Abstract: A positive electrode active material for a lithium battery is provided which offers high-temperature storage property and battery properties and comprises manganese dioxide having a crystal structure that exhibits an X-ray diffraction pattern in which peaks having a peak intensity ratio of not less than 0.05 with respect to the peak at 2?=37.3°±0.5° are present at positions of 2?=18.2°±0.5°, 19.5°±0.5°, 28.6°±0.5°, 56.6°±0.5°, 59.1°±0.5°, and 65.1°±0.5°, or further at 2?=22.0°±1.0°, the X-ray diffraction pattern being obtained using a powder X-ray diffraction device (XRD) that uses CuK?1 rays.

Abstract: In order to provide a novel spinel type lithium transition metal oxide (LMO) having excellent power performance characteristics, in which preferably both the power performance characteristics and the cycle performance at high temperature life characteristics may be balanced, a novel spinel type lithium transition metal oxide with excellent power performance characteristics is proposed by defining the inter-atomic distance Li—O to be 1.978 ? to 2.006 ? as measured by the Rietveld method using the fundamental method in a lithium transition metal oxide represented by the general formula Li1+xM2?xO4 (where M is a transition metal consisting of three elements Mn, Al and Mg and x is 0.01 to 0.08).

Abstract: In order to provide a novel spinel type lithium transition metal oxide (LMO) having excellent power performance characteristics, in which preferably both the power performance characteristics and the cycle performance at high temperature life characteristics may be balanced, a novel spinel type lithium transition metal oxide with excellent power performance characteristics is proposed by defining the inter-atomic distance Li—O to be 1.978 ? to 2.006 ? as measured by the Rietveld method using the fundamental method in a lithium transition metal oxide represented by the general formula Li1+xM2?xO4 (where M is a transition metal consisting of three elements Mn, Al and Mg and x is 0.01 to 0.08).

Abstract: A positive electrode active material for a lithium battery is provided which offers high-temperature storage property and battery properties and comprises manganese dioxide having a crystal structure that exhibits an X-ray diffraction pattern in which peaks having a peak intensity ratio of not less than 0.05 with respect to the peak at 2?=37.3°±0.5° are present at positions of 2?=18.2°±0.5°, 19.5°±0.5°, 28.6°±0.5°, 56.6°±0.5°, 59.1°±0.5°, and 65.1°±0.5°, or further at 2?=22.0°±1.0°, the X-ray diffraction pattern being obtained using a powder X-ray diffraction device (XRD) that uses CuK?1 rays.

Abstract: A process for preparing a metallic cadmium powder for use in a nickel-cadmium by heat melting metallic cadmium in an evaporator, introducing an inert gas into the evaporator to discharge cadmium vapor along with the inert gas into a cooler, and collecting the resulting metallic cadmium powder, wherein the process condition is regulated such that at least one of the following conditions (1) and (2) can be satisfied:(1) the amount of the inert gas flow introduced into the evaporator is at least 30 Nl/g of cadmium vapor while the direction of introducing the inert gas into the evaporator is set against the surface of the molten cadmium; and(2) the temperature of the molten cadmium in the evaporator and the amount of the inert gas flow introduced into the evaporator are set such that the following formulae can be satisfied:log y.gtoreq.8.8.times.10.sup.-3 x-5.3 (600.ltoreq.x.ltoreq.900), andlog y.gtoreq.1.8.times.10.sup.-3 x-0.96 (330.ltoreq.x.ltoreq.600),wherein x is the temperature (.degree.C.