Gel electrolyte and gel electrolyte battery

A gel electrolyte and electrolyte salt technology, which is applied in the field of gel electrolyte batteries, can solve problems such as insufficient initial charge/discharge efficiency, difficulty in preparing battery capacity, and degradation of cycle performance, and achieve excellent chemical stability and initial charge/discharge efficiency. and the effect of capacity improvement

Inactive Publication Date: 2004-05-26
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, when using a mixture of ethylene carbonate and propylene carbonate as a non-aqueous solvent, if the content of propylene carbonate is large, the low-temperature performance and loading performance are excellent, but the initial charge/discharge effic

Method used

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  • Gel electrolyte and gel electrolyte battery
  • Gel electrolyte and gel electrolyte battery
  • Gel electrolyte and gel electrolyte battery

Examples

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Embodiment Construction

[0018] Describe the embodiments of the present invention

[0019] Figure 1-Figure 3 A structural example of a gel electrolyte battery according to an embodiment of the present invention is shown. Such as image 3 As shown, the gel electrolyte battery 1 includes a strip-shaped positive electrode 2 , a strip-shaped negative electrode 3 disposed opposite to the positive electrode 2 , and a gel electrolyte layer 4 between the positive electrode 2 and the negative electrode 3 . In this gel electrolyte battery 1, a positive electrode 2 and a negative electrode 3 are laminated via a gel electrolyte layer 4, rolled in the longitudinal direction, as figure 2 and image 3 The illustrated rolled electrode body 5 is covered and sealed with a casing film 6 formed of an insulating material. The positive terminal 7 is connected to the positive pole 2 and the negative terminal 8 is connected to the negative pole 3 . The positive terminal 7 and the negative terminal 8 are inserted into ...

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Abstract

The present invention provides a gel electrolyte cell including a non-aqueous electrolytic solution containing lithium-containing electrolyte salt solved in a non-aqueous solvent and made into a gel state by a matrix polymer, and the gel electrolyte contains vinylene carbonate or derivative thereof in the amount not less than 0.05 wt% and not greater than 5 wt%. This gel electrolyte exhibits an excellent chemical stability with the negative electrode, strength, and liquid-retention characteristic. This gel electrolyte enables to obtain a gel electrolyte cell satisfying the cell capacity, cycle characteristic, load characteristic, and low-temperature characteristic.

Description

technical field [0001] The present invention relates to a gel electrolyte as a nonaqueous electrolytic solution containing a lithium-containing electrolyte salt dissolved in a nonaqueous solvent and forming a gel state by a matrix polymer, and a gel electrolyte battery using the gel electrolyte. Background technique [0002] Batteries are becoming more and more important in industry as power sources for portable electronic devices. To reduce the size and weight of the device, the battery should be light in weight and not occupy much space in the device. For this, the most suitable battery is a lithium battery having a large energy density and a large output density. [0003] Among lithium batteries, the most promising are those having great flexibility or moldable shape, or sheet-type batteries having a large area, or thin card-type batteries having a small area. However, in the case of a conventional battery using a metal case as an outer case, it is difficult to manufact...

Claims

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Application Information

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IPC IPC(8): H01M10/052H01M10/36H01M10/0565H01M6/16H01M6/18
CPCY02E60/12H01M10/0565H01M6/164H01M6/168H01M6/181H01M2300/0085H01M10/052Y02E60/10H01M10/0525
Inventor 涩谷真志生畠沢刚信原富太郎柴本悟郎后藤习志
Owner MURATA MFG CO LTD
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