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Organic-inorganic composite electrolyte membrane and battery therewith

An electrolyte membrane and inorganic composite technology, which is applied in batteries with organic-inorganic composite electrolyte membranes, and in the field of organic-inorganic composite electrolyte membranes, can solve the problems of poor flexibility and low conductivity of organic-inorganic composite electrolyte membranes, and achieve the purpose of inhibiting lithium Effect of dendrite growth, high coating hardness, good electrical conductivity and flexibility

Active Publication Date: 2018-10-23
ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of these technologies can well solve the problems of poor flexibility and low conductivity of organic-inorganic composite electrolyte membranes.

Method used

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  • Organic-inorganic composite electrolyte membrane and battery therewith
  • Organic-inorganic composite electrolyte membrane and battery therewith
  • Organic-inorganic composite electrolyte membrane and battery therewith

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Embodiment 1～32

[0037] An organic-inorganic composite electrolyte membrane, which is composed of a double-layer structure of layer 1 and layer 2 closely combined, layer 1 is prepared with No. 1 slurry, and layer 2 is prepared with No. 2 slurry; No. 1 slurry and No. 2 slurry All materials include the following same ingredients: inorganic solid electrolyte, lithium salt, film-forming agent, conductive lithium ion polymer, plasticizer and solvent; the content of inorganic solid electrolyte in No. 1 slurry>the content of inorganic solid electrolyte in No. 2 slurry , the content of conductive lithium ion polymer in No. 1 slurry < the content of conductive lithium ion polymer in No. 2 slurry. In the subsequent preparation process, only the solvent content will change, and the relative content of other components in layer 1 and layer 2 will not change. That is, the inorganic solid electrolyte is the main component in the No. 1 slurry, and the inorganic solid electrolyte is still the main component i...

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Abstract

The invention discloses an organic-inorganic composite electrolyte membrane having a double layer structure including a first layer and a second layer, wherein each of the first layer and the second layer is prepared from slurry comprising the following same components: an inorganic solid electrolyte, lithium salt, a film forming agent, a conductive lithium ion polymer, a plasticizer, and a solvent; herein, the content of inorganic solid electrolyte in the first layer is higher than that in the second layer, and the content of conductive lithium ion polymer in the first layer is less than thatin the second layer. The invention also discloses a battery having the organic-inorganic composite electrolyte membrane. The membrane has good flexibility and high conductivity, can satisfy differentdemands of a cathode and an anode in a lithium ion battery at the same time, can inhibit growth of lithium dendrites, and improves comprehensive performance of the battery.

Description

technical field [0001] The invention relates to the technical field of electrolyte membranes, specifically an organic-inorganic composite electrolyte membrane; the invention also relates to the field of lithium batteries, specifically a battery with an organic-inorganic composite electrolyte membrane. Background technique [0002] At present, commercial lithium-ion batteries mostly use liquid electrolyte as the medium for positive and negative electrodes to transmit lithium ions, but with the safety requirements of lithium-ion batteries in the application of electric vehicles, the disadvantages of liquid electrolyte are becoming more and more obvious. This is because the liquid electrolyte is easy to react and burn, so it brings great safety hazards to the application of lithium-ion batteries in power trams. In view of the above problems, the use of solid-state lithium-ion electrolytes instead of traditional electrolytes and the preparation of all-solid-state lithium-ion bat...

Claims

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Application Information

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IPC IPC(8): H01M10/056H01M10/0525
CPCH01M10/0525H01M10/056H01M2300/0065H01M2300/0094Y02E60/10
Inventor 许晓雄张计娜林久徐忠伟魏潇博
Owner ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
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