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1. WO2020134777 - POSITIVE ELECTRODE LITHIUM SUPPLEMENTING MATERIAL, AND MANUFACTURING METHOD THEREFOR AND USE THEREOF

Publication Number WO/2020/134777
Publication Date 02.07.2020
International Application No. PCT/CN2019/120547
International Filing Date 25.11.2019
IPC
H01M 4/36 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
36Selection of substances as active materials, active masses, active liquids
H01M 10/0525 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 4/13 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
CPC
H01M 10/0525
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/446
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
44Methods for charging or discharging
446Initial charging measures
H01M 2004/028
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
026characterised by the polarity
028Positive electrodes
H01M 4/13
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H01M 4/131
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
131Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/133
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
133Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
Applicants
  • 宁德时代新能源科技股份有限公司 CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED [CN]/[CN]
Inventors
  • 王凡 WANG, Fan
  • 刘晓梅 LIU, Xiaomei
  • 郑先锋 ZHENG, Xianfeng
  • 王国宝 WANG, Guobao
Agents
  • 上海光华专利事务所(普通合伙) J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP)
Priority Data
201811605592.426.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) POSITIVE ELECTRODE LITHIUM SUPPLEMENTING MATERIAL, AND MANUFACTURING METHOD THEREFOR AND USE THEREOF
(FR) MATÉRIAU D'AJOUT DE LITHIUM D'ÉLECTRODE POSITIVE, SON PROCÉDÉ DE FABRICATION ET SON UTILISATION
(ZH) 一种正极补锂材料及其制备方法和用途
Abstract
(EN)
The present invention relates to the field of electrochemistry, and in particular to a positive electrode lithium supplementing material, and a manufacturing method therefor and use thereof. The present invention provides a positive electrode lithium supplementing material, comprising a first lithium-containing compound. The first lithium-containing compound is selected from a combination of one or more of compounds represented by formula I; an outer surface of the positive electrode lithium supplementing material comprises a second lithium-containing compound; the activity of a reaction between the second lithium-containing compound and water is lower than that between the first lithium-containing compound and water. The positive electrode lithium supplementing material provided by the present invention can effectively prevent a gelation phenomenon in a paste preparation process, further alleviate the inactivation of a lithium supplementing material caused by a reaction with water and carbon dioxide in the air in a pole piece storage process, improve the manufacturability of a lithium supplementing lithium ion battery to the greatest extent, and improve the energy density and electrochemical performance of the lithium ion battery.
(FR)
La présente invention concerne le domaine de l'électrochimie, et concerne spécifiquement un matériau d'ajout de lithium d'électrode positive, son procédé de fabrication et son utilisation. La présente invention concerne un matériau d'ajout de lithium d'électrode positive, comprenant un premier composé contenant du lithium. Le premier composé contenant du lithium est choisi parmi une combinaison d'un ou plusieurs composés représentés par la formule I ; une surface externe du matériau d'ajout de lithium d'électrode positive comprend un second composé contenant du lithium ; l'activité d'une réaction entre le second composé contenant du lithium et l'eau étant inférieure à celle entre le premier composé contenant du lithium et l'eau. Le matériau d'ajout de lithium d'électrode positive fourni par la présente invention peut empêcher efficacement un phénomène de gélification dans un procédé de préparation de pâte, réduire davantage l'inactivation d'un matériau d'ajout de lithium provoquée par une réaction avec de l'eau et du dioxyde de carbone dans l'air dans un processus de stockage de pièce polaire, améliorer la fabricabilité d'une batterie au lithium-ion à ajout de lithum dans la plus grande mesure, et améliorer la densité d'énergie et les performances électrochimiques de la batterie au lithium-ion.
(ZH)
本发明涉及电化学领域,特别是涉及一种正极补锂材料及其制备方法和用途。本发明提供一种正极补锂材料,包括第一含锂化合物,所述第一含锂化合物选自化学式如式I所示的化合物中的一种或多种的组合,所述正极补锂材料的外层包括第二含锂化合物,所述第二含锂化合物与水反应的活性低于第一含锂化合物。本发明所提供的正极补锂材料可以有效地防止浆料制备过程中的凝胶现象,还能够减缓极片在存放过程中,与空气中的水分及二氧化碳反应而导致补锂材料的失活,很大程度的提升补锂锂离子电池的可制造性,同时提升锂离子电池的能量密度与电化学性能。
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Latest bibliographic data on file with the International Bureau