Abstract: A non-aqueous electrolyte cell includes a positive electrode, a negative electrode, and an electrolyte consisting of a solute and an organic solvent. The solvent is a solvent mixture of a cyclic carbonate and a non-cyclic carbonate.

Abstract: The present invention discloses a secondary cell. The secondary cell comprises a positive electrode, a negative electrode which is made of a carbon material, and non-aqueous electrolytic solution, wherein the secondary cell is characterized in that the carbon material as the material of the negative electrode is produced by carbonizing natural high polymers.

Abstract: Provided is a novel lithium secondary battery comprising a positive electrode comprising a compound capable of occluding and discharging lithium, a negative electrode composed mainly of a carbon material which comprises a graphite as an only or as a principal component, a separator between said positive electrode and said negative electrode; and an electrolyte solution of an electrolyte solute dissolved in a solvent comprising at least one specific cyclic compound. The lithium secondary battery has a large capacity, small self-discharge rate and excellent cycle characteristics and high charge-discharge efficiency.

Abstract: Provided is a novel lithium secondary battery including a positive electrode including a compound capable of occluding and discharging lithium, a negative electrode composed mainly of a carbon material which includes a graphite as an only or as a principal component, a separator between the positive electrode and the negative electrode; and an electrolyte solution of an electrolyte solute dissolved in a solvent including at least one specific cyclic compound.The lithium secondary battery has a large capacity, small self-discharge rate and excellent cycle characteristics and high charge-discharge efficiency.

Abstract: Provided is a novel lithium secondary battery including a positive electrode including a compound capable of occluding and discharging lithium, a negative electrode composed mainly of a carbon material which includes a graphite as an only or as a principal component, a separator between the positive electrode and the negative electrode; and an electrolyte solution of an electrolyte solute dissolved in a solvent including at least one specific cyclic compound.The lithium secondary battery has a large capacity, small self-discharge rate and excellent cycle characteristics and high charge-discharge efficiency.

Abstract: A hydrogen-absorbing alloy electrode comprises a conductive substrate, a layer of hydrogen-absorbing alloy granules disposed on the conductive substrate and a binder for binding the granules together and to the conductive substrate. A part of the granules is exposed on a surface of the layer on the electrode. The layer may have a predetermined thickness and the granules may include large size granules having a maximum diameter larger than half the thickness of the layer but smaller than the thickness of the layer. The granules may include first granules having a first average diameter and second granules having a second average diameter smaller than the first average diameter; the first granules may be 5 wt % or more but less than 20 wt % of the total weight of the granules.

Abstract: The present invention provides a secondary cell with an enlarged capacity, therefore enlarging a discharge capacity as well as improving charge/discharge cycle characteristics. The secondary cell has a carbon material for a negative electrode, wherein the spacing of (002) planes d.sub.002, a true density, a crystallite size in the direction of c axis Lc, a and specific surface area of the carbon material are restricted to ranges of 3.39.ANG. to 3.62.ANG., 1.70 g/cc to 2.20 g/cc, 10.ANG. to 50.ANG., and 2 m.sup.2 /g to 50 m.sup.2, respectively. The carbon material is selected from a carbon material group consisting of needle cokes, pitch cokes, and coke derived from furfuryl alcohol.

Abstract: A rechargeable non-aqueous secondary cell comprising a negative electrode; a positive electrode comprising a lithium containing manganese oxide as its active material, wherein the positive electrode has a specific surface area measured by the BET method of 9.0 m.sup.2 /g to 67.5 m.sup.2 /g; and a separator interposed between the positive and the negative electrodes which is impregnated with a non-aqueous electrolyte. A recharageable non-aqueous secondary cell comprising a negative electrode; a positive electrode comprising a lithium containing manganese oxide as its active material, which has grain sizes of substantially 20 .mu.m or less, when observed by a scanning electron microscope; and a separator interposed between the positive and said negative electrodes impregnated with a non-aqueous electrolyte.

Abstract: A hydrogen-absorbing alloy electrode for an alkaline storage cell, the electrode including a hydrogen-absorbing alloy expressed by a composition formula ReBxMy, wherein Re is at least one element selected from a group consisting of rare earth elements and alkali earth elements, B is boron, and M is at least one element selected from a group consisting of Ni, Co, Mn, Al, Cr, Fe, Cu. Sn, Sb, Mo, V, Nb, Ta, Zn, Zr and Ti. The alloy consists essentially of an RM.sub.y main metal phase, and a subordinate boron-containing phase, such as a compound phase of boron and a IV-a, V-a, or VI-a group metal.

