Processing

Please wait...

Settings

Settings

Goto Application

1. WO2021121168 - QUATERNARY POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE, AND BATTERY

Publication Number WO/2021/121168
Publication Date 24.06.2021
International Application No. PCT/CN2020/135883
International Filing Date 11.12.2020
IPC
H01M 4/505 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
36Selection of substances as active materials, active masses, active liquids
48of inorganic oxides or hydroxides
50of manganese
505of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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 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 4/131
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 4/505
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
48of inorganic oxides or hydroxides
50of manganese
505of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525
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
48of inorganic oxides or hydroxides
52of nickel, cobalt or iron
525of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants
  • 蜂巢能源科技有限公司 SVOLT ENERGY TECHNOLOGY COMPANY LIMITED [CN]/[CN]
Inventors
  • 白艳 BAI, Yan
  • 张树涛 ZHANG, Shutao
  • 潘海龙 PAN, Hailong
  • 王壮 WANG, Zhuang
Agents
  • 北京康信知识产权代理有限责任公司 KANGXIN PARTNERS, P.C.
Priority Data
201911316650.619.12.2019CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) QUATERNARY POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE, AND BATTERY
(FR) MATÉRIAU D'ÉLECTRODE POSITIVE QUATERNAIRE, ÉLECTRODE POSITIVE ET BATTERIE
(ZH) 四元正极材料、正极、电池
Abstract
(EN) A quaternary positive electrode material, a positive electrode, and a battery. The general chemical structure of the quaternary positive electrode material is: Li xNi aCo bMn cAl dM yO 2, where 1 ≤ x ≤ 1.05, 0 < y ≤ 0.025, 0.3 ≤ a ≤ 0.95, 0.03 ≤ b ≤ 0.1, 0.01 ≤ c ≤ 0.05, 0.01 ≤ d ≤ 0.05, and a + b + c + d = 1; M is a dopant, and M is one of or a plurality of, Zr, Al, B, Ti, Mg, Nb, Ba, Si, P, W, Sr, and F. The quaternary positive electrode material has an α-NaFeO2 crystal structure, and the space group of an X-ray diffraction pattern of the quaternary positive electrode material is R-3m, and the relationship between a unit cell parameter c of an axis c and a unit cell parameter a of an axis a satisfies: c/a > 4.943. In this way, the dopant can improve the structural stability of the quaternary positive electrode material, and the quaternary positive electrode material has a better layered crystal structure, which can improve the cyclic stability and thermal stability of a battery using the quaternary positive electrode material, and improve the battery specific capacity and life cycle of the battery.
(FR) Matériau d'électrode positive quaternaire, électrode positive et batterie. La structure chimique générale du matériau d'électrode positive quaternaire est : Li xNi aCo bMn cAl dM yO 2, où 1 ≤ x ≤ 1,05, 0 < y ≤ 0,025, 0,3 ≤ a ≤ 0,95, 0,03 ≤ b ≤ 0,1, 0,01 ≤ c ≤ 0,05, 0,01 ≤ d ≤ 0,05, et a + b + c + d = 1 ; M est un dopant et M est un élément ou une pluralité d'éléments parmi Zr, Al, B, Ti, Mg, Nb, Ba, Si, P, W, Sr et F. Le matériau d'électrode positive quaternaire a une structure cristalline α-NaFeO2 et le groupe spatial d'un modèle de diffraction de rayons X du matériau d'électrode positive quaternaire est R-3m, et la relation entre un paramètre cellulaire unitaire c d'un axe c et un paramètre cellulaire unitaire a d'un axe a satisfait la relation : c/a > 4,943. De cette manière, le dopant permet d'améliorer la stabilité structurelle du matériau d'électrode positive quaternaire, et le matériau d'électrode positive quaternaire a une meilleure structure cristalline stratifiée, ce qui permet d'améliorer la stabilité cyclique et la stabilité thermique d'une batterie à l'aide du matériau d'électrode positive quaternaire, et d'améliorer la capacité spécifique de la batterie et le cycle de vie de la batterie.
(ZH) 一种四元正极材料、正极、电池,四元正极材料的化学结构通式为:Li xNi aCo bMn cAl dM yO 2,其中,1≤x≤1.05,0<y≤0.025,0.3≤a≤0.95,0.03≤b≤0.1,0.01≤c≤0.05,0.01≤d≤0.05,且a+b+c+d=1;M为掺杂剂,M包括选自Zr、Al、B、Ti、Mg、Nb、Ba、Si、P、W、Sr、F中的一种或多种;四元正极材料具有α-NaFeO 2型晶体结构,四元正极材料的X-射线衍射图案的空间群为R-3m,c轴的晶胞参数c和a轴的晶胞参数a之间的关系满足:c/a>4.943。由此,掺杂剂可以较好地提高该四元正极材料的结构稳定性,且该四元正极材料具有较好的层状晶体结构,可以提高使用该四元正极材料的电池的循环稳定性和热稳定性,提高该电池的电池比容量和循环寿命。
Related patent documents
Latest bibliographic data on file with the International Bureau