Abstract: Excellent thermal stability in addition to excellent cycle property with maintaining a sufficient battery capacity is shown by positive electrode active material particles having a layered rock salt structure, represented by the compositional formula: (Li?Xc)(NiaCobXcZd)O2, in the compositional formula: X is a divalent metallic element capable of substituting for Li-site; Z is a metallic element containing at least Al and/or Mn, other than X; 0.93???1.15; 0.82?a<1.00; 0?b?0.12; 0.001?c+e?0.040; 0?d?0.10; and a+b+c+d=1.

Abstract: An object of the present invention is to provide a positive electrode mixture capable of conducting stable charging and discharging with a less amount of gasses generated which has an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium. The present invention relates to a positive electrode mixture comprising carbon black having a bulk density of not more than 0.1 g/cm3, a crystallite size of 10 to 40 ?, an iodine adsorption of 1 to 150 mg/g, a volatile content of not more than 0.1% and a metal impurity content of not more than 20 ppm, and a positive electrode active substance having an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium.

Abstract: The present invention relates to Li-Ni composite oxide particles that exhibit a high initial discharge capacity and are excellent in thermal stability when used as a positive electrode active substance for non-aqueous electrolyte secondary batteries, and a process for producing the Li-Nicomposite oxide particles. The Li-Ni composite oxide particles of the present invention have a composition of LixNi1?y?a?bCoyM1aM2bO2 wherein x, y, a and b represent 1.00?x?1.10; 0<y?0.25; 0<a?0.25; and 0?b?0.10, respectively; M1 is at least one element selected from the group consisting of Al and Mn; and M2 is at least one element selected from the group consisting of Zr and Mg, in which a product of a metal occupancy (%) of lithium sites of the Li-Ni composite oxide as determined by Rietveld analysis of X-ray diffraction thereof and a crystallite size (nm) of the Li-Ni composite oxide as determined by the Rietveld analysis is not less than 700 and not more than 1400.

Abstract: An object of the present invention is to provide a positive electrode mixture capable of conducting stable charging and discharging with a less amount of gasses generated which has an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium. The present invention relates to a positive electrode mixture comprising carbon black having a bulk density of not more than 0.1 g/cm3, a crystallite size of 10 to 40 ?, an iodine adsorption of 1 to 150 mg/g, a volatile content of not more than 0.1% and a metal impurity content of not more than 20 ppm, and a positive electrode active substance having an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium.

Abstract: The present invention relates to Li—Ni composite oxide particles that exhibit a high initial discharge capacity and are excellent in thermal stability when used as a positive electrode active substance for non-aqueous electrolyte secondary batteries, and a process for producing the Li—Ni composite oxide particles. The Li—Ni composite oxide particles of the present invention have a composition of LixNi1-y-a-bCoyM1aM2bO2 wherein x, y, a and b represent 1.00?x?1.10; 0<y?0.25; 0<a?0.25; and 0?b?0.10, respectively; M1 is at least one element selected from the group consisting of Al and Mn; and M2 is at least one element selected from the group consisting of Zr and Mg, in which a product of a metal occupancy (%) of lithium sites of the Li—Ni composite oxide as determined by Rietveld analysis of X-ray diffraction thereof and a crystallite size (nm) of the Li—Ni composite oxide as determined by the Rietveld analysis is not less than 700 and not more than 1400.

Abstract: A synthetic resin composition comprising 100 parts by weight of a synthetic resin, from 2 to 900 parts by weight of an inorganic filler, and from 0.02 to 20 parts by weight of a copolymer of a compound represented by formula (1) and maleic anhydride, maleic acid, a maleic acid salt or a maleic acid ester; ##STR1## wherein Z is a residue of a compound having from 2 to 8 hydroxyl groups; AO is an oxyalkylene group having from 2 to 18 carbon atoms; R.sup.1 is an unsaturated hydrocarbon group having from 2 to 5 carbon atoms; R.sup.2 is a hydrocarbon or acyl group having from 1 to 40 carbon; a is from 0 to 1,000, b is from 0 to 1,000, c is from 0 to 1,000, l is an integer of from 1 to 8, m is an integer of from 0 to 2, and n is an integer of from 0 to 7, l+m+n=2 to 8, al+bm+cn=1 to 1,000, and n/(l+n).ltoreq.1/3.