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Flexible thin layer open electrochemical cell

An electrochemical, open technology, applied in the field of electrochemical cells, which can solve the problems of harmful mercury environment and limited polymer performance.

Inactive Publication Date: 2002-08-07
鲍尔弗雷克斯有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However polymers are limited in their effectiveness and mercury is harmful to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0060] A solution was prepared containing 120 mg (milligrams) of polyvinyl alcohol (a water soluble polymer) and 1680 mg of zinc chloride (a deliquescent material and an electroactive soluble material) in 1.2 ml (milliliters) of water. This solution has a viscous state like glue. A 4.5 cm (centimeter) x 7 cm strip of filter paper is completely wetted with this solution by printing or dipping techniques. A mixture of 300 mg of zinc powder and the above solution was prepared and printed on one side of a paper strip as the negative layer. On the other side was printed a mixture of 250mg of manganese dioxide and 50mg of conductive carbon powder with the above solution, which was used as the positive layer. Current is measured when both sides are used as electrical contact and connected to a load. per cm at 1.7÷1.2 volts 2 (cm2) of 12 microamperes can easily be maintained continuously for five days at room temperature.

example 2

[0062] An open cell was prepared as described above in Example 1 and connected to a voltmeter. As shown in Figure 4, measurements of the voltage produced by the battery at room temperature revealed a pronounced voltage of 1.7÷1.2 volts maintained for 9 consecutive days.

example 3

[0064] A saturated potassium hydroxide solution is prepared and made glue-like by mixing with a water-soluble polymer. Completely wet the porous substance (such as filter paper) with this solution and apply a mixture of the solution and nickel oxide powder on one side of the porous substance to form the positive electrode layer, and apply a similar mixture with cadmium powder on the other side of the porous substance To form the negative layer, a voltage of 1.2 volts was measured by connecting a voltmeter to both sides and a high current was measured when the two layers were in contact on a load. The battery will not dry out when open and can be recharged when desired.

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PUM

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Abstract

A flexible thin layer open liquid state electrochemical cell which can be used as a primary or rechargeable power supply for various miniaturized and portable electrically powered devices of compact design. The cell includes a wet electrolyte, yet maintains a flexible, thin and open configuration, thus devoid of accumulation of gases upon storage. The cell comprising a first layer of insoluble negative pole, a second layer of insoluble positive pole and a third layer of aqueous electrolyte, the third layer being disposed between the first and second layers and including a deliquescent material for keeping the open cell wet at all times; an electroactive soluble material for obtaining required ionic conductivity; and, a watersoluble polymer for obtaining a required viscosity for adhering the first and second layers to the first layer. The electrochemical cell of the present invention is preferably produced using a suitable printing technology.

Description

technical field [0001] This invention relates to electrochemical cells for use as battery power sources by converting chemical energy into electrical energy. In particular, the present invention relates to a primary or rechargeable electrochemical cell for use as a conventional or rechargeable battery that uses a wet electrolyte (eg, liquid) to accomplish the conversion of chemical energy to electrical energy while still maintaining a flexible thin layer and open structure. Background technique [0002] Miniaturized and portable electrical devices with exquisite design, such as cellular phones, sound recording and playback devices, watches, sports and still cameras, liquid crystal displays, electronic calculators, IC cards, temperature sensors, hearing aids, pressure-sensitive buzzers, etc. The ever-increasing development of batteries has created an ever-increasing demand for the delicate thin-layer batteries they need to work. Thus, there is a need for reliable thin-layer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/66A61B5/00A61N1/30B65D51/24H01M4/02H01M4/08H01M4/12H01M4/20H01M4/26H01M4/62H01M6/06H01M6/12H01M6/18H01M6/22H01M6/40H01M6/42H01M6/46H01M6/48H01M8/00H01M10/00H01M10/02H01M10/04H01M10/10H01M10/12H01M10/26H01M10/30H01M50/50
CPCH01M2/16H01M6/48Y02E60/126A61N1/30H01M2300/0002H01M2/0275H01M2/0257H01M10/127H01M6/22A61B5/14532H01M10/0436H01M6/42Y02E60/124B65D51/248H01M2300/0014H01M6/181H01M2/20H01M2300/0085H01M4/621H01M6/12H01M4/02H01M6/40Y10T428/24926Y10T428/24917Y02E60/10H01M50/50Y02P70/50B32B3/00H01M6/00
Inventor 兹维·尼特赞
Owner 鲍尔弗雷克斯有限公司
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