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1. WO2021039750 - POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Publication Number WO/2021/039750
Publication Date 04.03.2021
International Application No. PCT/JP2020/031919
International Filing Date 25.08.2020
IPC
H01M 4/525 2010.01
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
H01M 4/36 2006.01
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 4/505 2010.01
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 4/36
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 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
Applicants
  • パナソニック株式会社 PANASONIC CORPORATION [JP]/[JP]
Inventors
  • 後藤 なつみ GOTO Natsumi
  • 神 貴志 KO Takashi
  • 鈴木 慎也 SUZUKI Shinya
  • 新名 史治 NIINA Fumiharu
  • 鶴田 翔 TSURUTA Sho
Agents
  • 徳田 佳昭 TOKUDA Yoshiaki
  • 村山 正人 MURAYAMA Masato
Priority Data
2019-15758230.08.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
(FR) MATÉRIAU ACTIF D'ÉLECTRODE POSITIVE POUR BATTERIES SECONDAIRES À ÉLECTROLYTE NON AQUEUX, ET BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX
(JA) 非水電解質二次電池用正極活物質、及び非水電解質二次電池
Abstract
(EN)
This positive electrode active material for nonaqueous electrolyte secondary batteries is a positive electrode active material that comprises a lithium transition metal composite oxide containing at least 80 mol% Ni with reference to the total number of moles of metal elements excluding Li, and that has B present on the particle surface of at least this composite oxide. Assuming that a particle having a particle diameter larger than the 70% volume-based particle diameter (D70) is denoted as a first particle and a particle having a particle diameter smaller than the 30% volume-based particle diameter (D30) is denoted as a second particle, the mole fraction of B, with reference to the total number of moles of metal elements excluding Li, in the first particle is larger than the mole fraction of B, with reference to the total number of moles of metal elements excluding Li, in the second particle.
(FR)
L'invention concerne un matériau actif d'électrode positive pour batteries secondaires à électrolyte non aqueux qui est un matériau actif d'électrode positive qui comprend un oxyde composite de métal de transition de lithium contenant au moins 80 % en moles de Ni par rapport au nombre total de moles d'éléments métalliques à l'exclusion de Li, et qui a B présent sur la surface de particule d'au moins cet oxyde composite. En supposant qu'une particule ayant un diamètre de particule plus grand que le diamètre de particule en volume de 70 % (D70) est désignée en tant que première particule et une particule ayant un diamètre de particule plus petit que le diamètre de particule en volume de 30 % (D30) est désignée en tant que seconde particule, la fraction molaire de B, en référence au nombre total de moles d'éléments métalliques à l'exclusion de Li, dans la première particule est supérieure à la fraction molaire de B, en référence au nombre total de moles d'éléments métalliques à l'exclusion de Li, dans la seconde particule.
(JA)
この非水電解質二次電池用正極活物質は、Liを除く金属元素の総モル数に対して80モル%以上のNiを含有するリチウム遷移金属複合酸化物を含み、少なくとも当該複合酸化物の粒子表面にBが存在する正極活物質である。粒径が体積基準の70%粒径(D70)より大きな粒子を第1粒子、粒径が体積基準の30%粒径(D30)より小さな粒子を第2粒子としたとき、第1粒子における、Liを除く金属元素の総モル数に対するBのモル分率は、第2粒子における、Liを除く金属元素の総モル数に対するBのモル分率よりも大きい。
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