CARBON/TITANIUM PHOSPHATE COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR AND USE THEREOF - NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INSTITUTE CO LTD

Title:

CARBON/TITANIUM PHOSPHATE COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR AND USE THEREOF

Document Type and Number:

WIPO Patent Application WO/2021/253714

Kind Code:

A1

Abstract:

Disclosed is a carbon/titanium phosphate composite material and a preparation method therefor and the use thereof. The method comprises: performing a dry ball milling Ⅰ on a lithium source, a titanium source, a phosphorus source and a carbon source to obtain a mixed powder Ⅰ; mixing the mixed powder Ⅰ with an additive aqueous solution and drying same to obtain a mixed material; performing a dry ball milling Ⅱ on the mixed material to obtain a mixed powder Ⅱ; and sintering the mixed powder Ⅱ to obtain the carbon/titanium phosphate composite material. The method is simple in process and easy to operate; in addition, the method can not only ensure that the raw materials are uniformly dispersed when being mixed, but can also reduce the hardness of the material particles after drying same with the additive aqueous solution for dispersion. The whole preparation process is green, environmentally friendly and free of pollution; and the carbon/titanium phosphate composite material prepared by the method has a mass specific capacity of approximately 88 mAh/g when used as the negative electrode of an aqueous lithium ion full battery, and has no obvious attenuation after 100 cycles.

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Inventors:

LI YIFEI (CN)
ZHANG XUFENG (CN)
WU ZHILIAN (CN)

Application Number:

PCT/CN2020/127192

Publication Date:

December 23, 2021

Filing Date:

November 06, 2020

Export Citation:

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Assignee:

NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INSTITUTE CO LTD (CN)

International Classes:

H01M4/62; H01M4/58

Foreign References:

CN111755694A	2020-10-09
KR20200025682A	2020-03-10
CN107732167A	2018-02-23
CN107910514A	2018-04-13
CN110071277A	2019-07-30

Other References:

ZHANG CHENYANG, WEN YUEHUA;ZHAO PENGCHENG;CHENG JIE;QIU JINGYI;SUN YANZHI: "Effect of Organic Carbon Source on Performance of LiTi2（ PO4）3/C Composite Electrodes in Aqueous Solutions", CHEMICAL JOURNAL OF CHINESE UNIVERSITIES, JILIN DAXUE, BEIJING, CN, vol. 41, no. 6, 20 May 2020 (2020-05-20), CN , pages 1352 - 1361, XP055882115, ISSN: 0251-0790, DOI: 10.7503/cjcu20190624

Attorney, Agent or Firm:

PERIODIC LAW FIRM (CN)

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