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1. WO2008048716 - NANOSTRUCTURED METAL OXIDES COMPRISING INTERNAL VOIDS AND METHODS OF USE THEREOF

Publication Number WO/2008/048716
Publication Date 24.04.2008
International Application No. PCT/US2007/070553
International Filing Date 06.06.2007
IPC
H01F 1/00 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
CPC
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
C01B 33/12
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
33Silicon; Compounds thereof
113Silicon oxides; Hydrates thereof
12Silica; Hydrates thereof, e.g. lepidoic silicic acid
C01G 1/02
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
1Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
02Oxides
C01G 19/02
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
19Compounds of tin
02Oxides
C01P 2004/64
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
60Particles characterised by their size
64Nanometer sized, i.e. from 1-100 nanometer
C01P 2006/40
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2006Physical properties of inorganic compounds
40Electric properties
Applicants
  • CORNELL RESEARCH FOUNDATION, INC. [US]/[US] (AllExceptUS)
  • ARCHER, Lynden, A. [US]/[US] (UsOnly)
  • LOU, Xiong, Wen [CN]/[US] (UsOnly)
Inventors
  • ARCHER, Lynden, A.
  • LOU, Xiong, Wen
Agents
  • DAVITZ, Michael, A.
Priority Data
60/804,03106.06.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NANOSTRUCTURED METAL OXIDES COMPRISING INTERNAL VOIDS AND METHODS OF USE THEREOF
(FR) OXYDES MÉTALLIQUES NANOSTRUCTURÉS COMPRENANT DES VIDES INTERNES, ET LEURS PROCÉDÉS D'UTILISATION
Abstract
(EN)
The present invention relates to nano structures of metal oxides having a nanostructured shell (or wall), and an internal space or void. Nanostructures may be nanoparticles, nanorod/belts/arrays, nanotubes, nanodisks, nanoboxes, hollow nanospheres, and mesoporous structures, among other nanostructures. The nanostructures are composed of polycrystalline metal oxides such as SnO2. The nanostructures may have concentric walls which surround the internal space of cavity. There may be two or more concentric shells or walls. The internal space may contain a core such ferric oxides or other materials which have functional properties. The invention also provides for a novel, inexpensive, high-yield method for mass production of hollow metal oxide nanostructures. The method may be template free or contain a template such as silica. The nanostructures prepared by the methods of the invention provide for improved cycling performance when tested using rechargeable lithium- ion batteries.
(FR)
La présente invention concerne des nanostructures d'oxydes métalliques ayant une coquille (ou paroi) nanostructurée, et un espace ou un vide interne. Les nanostructures peuvent être des nanoparticules, des réseaux de nanotiges/nanoceintures, des nanotubes, des nanodisques, des nanoboîtes, des nanosphères creuses, et de structures mésoporeuses, parmi d'autres nanostructures. Les nanostructures se composent d'oxydes métalliques polycristallins tels que le SnO2. Les nanostructures peuvent avoir des parois concentriques qui entourent l'espace interne de la cavité. Il peut y avoir deux coquilles ou parois concentriques ou plus. L'espace interne peut contenir un noyau, tel que des oxydes ferriques ou d'autres matériaux qui ont des propriétés fonctionnelles. L'invention concerne également un nouveau procédé peu coûteux à haut rendement pour la production en masse de nanostructures d'oxydes métalliques creux. Le procédé peut être sans modèle, ou peut contenir un modèle, tel que la silice. Les nanostructures préparées par les procédés de l'invention offrent une meilleure performance de fonctionnement par cycle, lorsqu'elles sont testées en utilisant des batteries lithium-ion rechargeables.
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