Abstract: A lithium polymer secondary battery which comprises a negative electrode, a positive electrode, and polymer electrolyte layers united respectively with the two electrodes and differing in viscoelastic behavior. In this battery, conformation to the expansion and shrinkage accompanying charge/discharge is easy and the interfacial resistance between each electrode and the polymer electrolyte is kept low.

Abstract: A lithium secondary battery which comprises:

Abstract: A lithium secondary cell with a small decrease in discharge capacity during high-load discharge and little self-discharge. The electrolytic layers of the cell consist of positive-side and negative-side polymer electrolytic layers integrated with their respective electrodes, wherein the positive-side electrolytic layer is lower than the negative-side electrolytic layer indirect current resistance.

Abstract: A lithium secondary battery which comprises a negative electrode, a positive electrode, and disposed therebetween a polymer electrolyte comprising an ionically conductive polymer. The polymer electrolyte has a two-layer structure composed of a positive-electrode-side layer and a negative-electrode-side layer. The polymer electrolyte on the positive-electrode side contains a nonaqueous electrolytic solution containing a lithium salt in a higher concentration than that in the polymer electrolyte on the negative-electrode side. The battery is improved in charge/discharge cycling characteristics and high-load discharge characteristics.

Abstract: A lithium polymer secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, characterized in that the cell has been subjected to a heat treatment at a temperature of 40 to 60° C. after the assembly thereof. The polymer cell is freed of or is reduced in the adverse effect of a residual monomer and initiator on the performance of the cell. The polymer electrolyte is formed by cross-linking polymerization of a precursor monomer for an ion conducting polymer in a non-aqueous electrolyte, and the residual monomer and initiator contained therein is consumed by the heat treatment.

Abstract: A secondary battery improved in its cathode composite, electrolyte and anode composite in order to accomplish an excellent charge/discharge characteristic, a long-term reliability and a high performance. The secondary battery is characterized in that the electrolyte is composed of an ion-conductive high-molecular compound including one or more kinds of ionic compounds in a dissolution state, and both the cathode composite and the anode composite have the ion-conductive high-molecular compound as their component material.

Abstract: A battery having a cathode composite made of an ion-conductive high-molecular weight compound; an electrolyte made of the ion-conductive high-molecular weight compound; and an anode made of an electrode active material or a composite which includes the ion-conductive high-molecular weight compound. The amount of sulphate ion, para-toluenesulfonate ion, chlorine ion, polyethylene glycol, acrylic acid and methacrylic acid etc. inside the battery is controlled to 0.1 wt % or less.

Abstract: A galvanic cell is in which at least one of the negative electrode, the positive electrode and the separator comprises a solid electrolyte prepared by doping an ionic compound to an organic polymer. The organic polymer is a polymer obtained by crosslinking an organic compound having a structure of the general formula (I):Z-[(A).sub.m -(E).sub.p -Y].sub.k (I)where Z is a residue of a compound containing at least one active hydrogen; A is represented by the following formula (II) ##STR1## wherein n is an integer of 0 to 25 and R is an alkyl having 1 to 20 carbon atoms, alkenyl, aryl or alkylaryl; E is at least one of --(R.sup.2 O)--, R.sup.2 being an alkylene having two or more carbon atoms; Y is an active hydrogen or a polymerizable functional group; k is an integer of 1 to 12; m is an integer of 1 to 250; p is an integer of 1 to 450; and A is copolymerized with E. When E is --(CH.sub.2 CH.sub.2 O)--, A and E are random-copolymerized, but when E comprises --(R.sub.2 O)-- in which R.sup.

Abstract: A battery equipped with a cathode composite (2), an anode composite or an anode (4), an electrolyte layer (3) and a sealing material (6); characterized by that a material such as an element belonging to VIII-group of periodic table such as palladium etc., for example, is included in an inside of the battery. Gas produced in the battery inside is absorbed to the above material or added to a residual reactive double bond in an ion-conductive high-molecular compound by the above material, so that a rise of battery inside pressure due to gas is restrained and expansion and bursting of the battery are thus prevented.

Abstract: A lithium secondary battery includes a positive electrode, an electrolyte layer having a solid polymer electrolyte, and a negative electrode using metallic lithium or lithium alloy as an active material. The electrolyte layer includes a first layer and a second layer, and an electrolyte of the first layer in contact with the negative electrode is less reactive with a negative active material than to an electrolyte of the second layer.

Abstract: A cell is obtained with use of a solid electrolyte prepared by dissolving a trifunctional terminal acryloyl-modified alkylene oxide polymer having a polymer chain represented by the following formula (1) and an electrolyte salt in a solvent, and then by crosslinking it by a radioactive ray irradiation and/or by heating. The solvent is used in a ratio of 220 to 950 weight % based on the above polymer. ##STR1## (R' is an alkyl group having 1 to 6 carbon atoms, R" is hydrogen or methyl group, and m and n are respectively 0 or an integer of at least 1 and m+n.gtoreq.35.

Abstract: The improved battery for reversible operation at ambient temperature comprises a negative electrode, a composite positive electrode which is composed of an ion-conductive high-molecular weight compound that has at least one ionic compound dissolved therein and that has a polyether structure and ion conductivity, an electrochemically active material and, optionally, an electron conductive material, and an electrolyte which is made of an ion-conductive high-molecular weight compound that has at least one ionic compound dissolved therein and that has a polyether structure and ion conductivity. The improvement is such that said composite positive electrode and said electrolyte are formed by exposure to an active radiation such as ultraviolet rays or ionizing radiation. Thanks to the improvement in electrolyte and positive electrode, the battery can be fabricated with great ease, is entirely free from the possibility of electrolyte leakage and has high long-term reliability and safety.