COMPOSITION FOR PRODUCING POSITIVE ELECTRODE FOR ELECTRICITY STORAGE DEVICE, POSITIVE ELECTRODE FOR ELECTRICITY STORAGE DEVICE MADE WITH SAID COMPOSITION, AND ELECTRICITY STORAGE DEVICE COMPRISING SAME
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United States of America Patent
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Issued Date -
Feb 2, 2012
app pub date -
Feb 17, 2010
filing date -
Feb 17, 2009
priority date (Note) -
Abandoned
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Abstract
This invention relates to a composition for producing a cathode for an electricity storage device, including carbon nanofibers prepared by electrospinning a spinning solution including a cathode active material, a conductive material and a carbon fiber precursor; and a binder, and to a cathode for an electricity storage device made with the composition and to an electricity storage device including the cathode. The composition for producing a cathode includes carbon nanofibers instead of part or all of a conductive material, a dispersant and/or a binder, so that the cathode has remarkably increased specific surface area and electrical conductivity (decreased resistance), thus maximizing the efficiency of the cathode active material and the capacity.
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