Processing

Please wait...

Settings

Settings

Goto Application

1. WO2007094644 - PREPARATION METHOD OF LITHIUM-METAL COMPOSITE OXIDES

Publication Number WO/2007/094644
Publication Date 23.08.2007
International Application No. PCT/KR2007/000851
International Filing Date 16.02.2007
IPC
C01D 15/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
15Lithium compounds
CPC
C01G 45/1228
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
1228of the type [MnO2]n- , e.g. LiMnO2, Li[MxMn1-x]O2
C01G 51/50
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
51Compounds of cobalt
40Cobaltates
42containing alkali metals, e.g. LiCoO2
44containing manganese
50of the type [MnO2]n- , e.g. Li(CoxMn1-x)O2, Li(MyCoxMn1-x-y)O2
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 2002/72
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
72by d-values or two theta-values, e.g. as X-ray diagram
C01P 2002/74
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
74by peak-intensities or a ratio thereof only
C01P 2002/86
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
80defined by measured data other than those specified in group C01P2002/70
86by NMR- or ESR-data
Applicants
  • LG CHEM, LTD. [KR]/[KR] (AllExceptUS)
  • HANWHA CHEMICAL CORPORATION [KR]/[KR] (AllExceptUS)
  • CHANG, Sung-Kyun [KR]/[KR] (UsOnly)
  • BANG, Eui-Yong [KR]/[KR] (UsOnly)
  • JANG, Min-Chul [KR]/[KR] (UsOnly)
  • CHOY, Sang-Hoon [KR]/[KR] (UsOnly)
  • LEE, Ki-Young [KR]/[KR] (UsOnly)
  • MYEONG, Wan-Jae [KR]/[KR] (UsOnly)
  • SONG, Kyu-Ho [KR]/[KR] (UsOnly)
  • LEE, Joo-Hyeong [KR]/[KR] (UsOnly)
  • HAHN, Young-Sik [KR]/[KR] (UsOnly)
  • CHO, Myung-Ho [KR]/[KR] (UsOnly)
  • LEE, Yong-Tae [KR]/[KR] (UsOnly)
Inventors
  • CHANG, Sung-Kyun
  • BANG, Eui-Yong
  • JANG, Min-Chul
  • CHOY, Sang-Hoon
  • LEE, Ki-Young
  • MYEONG, Wan-Jae
  • SONG, Kyu-Ho
  • LEE, Joo-Hyeong
  • HAHN, Young-Sik
  • CHO, Myung-Ho
  • LEE, Yong-Tae
Agents
  • HAM, Hyun-Kyung
Priority Data
10-2006-001584917.02.2006KR
Publication Language English (EN)
Filing Language Korean (KO)
Designated States
Title
(EN) PREPARATION METHOD OF LITHIUM-METAL COMPOSITE OXIDES
(FR) PROCÉDÉ DE PRÉPARATION D'OXYDES COMPOSITES MÉTAL/LITHIUM
Abstract
(EN)
Disclosed is a method for preparing a lithium-metal composite oxide, the method comprising the steps of: (a) mixing an aqueous solution of one or more transition metal- containing precursor compounds with an alkalifying agent and a lithium precursor compound to precipitate hydroxides of the transition metals; (b) mixing the mixture of step (a) with water under supercritical or subcritical conditions to synthesize a lithium-metal composite oxide, and drying the lithium-metal composite oxide; and (c) subjecting the dried lithium-metal composite oxide either to calcination or to granulation and then calcination. Also disclosed are an electrode comprising the lithium-metal composite oxide, and an electrochemical device comprising the electrode. In the disclosed invention, a lithium-metal composite oxide synthesized based on the prior supercritical hydrothermal synthesis method is subjected either to calcination or to granulation and then calcination. Thus, unlike the prior dry calcination method or wet precipitation method, a uniform solid solution can be formed and the ordering of metals in the composite oxide can be improved. Accordingly, the lithium- metal composite oxide can show crystal stability and excellent electrochemical properties.
(FR)
L'invention concerne un procédé de préparation d'un oxyde composite métal/lihtium. Ce procédé comprend les étapes consistant à: a) mélanger une solution aqueuse comprenant des composés précurseurs contenant un métal de transition et un composé précurseur de lithium, à l'aide d'un agent alkylant, pour faire précipiter le métal de transition en hydroxydes de métal de transition; b) mélanger le mélange de l'étape a) à de l'eau, dans des conditions supercritiques ou sous-critiques, pour synthétiser un oxyde composite métal/lithium, et faire sécher cet oxyde composite métal/lithium; et c) soumettre l'oxyde composite métal/lithium séché soit à une calcination, ou à une granulation, puis à une calcination. L'invention concerne également une électrode comprenant l'oxyde composite métal/lithium susmentionné et un dispositif électrochimique comprenant cette électrode. Dans l'invention, un oxyde composite métal/lithium synthétisé selon le procédé de synthèse hydrothermique supercritique susmentionné est soumis soit à une calcination, ou à une granulation, puis à une calcination. Ainsi, contrairement au procédé de calcination à sec susmentionné ou à un procédé de précipitation humide, une solution solide uniforme peut être formée, et l'organisation des métaux de l'oxyde composite peut être améliorée. Par conséquent, l'oxyde composite métal/lithium peut présenter une bonne stabilité cristalline et d'excellentes propriétés électrochimiques.
Latest bibliographic data on file with the International Bureau