Method for preparing doped lithium titanate, doped lithium titanate, and lithium ion battery negative electrode material with doped lithium titanate

A doped lithium titanate technology, which is applied in battery electrodes, titanates, chemical instruments and methods, etc., can solve the problems of poor conductivity of lithium titanate and achieve improved conductivity, fast lithium ion migration rate, The effect of improving the magnification performance

Pending Publication Date: 2022-01-11
NORTHERN ALTAIR NANOTECH CO LTD +1
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for preparing doped lithium titanate, doped lithium titanate and lithium ion battery negative electrode material therewith, so as to solve the problem of poor conductivity of lithium titanate prepared in the prior art. bad question

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  • Method for preparing doped lithium titanate, doped lithium titanate, and lithium ion battery negative electrode material with doped lithium titanate
  • Method for preparing doped lithium titanate, doped lithium titanate, and lithium ion battery negative electrode material with doped lithium titanate
  • Method for preparing doped lithium titanate, doped lithium titanate, and lithium ion battery negative electrode material with doped lithium titanate

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[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0021] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish simila...

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Abstract

The invention provides a method for preparing doped lithium titanate, the doped lithium titanate, and a lithium ion battery negative electrode material with the doped lithium titanate. The method for preparing the doped lithium titanate comprises the following steps: taking a mixed solution of polyethylene glycol and water as a hydrolysis solvent of titanyl sulfate; adding titanyl sulfate into a hydrolysis solvent, adding a compound containing metal ions into the hydrolysis solvent, and enabling the metal ions contained in the compound containing the metal ions to participate in hydrolysis reaction of titanyl sulfate to obtain a precursor containing doped metatitanic acid and polyethylene glycol; and mixing the precursor with a lithium source, and carrying out chemical reaction on the precursor and the lithium source to obtain the doped lithium titanate. By adopting the technical scheme provided by the invention, the conductivity of the prepared doped lithium titanate is effectively improved.

Description

technical field [0001] The invention relates to the technical field of preparing lithium titanate, in particular, to a method for preparing doped lithium titanate, doped lithium titanate and a lithium ion battery negative electrode material having the same. Background technique [0002] In the prior art, the raw materials for preparing lithium titanate include lithium source and titanium source, and titanium dioxide is often used as the titanium source in the raw materials required for preparing spinel-structured lithium titanate. The existing titanium dioxide on the market is mostly used in paints, coatings, fine ceramics and other fields, and most of them are pigment-grade rutile titanium dioxide. The process of rutile titanium dioxide is mature and the batch stability is good. Titanium dioxide dedicated to lithium batteries is usually anatase-type, and the market usage of anatase-type titanium dioxide is small, and the process maturity and batch stability are poorer than ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M4/485C01G23/00
CPCH01M4/485H01M4/5825C01G23/003Y02E60/10
Inventor 杨龙奎王荣荣刘喆李倩倩雷磊
Owner NORTHERN ALTAIR NANOTECH CO LTD
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