LITHIUM TITANATE POWER BATTERY AND PREPARATION METHOD FOR LITHIUM TITANATE POWER BATTERY

Title:

LITHIUM TITANATE POWER BATTERY AND PREPARATION METHOD FOR LITHIUM TITANATE POWER BATTERY

Document Type and Number:

WIPO Patent Application WO/2019/114454

Kind Code:

A1

Abstract:

The present invention relates to the technical field of lithium ion secondary batteries, especially to a lithium titanate power battery and a preparation method for the lithium titanate power battery. The preparation method of the lithium titanate power battery comprises the following steps: S1. adding nickel cobalt lithium manganate and/or lithium manganate, a conductive agent, a binder and a lithium-lanthanum-titanium oxide to a solvent so as to form a positive electrode slurry, and coating the resulting positive electrode slurry onto a current collector to obtain a positive electrode plate; S2. adding lithium titanate, a conductive agent, a binder and a lithium-lanthanum-titanium oxide to a solvent so as to form a negative electrode slurry, and coating the resulting negative electrode slurry onto a current collector to obtain a negative electrode plate; and S3. preparing a lithium titanate power battery using the positive electrode plate prepared in step S1 and the negative electrode plate prepared in step S2. The lithium titanate power battery in the present invention improves the diffusion rate of lithium ions during the charging and discharging processes, thereby greatly improving the high power output performance of the battery. The preparation method of the lithium titanate power battery in the present invention has the advantages of having a simple process and being suitable for large-scale production.

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Inventors:

LAI XINHUA (CN)
ZHAN SHIYING (CN)
ZHANG ZHENG (CN)
MA MEIPIN (CN)
LI HAIJUN (CN)

Application Number:

PCT/CN2018/113372

Publication Date:

June 20, 2019

Filing Date:

November 01, 2018

Export Citation:

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Assignee:

YINLONG ENERGY CO LTD (CN)

International Classes:

H01M4/36

Foreign References:

CN107834053A	2018-03-23
CN105932225A	2016-09-07
JP2016213181A	2016-12-15
CN107017388A	2017-08-04
CN102332603A	2012-01-25
CN102299375A	2011-12-28

Attorney, Agent or Firm:

BEIJING XURUN LAW FIRM (CN)

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