Abstract: The positive electrode active material sintered body for a battery of the present invention is a positive electrode active material sintered body for a battery satisfying the following requirements (I) to (VII): (I) fine particles in a positive electrode active material are sintered to constitute the sintered body; (II) a peak pore diameter which provides a maximum differential pore volume value in a pore diameter range of 0.01 to 10 ?m in a pore distribution is 0.3 to 5 ?m; (III) a total pore volume is 0.1 to 1 cc/g; (IV) an average particle diameter is not less than the peak pore diameter and not more than 20 ?m; (V) any peak, which provides a differential pore volume value of not less than 10% of the maximum differential pore volume value, is not present on a smaller pore diameter side than the peak pore diameter in the pore distribution; (VI) a BET specific surface area is 1 to 6 m2/g; and (VII) a full width at half maximum of a strongest X-ray diffraction peak is 0.13 to 0.2.

Abstract: It is an object of the present invention to provide a method for producing a positive electrode active material for a battery, which can realize easy regulation of pore size in porosity formation of a positive electrode active material and is less likely to undergo hindrance of ion conduction caused by residues and, thus, can realize excellent high-rate discharge characteristics, and a method for producing a composition for a battery using the positive electrode active material for the battery. The method for producing a positive electrode active material for a battery of the present invention is a method for producing a positive electrode active material for a battery, including: a step 1 of firing a mixture of a raw material for the positive electrode active material and carbon particles to remove the carbon particles; and a step 2 of milling and classifying a fired body obtained in the step 1.

Abstract: The present invention provides a method for producing a composite material for positive electrodes of lithium batteries which is particularly excellent in high-rate discharge characteristics. The method for producing a composite material for positive electrodes of lithium batteries, contains: a dispersing step of dispersing at least the positive electrode active material and the conductive material 1 in a solvent to be in a forcibly dispersed state; and a composite particle-forming step of obtaining composite particles containing the positive electrode active material and the conductive material 1 by a process for agglutinating the conductive material 1 together with the positive electrode active material in the solvent or by a process for removing the solvent.

Abstract: The present invention provides a composite positive electrode material for a lithium ion battery, which is particularly excellent in high-rate discharge characteristics in a battery, and also provides a slurry, positive electrode and battery using the composite positive electrode material. The composite positive electrode material for a lithium ion battery contains: a positive electrode active material (a); a conductive material (b) having a primary particle diameter of 10 to 100 nm and/or a fibrous conductive material (c) having a fiber diameter of 1 nm to 1 ?m; and a conductive material (d) having an aspect ratio of 2 to 50.

Abstract: The present invention provides a method for producing a composite material for positive electrodes of lithium batteries which is particularly excellent in high-rate discharge characteristics. The method for producing a composite material for positive electrodes of lithium batteries, contains: a dispersing step of dispersing at least the positive electrode active material and the conductive material 1 in a solvent to be in a forcibly dispersed state; and a composite particle-forming step of obtaining composite particles containing the positive electrode active material and the conductive material 1 by a process for agglutinating the conductive material 1 together with the positive electrode active material in the solvent or by a process for removing the solvent.

Abstract: Disclosed is a composite positive electrode material for lithium ion batteries, which especially enables to achieve excellent high-rate discharge characteristics in a battery. Also disclosed are a slurry, positive electrode and battery using such a composite positive electrode material. Specifically disclosed is a composite positive electrode material for lithium ion batteries, which contains a positive electrode active material (a), a conductive substance (b) having a primary particle diameter of 10-100 nm and/or a fibrous conductive substance (c) having a fiber diameter of from 1 nm to 1 ?m, and a conductive substance (d) having an aspect ratio of 2-50.

Abstract: The positive electrode active material sintered body for a battery of the present invention is a positive electrode active material sintered body for a battery satisfying the following requirements (I) to (VII): (I) fine particles in a positive electrode active material are sintered to constitute the sintered body; (II) a peak pore diameter which provides a maximum differential pore volume value in a pore diameter range of 0.01 to 10 ?m in a pore distribution is 0.3 to 5 ?m; (III) a total pore volume is 0.1 to 1 cc/g; (IV) an average particle diameter is not less than the peak pore diameter and not more than 20 ?m; (V) any peak, which provides a differential pore volume value of not less than 10% of the maximum differential pore volume value, is not present on a smaller pore diameter side than the peak pore diameter in the pore distribution; (VI) a BET specific surface area is 1 to 6 m2/g; and (VII) a full width at half maximum of a strongest X-ray diffraction peak is 0.13 to 0.2.

Abstract: It is an object of the present invention to provide a method for producing a positive electrode active material for a battery, which can realize easy regulation of pore size in porosity formation of a positive electrode active material and is less likely to undergo hindrance of ion conduction caused by residues and, thus, can realize excellent high-rate discharge characteristics, and a method for producing a composition for a battery using the positive electrode active material for the battery. The method for producing a positive electrode active material for a battery of the present invention is a method for producing a positive electrode active material for a battery, including: a step 1 of firing a mixture of a raw material for the positive electrode active material and carbon particles to remove the carbon particles; and a step 2 of milling and classifying a fired body obtained in the step 1.

Abstract: An amphoteric porous particulate containing a basic polysaccharide and a polymer of an organic acid containing a reactive vinyl group or a salt thereof and having an average particle size of 50 .mu.m or less, is capable of adsorbing a large amount of an acid or a base that is stronger than the acid or basic groups thereof and is useful in a deodorant or a cosmetic. The amphoteric porous particulate is made by emulsifying or suspending an aqueous solution containing a basic polysaccharide and an organic acid having a reactive vinyl group in a hydrophobic solvent, followed by polymerization. A deodorant may be made of a chitosan particulate having an average particle size of 0.01 to 50 .mu.m. A polysiloxane having long-chain alkyl groups and a melting point of 20.degree. C. or above is useful as an oil component of a deodorant.

Abstract: A polymaleate having an average molecular weight of 300 to 5000 is obtained by polymerizing a monoalkali metal maleate or monoammonium maleate at 80.degree. to 180.degree. C. in the presence of a polymerization initiator in an aqueous solvent.

Abstract: A copolymer of maleic acid (MA) and (meth)acrylic acid (AA), or a salt thereof, wherein the molar ratio (MA/AA) .gamma. of the constituent monomers is 1.15 to 2.7, the average molecular weight MW is 1000 to 8000, and (.gamma.).times.(MW) is at least 3000.

Abstract: A copolymer of maleic acid (MA) and (meth)acrylic acid (AA), or a salt thereof, wherein the molar ratio (MA/AA) .gamma. of the constituent monomers is 1.15 to 2.7, the average molecular weight MW is 1000 to 8000, and (.gamma.).times.(MW) is at least 3000. The copolymer is useful as a calcium ion capturing agent, in a process for treating water to inhibit formation of scale surfaces contacted by the water.