroxyethylmethacrylate, polymers of the general structure
-(-CH2-CR1R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof, (b) water in an amount between about 4% and about 50% by weight of said electrolyte, (c) a crosslinking agent which comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds, and (d) a plasticizer in which said at least two salts are soluble and which is chosen from the group consisting of ethylene glycol, polyethylene glycol 400, propylene carbonate, dimethyl for amide, dimethylsulfoxide and diethylene glycol.
90. A method according to claim 71 wherein said liquid prepolymer electrolyte mixture comprises 2-hydroxyethylmethacrylate, ethylene glycol, ammonium adipate, ammonium glutarate , tetraethyleneglycol diacrylate and water in an amount compris- ing about 6% by weight of said electrolyte.
91. A method according to claim 71 wherein said liquid prepolymer electrolyte mixture comprises 2-hydroxyethyl- ethacrylate, ethylene glycol, ammonium adipate, potassium azelate, tetraethyleneglycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
92. A method according to claims 71, 74, 89, 90 or 91 wherein said separator means is selected from the group consisting of Kraft paper, gauze fabric, porous polypropylene and porous polyethylene.
93. A method for construction of a low volume, high capacity storage device comprising an electrolytic capacitor having at least one anode, at least one cathode and an elastomeric electrolyte disposed therebetween, said method comprising the steps of: forming a liquid prepolymer electrolyte mixture by combining at least two salts with a polymerizable solvent ; coating said at least one anode with said liquid prepolymer electrolyte mixture; curing said liquid prepolymer electrolyte mixture to polymerize and crosslink said solvent and thereby to form a layer of said electrolyte on said anode; disposing said at least one cathode adjacent that surface of said layer of said electrolyte that is directed away from said at least one anode; and assembling said at least one anode and said at least one cathode to one another in facing relationship, thereby to form said capacitor.
94. A method according to claim 93 wherein the molar concentrations of said at least two salts are substantially equal.
95. A method according to claim 93 wherein said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids.
96. A method according to claim 95 wherein the molar concentrations of said at least two salts are substantially equal.
97. A method according to claim 96 wherein said at least two salts are ammonium adipate and ammonium glutarate.
98. A method according to claim 96 wherein said at least two salts are ammonium adipate and potassium azelate.
99. A method according to claim 93 wherein said polymerizable solvent comprises (a) a polymerizable component and (b) a plasticizer comprising a liquid of low molecular weight in which said at least two salts are soluble.
100. A method according to claim 99 wherein said plasticizer is selected from the group consisting of ethylene glycol, polyethylene glycol 400, propylene carbonate, dimethyl forma ide, dimethylsulfoxide and diethylene glycol.
101. A method according to claim 100 wherein said plasticizer is ethylene glycol.
102. A method according to claim 99 wherein said polymerizable solvent further comprises water in an amount not less than about 4% by weight of said electrolyte.
103. A method according to claim 102 wherein said capacitor is of the high voltage type, and wherein the amount of water does not exceed about 15% by weight of said electrolyte.
104. A method according to claim 102 wherein said capacitor is of the low voltage type, and wherein the amount of water does not exceed about 50% by weight of said electrolyte .
105. A method according to claims 102, 103 or 104 wherein the amount of water is about 6% by weight of said electrolyte.
106. A method according to claim 100 wherein said polymerizable component is a solvent for said at least two salts.
107. A method according to claim 106 wherein said polymerizable component comprises at least one compound chosen from the group consisting of monomers that upon polymerization will yield the corresponding polymers from the group consisting of polyvinylpyrrolidinone, polyvinylsulfonic acid, polyhydroxy- ethylacrylate, polyhydroxyethylmethacrylate, polymers of the general structure
-(-CH2-CR*R2-)-
where R1 is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof.
108. A method according to claim 99 wherein said poly- merizable solvent further comprises a crosslinking agent.
109. A method according to claim 108 wherein said crosslinking agent comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds .
110. A method according to claim 109 wherein said cross- linking agent is tetraethyleneglycol diacrylate.
111. A method according to claim 99 wherein the molar concentrations of said at least two salts are substantially equal and said at least two salts are selected from the group consisting of the alkali metal, alkaline earth metal, transition metal, ammonium, substituted ammonium, lead, tin, zinc and cadmium salts of mono-, di-, tri- and tetrabasic acids, and wherein said polymerizable solvent comprises (a) a polymeriz- able component in which said at least two salts are soluble and which comprises at least one compound chosen from the group consisting of monomers that upon polymerization will yield the corresponding polymers from the group consisting of polyvinyl- pyrrolidinone, polyvinylsulfonic acid, polyhydroxyethy1- acrylate, polyhydroxyethylmethacrylate, polymers of the general structure
-(-CH2-CR*R2-)-
where R is an alkyl group or hydrogen and R2 is a group of the type -(-CH2CHR30-)n-H or of the type -CO-O- (-CH2CHR30-) n-H where n=0 to 20 and R3 is H or CH3, and copolymers thereof, (b) water in an amount between about 4% and about 50% by weight of said electrolyte, (c) a crosslinking agent which comprises a difunctional monomer selected from the group consisting of divinyl, diacrylate and dialkacrylate compounds, and (d) a plasticizer in which said at least two salts are soluble and which is chosen from the group consisting of ethylene glycol , polyethylene glycol 400, propylene carbonate, dimethyl formamide, dimethylsulfoxide and diethylene glycol.
112. A method according to claim 93 wherein said liquid prepolymer electrolyte mixture comprises 2-hydroxyethyImethacrylate, ethylene glycol, ammonium adipate, ammonium glutarate, tetraethyleneglycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.
113. A method according to claim 93 wherein said liquid prepolymer electrolyte mixture comprises 2-hydroxyethy1- methacrylate, ethylene glycol, ammonium adipate, potassium azelate, tetraethyleneglycol diacrylate and water in an amount comprising about 6% by weight of said electrolyte.