POWDER MATERIAL AND POSITIVE ELECTRODE MIX

Title:

POWDER MATERIAL AND POSITIVE ELECTRODE MIX

Document Type and Number:

WIPO Patent Application WO/2011/016574

Kind Code:

A1

Abstract:

Provided are a powder material and a positive electrode mix for a nonaqueous electrolyte secondary battery capable of exhibiting high output under high current rate conditions. The powder material comprises a positive electrode active material powder having an average grain size between 0.05 µm and 1 µm and two or more graphite powders, with the two or more graphite powders each having different average grain sizes which are all between 0.01 µm and 20 µm. The positive electrode mix comprises the powder material, a binder, and a solvent.

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Inventors:

TANINO KAZUYUKI (JP)

Application Number:

PCT/JP2010/063441

Publication Date:

February 10, 2011

Filing Date:

August 02, 2010

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO (JP)
TANINO KAZUYUKI (JP)

International Classes:

H01M4/13; H01M4/131; H01M4/139; H01M4/1391; H01M4/505; H01M4/525; H01M4/62; H01M50/449; H01M50/451; H01M50/491

Foreign References:

JP2007080652A	2007-03-29
JP2007173134A	2007-07-05
JP2005116304A	2005-04-28
JP2008243529A	2008-10-09
JPH09161838A	1997-06-20
JP2009158484A	2009-07-16

Attorney, Agent or Firm:

NAKAYAMA, Tohru et al. (JP)
Toru Nakayama (JP)

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