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1. WO2014103211 - POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING SAME

Publication Number WO/2014/103211
Publication Date 03.07.2014
International Application No. PCT/JP2013/007270
International Filing Date 10.12.2013
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
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 4/525 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
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 10/052 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
CPC
C01G 45/1257
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
45Compounds of manganese
12Manganates ; manganites or; permanganates
1221Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof
125of the type[MnO3]n-, e.g. Li2MnO3, Li2[MxMn1-xO3], (La,Sr)MnO3
1257containing lithium, e.g. Li2MnO3, Li2[MxMn1-xO3
C01G 53/50
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
53Compounds of nickel
40Nickelates
42containing alkali metals, e.g. LiNiO2
44containing manganese
50of the type [MnO2]n- , e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2
C01P 2002/50
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
50Solid solutions
C01P 2002/52
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
50Solid solutions
52containing elements as dopants
C01P 2002/76
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
70defined by measured X-ray, neutron or electron diffraction data
76by a space-group or by other symmetry indications
C01P 2002/77
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
70defined by measured X-ray, neutron or electron diffraction data
77by unit-cell parameters, atom positions or structure diagrams
Applicants
  • 三洋電機株式会社 SANYO ELECTRIC CO., LTD. [JP]/[JP]
  • パナソニック株式会社 PANASONIC CORPORATION [JP]/[JP]
Inventors
  • 木下 昌洋 KINOSHITA, Masahiro
  • 夏井 竜一 NATSUI, Ryuichi
  • 名倉 健祐 NAKURA, Kensuke
Agents
  • 特許業務法人YKI国際特許事務所 YKI PATENT ATTORNEYS
Priority Data
2012-28787528.12.2012JP
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 USING SAME
(FR) MATIÈRE ACTIVE D'ÉLECTRODE POSITIVE DESTINÉE À DES BATTERIES RECHARGEABLES À ÉLECTROLYTE NON AQUEUX, ET BATTERIE RECHARGEABLE À ÉLECTROLYTE NON AQUEUX UTILISANT CETTE MATIÈRE
(JA) 非水電解質二次電池用正極活物質及びこれを用いた非水電解質二次電池
Abstract
(EN) A positive electrode active material according to one embodiment of the present invention is a particulate positive electrode active material which is used in a nonaqueous electrolyte secondary battery. This positive electrode active material is characterized by containing an Li2MnO3-LiMO2 solid solution (wherein M represents at least one element selected from among Co, Ni, Fe, Al, Mg, Ti, Cr, Zr, W, B, Nb, Sr, La, Ce, Sm and Mo) and an Ni-containing oxide, and is also characterized in that the ratio of Ni to Mn (Ni/Mn) in the particle surface is higher than the Ni/Mn ratio in the inside of the particle.
(FR) Selon un mode de réalisation, la présente invention se rapporte à une matière active d'électrode positive qui est une matière active d'électrode positive particulaire utilisée dans une batterie rechargeable à électrolyte non aqueux. Cette matière active d'électrode positive est caractérisée en ce qu'elle comprend une solution solide Li2MnO3-LiMO2 (M représentant au moins un élément sélectionné parmi du Co, du Ni, du Fe, de l'Al, du Mg, du Ti, du Cr, du Zr, du W, du B, du Nb, du Sr, du La, du Ce, du Sm et du Mo) ainsi qu'un oxyde contenant du Ni, et elle est également caractérisée en ce que le rapport entre le Ni et le Mn (Ni/Mn) à la surface de la particule est supérieur au rapport Ni/Mn à l'intérieur de la particule.
(JA)  本発明の実施形態の一例である正極活物質は、非水電解質二次電池に用いられる粒子状の正極活物質であって、Li2MnO3-LiMO2固溶体(MはCo、Ni、Fe、Al、Mg、Ti、Cr、Zr、W、B、Nb、Sr、La、Ce、Sm、Moから選択される少なくとも1つ)と、Ni含有酸化物とを含み、粒子表面におけるNiとMnの比率(Ni/Mn)が、粒子内部におけるNi/Mnよりも高いことを特徴とする。
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