Polymer electrolyte, lithium secondary battery using same, and method for manufacturing lithium secondary battery

一种锂二次电池、聚合物的技术，应用在电解质蓄电池制造、非水电解质蓄电池、二次电池等方向，能够解决离子传导度下降、气孔度低、厚度厚等问题，达到提高离子传导度、抑制界面电阻的增加、机械特性优秀的效果

Active Publication Date: 2015-09-16
AMOGREENTECH CO LTD
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  • Claims
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Problems solved by technology

[0009] The manufacturing method of the above-mentioned lithium ion polymer battery suffers from low porosity with the use of a non-woven fabric separation membrane formed of polyethylene (PE) or polypropylene (PP), and ion conductivity due to the thick thickness of the coating layer. falling problem

Method used

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  • Polymer electrolyte, lithium secondary battery using same, and method for manufacturing lithium secondary battery
  • Polymer electrolyte, lithium secondary battery using same, and method for manufacturing lithium secondary battery
  • Polymer electrolyte, lithium secondary battery using same, and method for manufacturing lithium secondary battery

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Embodiment Construction

[0039] By referring to the detailed description below with reference to the accompanying drawings, the above-mentioned purpose, features, and advantages can be clarified more clearly, so that those skilled in the art to which the present invention pertains can more easily implement the technical idea of ​​the present invention.

[0040] In addition, in describing the present invention, if it is judged that the detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

[0041] Hereinafter, in this specification, a polymer electrolyte means that a porous nanofibrous web (electrolyte matrix) as a porous separation membrane is assembled inside a casing together with a positive electrode and a negative electrode, and a gel-forming polymer is injected into the casing. The organic electrolyte solution of the monomer and the polymerization initiator is used to carry ...

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Abstract

The present invention relates to a polymer electrolyte, a lithium secondary battery using the same, and a method for manufacturing the lithium secondary battery, wherein: an electrode assembly is formed by using a porous nanofiber web as an electrolyte matrix; an organic electrolyte having a mixture of a gel polymer-forming monomer and a polymerization initiator is injected, and a gel polymer electrolyte is formed by polymerization; and the porous nanofiber web is maintained in a web form such that stability can be increased by preventing a short circuit between a cathode and an anode. The polymer electrolyte, according to the present invention, comprises: the porous nanofiber web which is provided with a plurality of nanofibers; and a gel polymer portion which is impregnated into the porous nanofiber web, wherein the gel polymer portion is formed by polymerizing the gel polymer-forming monomer after a non-aqueous organic solvent, a solute of lithium salt, and the organic electrolyte having the gel polymer-forming monomer and the polymerization initiator have been impregnated into the porous nanofiber web.

Description

technical field [0001] The present invention relates to a polymer electrolyte, a lithium secondary battery using the same and a preparation method thereof, in particular to the following polymer electrolyte, a lithium secondary battery using the same and a preparation method thereof, by impregnating a gel in a porous nanofibrous web Polymer formation uses the polymerization reaction of monomers to form gel polymer electrolytes, which can prevent short circuits between positive and negative electrodes by means of porous nanofibrous networks. Background technique [0002] Conventionally, as an electrolyte of a lithium secondary battery, an electrolyte in which a non-aqueous electrolyte solution is impregnated into a membrane having pores called a separator is generally used. Recently, lithium secondary batteries (polymer batteries) using polymer electrolytes made of polymers have attracted more attention than such liquid electrolytes. [0003] Such a polymer battery uses a ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M2/16H01M10/052H01M10/058H01M50/403H01M50/417H01M50/426H01M50/429H01M50/431H01M50/434H01M50/44H01M50/451H01M50/454H01M50/457H01M50/489H01M50/491
CPCH01M10/052H01M10/0565H01M10/058H01M50/431H01M50/44H01M50/489H01M50/417H01M50/451H01M50/403H01M50/491H01M50/426H01M50/434H01M50/429H01M50/454H01M50/457H01B1/122Y02E60/10Y02P70/50H01M10/0525H01M2300/0085
Inventor 崔元吉张朱希孙镕旭卢承润徐寅踊
Owner AMOGREENTECH CO LTD
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