Preparation method for negative electrode of lithium ion battery
A technology for lithium ion batteries and negative electrodes, which is applied to the field of preparation of negative electrodes of lithium ion batteries, can solve the problems of increasing costs, rising prices, cumbersome and delicate chemical synthesis steps, etc., and achieves the effects of cost saving, small capacity attenuation, and excellent electrochemical performance.
Inactive Publication Date: 2018-09-28
崔晓迪
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Problems solved by technology
At present, lithium-ion battery electrodes are still made of inorganic materials, and the rapid consumption of lithium resources leads to price increases, as well as people's higher demand for battery energy density and volume density, which will bring more problems to the future development of lithium-ion batteries. challenges; and the existing chemical synthesis steps for the preparation of lithium-ion battery negative electrodes are cumbersome and delicate, which undoubtedly increases the cost. Therefore, we propose a preparation method for lithium-ion battery negative electrodes
Method used
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Embodiment Construction
[0018] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.
[0019] The present invention provides a first embodiment: a preparation method of a negative electrode of a lithium ion battery, characterized in that: the preparation material of the negative electrode of a lithium ion battery includes: H2BDC@MWCNTs compound, acetylene black, adhesive polytetrafluoroethylene, Ionized water and absolute ethanol;
[0020] Mix deionized water and absolute ethanol with a volume ratio of 1:1, and stir with a glass rod to make it evenly mixed to obtain a mixture of deionized water and absolute ethanol, and then mix H2BDC@MWCNTs complex, acetylene Black and viscous polytetrafluoroethylene are mixed according to the mass ratio of 8:1:1, and then the mixture of deionized water and absolute ethanol is gradually added to the mixture, and a glass rod is used to stir at the same ...
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The invention discloses a preparation method for a negative electrode of a lithium ion battery. Preparation materials of the negative electrode of the lithium ion battery comprise an H2BDC@MWCNTs compound, acetylene black, an adhesive, namely polytetrafluoroethylene, deionized water and absolute ethyl alcohol, wherein the H2BDC@MWCNTs compound is taken as a main material, and the acetylene black is used as the main material, the adhesive, namely polytetrafluoroethylene, the deionized water and the absolute ethyl alcohol are taken as auxiliary materials to prepare the negative electrode of thelithium ion battery. The negative electrode of the lithium ion battery, which is prepared by the preparation method of the invention, has the advantages of excellent electrochemical performance, better rate performance and low capacity fading, and a crystal structure of H2BDC can enable lithium ions to be rapidly separated and embedded; in addition, during a preparation process, the steps are simple, and the cost is saved.
Description
technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a method for preparing a negative electrode of a lithium ion battery. Background technique [0002] Lithium-ion battery: It is a secondary battery (rechargeable battery) that mainly relies on lithium ions to move between the positive and negative electrodes to work. At present, lithium-ion battery electrodes are still made of inorganic materials, and the rapid consumption of lithium resources leads to price increases, as well as people's higher demand for battery energy density and volume density, which will bring more problems to the future development of lithium-ion batteries. Challenges; and the existing chemical synthesis steps for the preparation of negative electrodes for lithium-ion batteries are cumbersome and delicate, which undoubtedly increases the cost. Therefore, we propose a preparation method for negative electrodes for lithium-ion batteries. Conten...
Claims
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IPC IPC(8): H01M4/04H01M4/139H01M10/0525
CPCH01M4/0404H01M4/139H01M10/0525Y02E60/10
Inventor 崔晓迪
Owner 崔晓迪