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Title:
INORGANIC OXIDE POWDER FOR USE IN GEL ELECTROLYTE OF BATTERY AND GEL COMPOSITION CONTAINING INORGANIC OXIDE POWDER
Document Type and Number:
WIPO Patent Application WO/2004/062008
Kind Code:
A1
Abstract:
An inorganic oxide powder for use in gel electrolyte of battery, which exhibits an average primary particle diameter of 5 to 40 nm and a possibility of presence of 100 μm or larger agglomerates of 1% or less. Preferably, the hydrophobic degree of the inorganic oxide powder is 50% or higher. Preferably, the inorganic oxide powder consists of silica powder, alumina powder, titania powder or a mixture thereof. The gel composition containing this inorganic oxide powder exhibits a thixotropy index of 6.0 or higher. Preferably, the dynamic elasticity (D30) thereof containing the inorganic oxide powder in an amount of 30 wt.% or more is 10000 Pa or greater. A gel electrolyte for battery that excels in workability and shape retention can be obtained from this gel composition.

Inventors:
AMANO YUKI (JP)
SUZUKI SHIGERU (JP)
PAUL BRANDL (JP)
Application Number:
PCT/JP2003/016806
Publication Date:
July 22, 2004
Filing Date:
December 25, 2003
Export Citation:
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Assignee:
NIPPON AEROSIL CO LTD (JP)
AMANO YUKI (JP)
SUZUKI SHIGERU (JP)
PAUL BRANDL (JP)
International Classes:
C01B13/14; C01B33/12; C01F7/02; H01M6/22; H01M10/05; H01M10/056; (IPC1-7): H01M6/18; H01M10/40; C01B13/14; C01B33/12
Foreign References:
JP2002313136A2002-10-25
JP2001229967A2001-08-24
JPH087924A1996-01-12
JPH0817467A1996-01-19
JPH04245170A1992-09-01
JP2001202999A2001-07-27
JP2004014373A2004-01-15
Attorney, Agent or Firm:
Chiba, Hiroshi (Nihonbashi-kyoei Bldg. 7F 15-17, Nihonbashi-kobunech, Chuo-ku Tokyo, JP)
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