Abstract:
PROBLEM TO BE SOLVED: To provide an energy storage device of large capacity density. SOLUTION: A viologen derivative salt or a bipyridyl derivative salt dissolved into an electrolyte at a concentration of 0.1 M or more is used as a negative electrode active material, at least one active material selected from a transition metal complex, an aniline group low molecular compound, a neutral radical compound or π conjugated polymer is used as a positive electrode, and further an active carbon, fibrous carbon and a porous carbon, etc. are used as an electrode. For example, the energy storage device includes at least the positive electrode, the negative electrode, the electrolyte, a separator and the active material where at least a part is dissolved into the electrolyte, and the active material is a nitrogen-containing aromatic compound and/or a quaternary ammonium salt of the nitrogen-containing aromatic compound. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery in which a resistance rise is inhibited and an internal short circuit is prevented to achieve excellent charge-discharge cycle characteristics by preventing an electrolyte shortage in an electrode layer, preventing the occurrence of a gap, and allowing the accommodation of variations in cell thickness. SOLUTION: The nonaqueous electrolyte secondary battery comprises a storage element including a positive electrode, a negative electrode comprising an active material containing an element which can be alloyed with lithium, and a separator containing an electrolyte, and the porosity of the separator decreases gradually with increasing distance from the negative electrode side toward the positive electrode side. COPYRIGHT: (C)2013,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a battery pack, lighter, more compact and downsized, and with high productivity. SOLUTION: The battery pack includes a battery cell 209 having an electrode terminal formed on its upper surface, and a protection circuit module (PCM) block 203 mounted on the battery cell. One or more connection holes for electrically connecting between the battery cell and the PCM block are punched on the PCM block so as the connection part between the battery cell and the PCM block to be exposed outside of the upper surface of the battery cell. The battery pack is made lighter, more compact and downsized, whereby, electronic equipment using the battery pack is reduced in its size as a whole, and therefore, workability is enhanced with simplified assembling processes, manufacturing cost is reduced through reduction of the number of components, and productivity is enhanced through reduction of the number of operation steps by eliminating additional mounting steps. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide novel electrode materials having excellent oxidation-reduction characteristics. SOLUTION: The invention concerns novel electrode materials derived from polyquinone-based ionic compounds and their uses such as in electrochemical generators. It concerns in particular compounds such as a rhodizonic acid salt; a rufigallic acid salt; an ellagic acid salt; a thiocyanic acid polymer or 1-cyano-2-mercaptoacetylene; a polymer containing the units derived from ketopyridine; an alternate polymer containing benzoquinone and pyrazine units; a 1,2-dimercaptocyclobutenedione (dithiosquaric) acid salt; a 1,5-dihydropyrimido(5,4d)pyrimidine-2,4,6,8(3H,7H)-tetronic acid salt; a dicarboxylic acid salt whose groups are linked by conjugate segments; a polyamide derived from a dicarboxylic acid whose groups are linked by conjugate segments. The invention also concerns all the oxidation products of the compounds. COPYRIGHT: (C)2010,JPO&INPIT