Abstract: As an alternative technique to lead-acid batteries, the present invention provides an inexpensive 2 V non-aqueous electrolyte secondary battery having excellent cycle life at a high rate by preventing volume change during charge and discharge. The non-aqueous electrolyte secondary battery uses: a positive electrode active material having a layered structure, being represented by chemical formula Li1±?[Me]O2, where 0??<0.2, and Me is a transition metal including Ni and at least one selected from the group consisting of Mn, Fe, Co, Ti and Cu, and including elemental nickel and elemental cobalt in substantially the same ratio; and a negative electrode active material including Li4Ti5O12(Li[Li1/3Ti5/3]O4).
Type:
Grant
Filed:
November 3, 2004
Date of Patent:
May 25, 2010
Assignees:
Panasonic Corporation, Osaka City University
Abstract: A method that is capable of producing a vinyl chloride-based polymer having excellent thermal stability without sacrificing productivity is provided. The method includes polymerizing a vinyl chloride-based monomer in the presence of a vanadium compound (A) represented by formula: Vi(?O)jZk (wherein i is an integer of 2 to 5, j represents 0 or 1, Z represents a ligand such as is an organic ligand that can bond to the vanadium atom via a hetero atom, and a plurality of ligands Z may be bonded together to form a ring that also includes the vanadium atom as a member of the ring, and k is an integer from 1 to 5), and in the presence of at least one aluminum compound (B).
Type:
Application
Filed:
September 8, 2009
Publication date:
April 8, 2010
Applicants:
Osaka City University, Shin -Etsu Chemical Co., Ltd.
Abstract: A positive electrode active material for a non-aqueous electrolyte battery comprising a lithium-containing transition metal oxide, produced with the use of a dry precursor obtained by: introducing an alkaline solution together with an aqueous solution containing two or more of transition metal salts or two kinds or more of aqueous solutions of different transition metal salts into a reaction vessel to obtain a hydroxide or an oxide as a precursor through coprecipitation with a reductant being coexistent or an inert gas being supplied; and drying the precursor at 300 to 500° C. to obtain a dry precursor.
Type:
Grant
Filed:
September 12, 2002
Date of Patent:
March 2, 2010
Assignees:
Panasonic Corporation, Osaka City University
Abstract: Si—Si bond-bearing compounds are effectively prepared by irradiating with radiation or heating Si—H group-bearing silicon compounds in organic solvents in the presence of iron complex catalysts. The Si—Si bond-bearing compounds are useful as a base material in photoresist compositions, ceramic precursor compositions, and conductive compositions.
Type:
Grant
Filed:
October 30, 2008
Date of Patent:
February 16, 2010
Assignees:
Public University Corporation Osaka City University, Shin-Etsu Chemical Co., Ltd.
Abstract: The present invention provides a high-capacity and low-cost non-aqueous electrolyte secondary battery, comprising: a negative electrode containing, as a negative electrode active material, a ssubstance capable of absorbing/desorbing lithium ions and/or metal lithium; a separator; a positive electrode; and an electrolyte, wherein the positive electrode active material contained in the positive electrode is composed of crystalline particles of an oxide containing two kinds of transition metal elements, the crystalline particles having a layered crystal structure, and oxygen atoms constituting the oxide forming a cubic closest packing structure.
Type:
Grant
Filed:
November 7, 2001
Date of Patent:
September 22, 2009
Assignees:
Panasonic Corporation, Osaka City University
Abstract: A positive electrode active material for a non-aqueous electrolyte battery comprising a lithium-containing transition metal oxide, produced with the use of a dry precursor obtained by: introducing an alkaline solution together with an aqueous solution containing two or more of transition metal salts or two kinds or more of aqueous solutions of different transition metal salts into a reaction vessel to obtain a hydroxide or an oxide as a precursor through coprecipitation with a reductant being coexistent or an inert gas being supplied; and drying the precursor at 300 to 500° C. to obtain a dry precursor.
Type:
Grant
Filed:
September 14, 2006
Date of Patent:
August 25, 2009
Assignees:
Panasonic Corporation, Osaka City University
Abstract: In order to provide a 3V level non-aqueous electrolyte secondary battery with a flat voltage and excellent cycle life at a high rate with low cost, the present invention provides a positive electrode represented by the formula: Li2±?[Me]4O8?x, wherein 0??<0.4, 0?x<2, and Me is a transition metal containing Mn and at least one selected from the group consisting of Ni, Cr, Fe, Co and Cu, said active material exhibiting topotactic two-phase reactions during charge and discharge.
Type:
Grant
Filed:
February 24, 2003
Date of Patent:
June 2, 2009
Assignees:
Panasonic Corporation, Osaka City University
Abstract: The present invention provides a high-capacity and low-cost non-aqueous electrolyte secondary battery, comprising: a negative electrode containing, as a negative electrode active material, a substance capable of absorbing/desorbing lithium ions and/or metal lithium; a separator; a positive electrode; and an electrolyte, wherein the positive electrode active material contained in the positive electrode is composed of crystalline particles of an oxide containing two kinds of transition metal elements, the crystalline particles having a layered crystal structure, and oxygen atoms constituting the oxide forming a cubic closest packing structure.
Type:
Application
Filed:
January 14, 2008
Publication date:
August 14, 2008
Applicants:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., OSAKA CITY UNIVERSITY
Abstract: The present invention provides a high-capacity and low-cost non-aqueous electrolyte secondary battery, comprising: a negative electrode containing, as a negative electrode active material, a substance capable of absorbing/desorbing lithium ions and/or metal lithium; a separator; a positive electrode; and an electrolyte, wherein the positive electrode active material contained in the positive electrode is composed of crystalline particles of an oxide containing two kinds of transition metal elements, the crystalline particles having a layered crystal structure, and oxygen atoms constituting the oxide forming a cubic closest packing structure.
Type:
Application
Filed:
October 25, 2007
Publication date:
April 24, 2008
Applicants:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., OSAKA CITY UNIVERSITY
Abstract: The present invention relates to a positive electrode active material comprising a lithium-containing composite oxide containing nickel with an oxidation state of 2.0 to 2.5 and manganese with an oxidation state of 3.5 to 4.0, the oxidation state determined by the shifts of energy at which absorption maximum is observed in the X-ray absorption near-K-edge structures, and to a non-aqueous electrolyte secondary battery using the same, the positive electrode active material being characterized in having a high capacity, a long storage life and excellent cycle life.
Abstract: A positive electrode active material for a non-aqueous electrolyte battery comprising a lithium-containing transition metal oxide, produced with the use of a dry precursor obtained by: introducing an alkaline solution together with an aqueous solution containing two or more of transition metal salts or two kinds or more of aqueous solutions of different transition metal salts into a reaction vessel to obtain a hydroxide or an oxide as a precursor through coprecipitation with a reductant being coexistent or an inert gas being supplied; and drying the precursor at 300 to 500° C. to obtain a dry precursor.
Type:
Application
Filed:
September 14, 2006
Publication date:
January 11, 2007
Applicants:
OSAKA CITY UNIVERSITY, MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.