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Electrode of electrochemical battery, electrochemical battery employing electrode and preparation method of electrochemical battery

A battery electrode and electrochemical technology, applied in the field of electrochemical batteries, can solve problems such as being vulnerable to damage and poor performance of flexible batteries, and achieve the effects of reducing the processing area, increasing energy density, and improving self-discharge performance

Active Publication Date: 2016-01-20
GUANGDONG ZHUGUANG NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the bending process of flexible batteries, the interface inside the battery cell is often its weak link and is easily damaged, which makes the performance of the flexible battery worse; therefore, reducing the number of internal interfaces of the flexible battery as much as possible is a reliable way to improve the performance of the flexible battery. method

Method used

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  • Electrode of electrochemical battery, electrochemical battery employing electrode and preparation method of electrochemical battery
  • Electrode of electrochemical battery, electrochemical battery employing electrode and preparation method of electrochemical battery

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, it is a schematic diagram of the cross-sectional structure of the electrochemical cell corresponding to the present embodiment, and it can be obtained from the figure that the battery of the present invention is divided into two parts, the cell main body 1-1 and the packaging area 2-1 / 2-2; The core main body 1-1, the negative electrode coating 2 is applied to one surface of the negative electrode current collector 1 as the packaging material, and the positive electrode coating 4 is applied to one surface of the positive electrode current collector 3 as the packaging material, and then separated with the separator 5 Laminates; for the packaging area 2-1 / 2-1, it is mainly composed of a water barrier layer (ie, the negative electrode collector 1 and the positive electrode collector 3 as the packaging material) and the sealing layer. In the position of the sealing area, the negative electrode collector 1 and The positive current collector 3 has un...

Embodiment 2

[0047] The difference from Example 1 is that it includes the following steps:

[0048] Initial membrane preparation: apply the above-mentioned positive electrode slurry on an aluminum foil with a thickness of 10 μm to obtain a coating film area with a length of 60 cm and a width of 50 cm, and the width of the empty foil material area is 4 cm to obtain an initial positive electrode sheet; apply the above-mentioned negative electrode slurry On a copper foil with a thickness of 10 μm, a coating area with a length of 60 cm and a width of 50 cm is obtained, and the width of the empty foil area is 4 cm to obtain an initial negative electrode sheet;

[0049] The rest are the same as in Embodiment 1 and will not be repeated here.

Embodiment 3

[0051] The difference from Example 1 is that it includes the following steps:

[0052] Preparation of the initial membrane: apply the above-mentioned positive electrode slurry on an aluminum foil with a thickness of 15 μm to obtain a coating film area with a length of 60 cm and a width of 50 cm, and the width of the empty foil material area is 4 cm to obtain an initial positive electrode sheet; apply the above-mentioned negative electrode slurry On a copper foil with a thickness of 15 μm, a coating area with a length of 60 cm and a width of 50 cm is obtained, and the width of the empty foil area is 4 cm to obtain an initial negative electrode sheet;

[0053] The rest are the same as in Embodiment 1 and will not be repeated here.

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Abstract

The invention belongs to the technical field of flexible devices, and particularly relates to an electrochemical battery. The electrochemical battery comprises a main body region and package regions of the battery, wherein the main body region of the battery comprises an electrochemical battery electrode, an isolating membrane, a counter electrode, an electrolyte and an outer package component; a current collector of the electrode is at least one water-resisting layer in the outer package component; each package region comprises a gap region and a sealing layer of the current collector; each gap region and the current collector of the electrode are taken as a whole; and the current collector of the electrode and the current collector of the counter electrode are adhered to each other by the sealing layers. The electrochemical battery has the advantages that the current collectors act as package materials, so that the number of interfaces of the overall battery is reduced; the flexibility performance of the battery is improved; meanwhile, the energy density of the battery is improved; only the current collector corresponding to a sealing region is subjected to a package auxiliary treatment; the treatment cost can be reduced; the effects on other properties of the battery caused by a package auxiliary treatment layer are reduced; the sealing layers in a three-layer structure are capable of effectively blocking a short circuit between a positive electrode and a negative electrode; and the self-discharge property of the battery is improved.

Description

technical field [0001] The invention belongs to the technical field of electrochemical batteries, and in particular relates to an electrode of an electrochemical battery, an electrochemical battery using the electrode and a preparation method thereof. Background technique [0002] After entering the 21st century, various electronic device products such as mobile phones, notebooks, wearable devices, etc. emerge in an endless stream, which greatly enriches the lives of the majority of users; at the same time, electric vehicles and various energy storage power stations are also rapidly sprouting, developing, and grow. The above high-tech products have a common feature: high-performance, low-cost batteries are required to act as energy storage components. [0003] Existing batteries mainly include primary batteries and secondary batteries; the so-called primary batteries, that is, batteries that cannot be recharged, mainly include carbon-zinc batteries, alkaline batteries, past...

Claims

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Application Information

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IPC IPC(8): H01M4/02H01M4/64H01M2/08H01M10/04H01M50/186H01M50/197
CPCH01M4/02H01M4/64H01M10/04H01M2220/30H01M2220/20H01M50/183Y02E60/10Y02P70/50
Inventor 杨玉洁
Owner GUANGDONG ZHUGUANG NEW ENERGY TECH
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