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Method for producing an electrode material

A technology for preparing electrodes and electrode materials, which is applied in the direction of mixing methods, battery electrodes, chemical instruments and methods, etc., can solve time-consuming problems, achieve the effects of reducing the amount of binder, improving performance, and improving conductivity

Pending Publication Date: 2019-07-30
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Depending on the powdery substance, these methods are very time consuming

Method used

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  • Method for producing an electrode material
  • Method for producing an electrode material

Examples

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Embodiment Construction

[0055] figure 1 A method for producing electrode material 1 according to the invention is shown.

[0056] In the mixing device 11 , the powdery active material 9 is preliminarily charged, so that a fluidized layer 15 is obtained. The gas flow 17 flows through the powdered active material 9 in the mixing device 11 from bottom to top.

[0057] Furthermore, a mixture 3 of binder 5 and solvent 7 is sprayed into the fluidized layer 15 of the mixing device 11 . The powdery active material 9 is coated with a binder 5 to obtain coated particles 13 . In the embodiment shown, the coated particles 13 contain not only the binder 5 but also the solvent 7 .

[0058] The solvent 7 is at least partially removed from the coated particles 13 by means of the gas flow 17 , so that particles of the electrode material 1 are obtained.

[0059] figure 2 The coating of powdered active material 9 with binder 5 is schematically shown. The powdery active material 9 is brought into contact with dro...

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Abstract

The invention relates to a method for producing an electrode material (1) comprising the following steps: a. providing a mixture (3) consisting of a binder (5) and a solvent (7); b. pre-adding and stirring a powdered active material (9) in a mixing device (11), wherein the active material preferably contains lithium; c. adding the mixture (3) into the mixing device (11), wherein the powdered active material (9) is coated with the binder (5) so as to obtain coated particles (13); and d. optimally removing the solvent (7) from the coated particles (13) partially so as to obtain particles of theelectrode material (1). Furthermore, the invention relates to a battery and use of the battery.

Description

technical field [0001] The present invention relates to a method for the preparation of electrode materials, the method comprising providing a mixture, precharging and agitating a powdery active material in a mixing device and adding said mixture. Furthermore, the invention relates to batteries comprising said electrode material and to the use of such batteries. Background technique [0002] Lithium-ion batteries are notably characterized by a very high specific energy and an extremely low self-discharge. Lithium-ion batteries have at least one positive electrode and at least one negative electrode (cathode and anode), where lithium ions migrate from one electrode to the other during charging and discharging of the battery. For the transport of lithium ions, so-called lithium ion conductors are required. As the lithium ion conductor, a liquid electrolyte or a solid electrolyte can be used. [0003] Lithium-ion battery packs can be enclosed in packaging. For example, alum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/62B01F3/12
CPCH01M4/366H01M4/621B01F23/511B01F23/51B01F23/53H01M4/139H01M4/62H01M2220/20H01M4/622Y02E60/10
Inventor C.朱斯特D.科赫L.鲍姆盖尔特纳M.巴布林
Owner ROBERT BOSCH GMBH
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