摘要:
A thinner secondary battery can be provided by a thin secondary battery characterized by comprising a battery element obtained by stacking positive electrode layers, electrolyte layers and negative electrode layers and laminates sealing front and back surfaces of the battery element, wherein the laminates each are made of a stacked body constructed of at least an adhesive layer and a metal layer in the order from the battery element side and the metal layer in the front surface side of the battery element and the metal layer in the back surface side thereof are different from each other in strength or thickness, or both of them.
摘要:
A polymeric solid electrolyte is composed of a polymer that contains an electrolyte salt and an organic solvent. The organic solvent is composed of a fluorinated organic solvent. The polymer solid electrolyte can retain a sufficiently high ion conductivity and provides excellent safety by exhibiting flame retardancy when heated.
摘要:
A process of preparing lithium nickel oxide as a positive electrode active material comprising: dissolving a water-soluble lithium compound and a water-soluble nickel compound in water to prepare a homogeneous aqueous solution; co-precipitating, from the aqueous solution, a lithium salt and a nickel salt which are slightly soluble in water; isolating the resulting co-precipitate and calcining the co-precipitate to obtain lithium nickel oxide.
摘要:
A nonaqueous secondary battery is provided which comprises a positive electrode, a negative electrode and a nonaqueous ion conductor, either one of the positive electrode and the negative electrode containing lithium or a lithium absorbable and desorbable substance as an active material thereof, the other electrode containing a lithium transition-metal nitride of an anti-fluorite type structure as an active material thereof.
摘要:
A nonaqueous secondary battery comprising a cathode, an anode and a nonaqueous electrolyte disposed and sealed between the cathode and the anode wherein the anode is made of a carbon material as its active material, in which the carbon material comprises a fine core particle of a metal or an alloy thereof, and a carbon layer which is arranged and stacked in an onion-like shell configuration centering on the fine core particle, at least part of the carbon layer having a crystal structure in which graphite-like layers are stacked and the fine core particle having an average diameter of about 10 to 150 nm.
摘要:
The aqueous paste for an electrochemical cell of the present invention comprises an aqueous dispersion for an electrochemical cell that comprises an olefin copolymer (a); an active material; and a conductive assistant, wherein the olefin copolymer (a) has a weight average molecular weight of not less than 50,000 and is at least one kind selected from a random propylene copolymer (a-1) containing 50% by weight to less than 85% by weight of a structural unit derived from propylene; an acid-modified random propylene copolymer (a-2) obtained by modifying the copolymer (a-1) with an acid; and an ethylene-(meth) acrylic acid copolymer (a-3) containing 5% by weight to less than 25% by weight of a structural unit derived from (meth) acrylic acid.
摘要:
A lithium secondary battery which comprises: a negative electrode comprising as an active material a carbonaceous material capable of electrochemically holding/releasing lithium; a positive electrode comprising as an active material a lithium chalcogenide; and polymer electrolyte layers united respectively with the negative electrode and the positive electrode. The polymer electrolyte layers comprise an ionically conductive polymer matrix holding a nonaqueous electrolytic solution. They are obtained by crosslinking and polymerizing a liquid mixture of a monomeric precursor for the ionically conductive polymer and the nonaqueous electrolytic solution respectively on the negative electrode and the positive electrode using different polymerization initiators.
摘要:
Provided is a dye-sensitized solar cell having improved stability of safety and performance by employing a non-volatile molten salt which makes it possible to facilitate the control over the composition of gel electrolyte, simplify the working step during production and give an excellent conversion efficiency. The dye-sensitized solar cell comprises a transparent substrate, a transparent electrically-conductive membrane formed on the surface of the transparent substrate and an electrically-conductive substrate disposed opposed to the transparent electrically-conductive membrane and further comprises a porous semiconductor layer having a dye adsorbed thereto and an electrolyte provided interposed between the aforesaid transparent electrically-conductive membrane and the electrically-conductive substrate, wherein the electrolyte comprises a molten salt incorporated in a network structure obtained by crosslinking at least one kind of Compound A having isocyanate group with at least one kind of Compound B having amino group to solve the aforesaid problems. Or the electrolyte comprises a molten salt incorporated in a network structure obtained by crosslinking at least one kind of Compound A having isocyanate group with at least one kind of Compound C having carboxyl group and/or hydroxyl group, at least one of Compound A and Compound C constituting the electrolyte has a polymer structure having a molecular weight of from 500 to 100,000 and a part or whole of the polymer structure comprises one or more selected from the group consisting of polyether, polyester, polycaprolactone, polysiloxane, polyvinylpyrrolidone, polycarbonate and polyphosphazene.
摘要:
A secondary battery comprising a battery main body composed of at least one battery element and an external packaging film, the battery element including an electrolyte as well as a positive electrode layer and a negative electrode layer holding the electrolyte therebetween, the external packaging film closely contacting and sealing the battery element, wherein the external packaging film sealing the battery element has, at a surface thereof, a difference in level according to a contour of the battery element.
摘要:
A method for manufacturing a carbon composite electrode material which comprises coating the surface of core carbon particles with high crystallinity with a film containing a element of Group VIII metal and depositing and/or covering the surface of resulting coated carbon particles with a carbon material to be formed upon pyrolysis of a hydrocarbon or its derivative.