Powder-based electrode forming method

A molding method and powder technology, applied in the field of powder-based electrode molding, can solve the problems of low production efficiency, large energy consumption, affecting the performance of electrochemical devices, etc., and achieve short mixing time, good uniformity and high efficiency. Effect

Active Publication Date: 2012-08-08
GMCC ELECTRONICS TECH WUXI CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned shortcomings such as solvent residues affecting the performance of electrochemical devices, low production efficiency, and high energy consumption, the technical problem to be solved in the presen

Method used

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Embodiment Construction

[0036] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0037] Such as figure 1 As shown, a powder-based electrode forming method includes the following steps:

[0038] (1) Select activated carbon YP50 from Kuraray Company of Japan as the powder active material, select Super P from Temico Company as the powder conductive agent, and select DuPont Company’s polytetrafluoroethylene as the powder binder. Three kinds of powders The mass ratio is 80:5:15;

[0039](2) Add the powder weighed in step (1) to the three-dimensional mixer for the first step of mixing, so that various powders are evenly distributed, the mixing speed is 30 rpm, and the processing time is 10 minutes ;

[0040] (3) Transport the p...

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Abstract

The invention relates to a powder-based electrode forming method, which comprises the following steps of: uniformly mixing a powder active substance, a powder conductive agent and a powder adhesive through a three-dimensional powder mixer or a zero-gravity powder mixer; crushing through a low-temperature crusher; performing fibrous extrusion forming through a double-screw extruder or an internal mixer/open mill and then achieving target thickness through hot pressing of a calender; and finally performing three-layer compounding with a current collector of a printing conductive adhesive to form an electrode and performing cold rolling to improve the compaction density. According to the powder-based electrode forming method, a method of assisting machining by using a solvent is abandoned, so that the purity of an electrode material is guaranteed to the greatest extent, no energy waste of a drying process or restriction to the time of the drying process exists in a production process, the cost is reduced, the energy loss is reduced, and the working speed is increased.

Description

technical field [0001] The invention relates to a powder-based electrode forming method. Background technique [0002] With the rapid growth of the world's population and the rapid development of the social economy, resources and energy are increasingly scarce, and the ecological environment is deteriorating. Human beings will be more dependent on clean and renewable new energy sources. In the 21st century, higher requirements are placed on energy storage devices. Electrochemical power sources have been widely used as energy storage devices. With the development of my country's power supply industry, the demand for electrochemical power sources is increasing, and its performance requirements are also getting higher and higher. [0003] Energy density, power density and service life are the three most important indicators of electrochemical energy storage devices. As electrochemical energy storage devices, fuel cells, lithium-ion batteries, lithium-ion capacitors, and superc...

Claims

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Application Information

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IPC IPC(8): H01M4/04H01G9/04B32B37/06B32B37/10B29B7/00B29C47/00B29C43/24
CPCY02E60/12Y02E60/13H01G11/36
Inventor 孙伟王俊华孙孝飞
Owner GMCC ELECTRONICS TECH WUXI CO LTD
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