Lithium secondary battery
First Claim
1. A lithium secondary battery having a cathode, an anode and a polymer electrolyte interposed between the cathode and the anode, wherein the polymer electrolyte is a dried coating of a polymer electrolyte-forming composition comprising a polymer resin, a plasticizer, a filler and a solvent, and wherein the filler is a synthetic zeolite having an affinity for moisture and is at least one selected from the group consisting of aluminosilicate and aluminophosphate.
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Accused Products
Abstract
A composition for forming polymer electrolyte and a lithium secondary battery employing the polymer electrolyte prepared using the composition are provided. The composition for forming polymer solid electrolyte having a polymer resin, a plasticizer, a filler and a solvent, wherein the filler is synthetic zeolite having an affinity for an organic solvent or moisture. Therefore, the mechanical strength and ionic conductivity can be improved by adding synthetic zeolite as a filler when forming polymer electrolyte. Also, use of such polymer electrolyte makes it possible to prepare lithium secondary batteries having good high-current discharge characteristics and excellent discharge capacity characteristics even under repeated charge/discharge conditions.
68 Citations
8 Claims
- 1. A lithium secondary battery having a cathode, an anode and a polymer electrolyte interposed between the cathode and the anode, wherein the polymer electrolyte is a dried coating of a polymer electrolyte-forming composition comprising a polymer resin, a plasticizer, a filler and a solvent, and wherein the filler is a synthetic zeolite having an affinity for moisture and is at least one selected from the group consisting of aluminosilicate and aluminophosphate.
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4. A lithium secondary battery comprising:
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a cathode;
an anode; and
a solid polymer electrolyte interposed between the cathode and the anode, wherein said solid polymer electrolyte includes a polymer resin, a plasticizer, and at least one synthetic zeolite having an affinity for moisture selected from the group consisting of aluminosilicate and aluminophosphate. - View Dependent Claims (5, 6, 7, 8)
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Specification