Abstract: The invention provides a novel lithium-ion battery electrolyte which is produced by adding an aluminate ester compound as a plasticizer in a solid polymer electrolyte. The lithium-ion battery solid polymer electrolyte of the present invention comprises a lithium ion source, an organic polymer compound, and one or more kinds of aluminate ester compounds represented by the general formula where R1, R2, and R3 each independently represent a straight-chain or branched-chain lower alkyl group having one to eight carbon atoms, an alkenyl group having three to six carbon atoms, acryloyl, or methacryloyl; OA1, OA2, and OA3 each independently represent an oxyalkylene group having two to four carbon atoms; l represents a number from 1 to 100; and m and n each independently represent a number from 0 to 100.

Abstract: The invention provides a novel lithium-ion battery electrolyte which is produced by adding an aluminate ester compound as a plasticizer in a solid polymer electrolyte. The lithium-ion battery solid polymer electrolyte of the present invention comprises a lithium ion source, an organic polymer compound, and one or more kinds of aluminate ester compounds represented by the general formula where R1, R2, and R3 each independently represent a straight-chain or branched-chain lower alkyl group having one to eight carbon atoms, an alkenyl group having three to six carbon atoms, acryloyl, or methacryloyl; OA1, OA2, and OA3 each independently represent an oxyalkylene group having two to four carbon atoms; l represents a number from 1 to 100; and m and n each independently represent a number from 0 to 100.

Abstract: The invention provides an electrolyte for secondary battery having a high ionic conductivity and an excellent safety and a secondary battery having an excellent cycle life performance comprising such an electrolyte.

Abstract: A positive electrode material for a lithium secondary battery includes a lithium manganese oxide having a spinel structure, expressed by one of the general formulae; LixMnyO4 (where 1≦x≦1.33 and 3−x<y≦3.1−x); and LixMnyMzO4 (where M is a metallic element other than Li and Mn, 1≦x≦1.33, 3−x−z<y≦3.1−x−z, and o<z≦1.0). The metallic element M may be at least one selected from the group consisting of Mg, Al, Cr and Ni. A lithium secondary battery includes at least a positive electrode of the positive electrode material.

Abstract: A positive electrode material for a lithium secondary battery includes a lithium manganese oxide having a spinel structure, expressed by one of the general formulae; LixMnyO4

Abstract: A high crystallinity powdery graphite is mixed with an organic binder capable of forming a low crystallinity carbon after firing. A high shearing force is applied to the mixture so that a composition is obtained wherein both the components are dispersed in each other under a mechano-chemical reaction. Then a paste of the composition is extruded so that the high crystallinity graphite is highly oriented. A green extrudate of the composition is fired in an inert atmosphere or a non-oxidation atmosphere at a temperature in a range between 500 and 1,100.degree. C. so that the organic binder contained therein is carbonized and a graphite-carbon carbonaceous composite of an amorphous or random layered structure is obtained, which then is ground and used as a cathode for a lithium ion secondary battery.

Abstract: A material structure having positive polarity is disclosed. The material is produced by providing a structure wherein a mixture comprising (i) a copper Chevrel phase compound represented by the general formula:Cu.sub.x Mo.sub.6 S.sub.8-y ( 1)(wherein x=2 to 4 and y=0 to 0.25) and (ii) a high polymeric organic compound, filled in the open sections of a reticulate material sheet, at least the surface of which is formed of copper, and by heating said structure in a gas containing sulfur. The material structure is easily handled industrially, with superior productivity and exhibits a high energy density, and is suitable for use as a cathode component for primary and secondary batteries.