Abstract: Disclosed is a hydrogen-absorbing alloy electrode including a hydrogen-absorbing alloy capable of absorbing and desorbing hydrogen reversibly, the electrode being characterized in that the hydrogen-absorbing alloy forms a multi-phase structure composed of at least these three phases, a main alloy phase, an alloy phase of Ti.sub.2 Ni system cubic-structure and an alloy phase of Ti-Ni system monoclinic-structure, and the main alloy phase has TiMo-based crystalline cubic-structure.

Abstract: A non-aqueous electrolyte cell having a positive electrode, a negative electrode and an electrolyte contained in a cell can, the electrolyte including a solute and an organic solvent, the solute comprising lithium trifluoromethanesulfonate. The organic solvent comprises an organic solvent mixture of at least two high boiling point solvents including at least one cyclic carbonates. The negative electrode comprises a lithium alloy. The electrolyte includes a reaction inhibitor added thereto for inhibiting reaction between the cell can and the electrolyte. Further, the lithium trifluoromethanesulfonate is heated, dried and dehydrated in a vacuum at 80.degree.-150.degree. C.

Abstract: A metal-hydrogen alkaline storage cell comprising a rare earth hydrogen absorbing alloy and positive and negative electrodes, wherein the rare earth hydrogen absorbing alloy contains praseodymium in a weight ratio of no more than about 3 weight percent based on the total weight of rare earth elements.

Abstract: A hydrogen-absorbing alloy electrode for use in an alkaline storage cell, comprising a hydrogen-absorbing alloy for reversibly absorbing and desorbing hydrogen; and a metal oxide or metal hydroxide existing in the state of a metal in a range of electric potential where said hydrogen-absorbing alloy electrochemically absorbs and desorbs hydrogen in an alkaline electrolyte.

Abstract: A solid electrolytic capacitor is disclosed wherein use is made of an electrode produced by simultaneously forming an oxide film layer and a conductive polymer layer through electrolytic oxidation or other chemical treatments on a metal subjected to a surface roughening treatment, or forming a conductive polymer layer through plasma polymerization or other chemical treatments on a metal successively subjected to surface roughening and anodic oxidation treatments.

Abstract: A hydrogen-absorbing alloy electrode comprising a hydrogen-absorbing alloy represented by a formula ANi.sub.a Co.sub.b Mn.sub.c or ANi.sub.a Co.sub.b Mn.sub.c X.sub.d, A representing a mixture of rare earth elements including La and X representing at least one element selected from a group of Fe, Cu, Mo, W, B, Al, Si and Sn, wherein 2.5.ltoreq.a.ltoreq.3.5, 0.4.ltoreq.b.ltoreq.1.5, 0.2.ltoreq.c.ltoreq.1.0, and 3.85.ltoreq.a+b+c.ltoreq.4.78 in the case of ANi.sub.a Co.sub.b Mn.sub.c or 2.5.ltoreq.a.ltoreq.3.5, 0.4.ltoreq.b.ltoreq.1.5, 0.2.ltoreq.c.ltoreq.1.0, 0<d.ltoreq.0.3 and 3.85.ltoreq.a+b+c+d.ltoreq.4.78 in the case of ANi.sub.a Co.sub.b Mn.sub.c X.sub.d, is disclosed. La is contained in a weight ratio (%) of 20.ltoreq.La.ltoreq.50 against a total weight of the rare earth elements.

Abstract: A non-aqueous secondary cell having a compound of manganese oxide, lithium salt and metal oxide as an active material of a positive electrode is disclosed. A negative electrode comprises lithium or lithium alloy. The above positive electrode improves the charge/discharge cycle characteristic and charge/discharge reversibility of the cell and can be produced at a low cost.

Abstract: A non-aqueous electrolyte cell is disclosed. As main components thereof, are employed a positive electrode having as an active material copper oxide which is obtained by pyrolyzing copper hydroxide prepared by mixing an aqueous solution of copper salt and an aqueous solution of alkali hydroxide, a negative electrode having as an active material lithium or lithium alloy and a non-aqueous electrolyte.A method of manufacturing a non-aqueous electrolyte cell is also disclosed. The method comprises a first step of producing copper hydroxide by mixing an aqueous solution of copper salt and an aqueous solution of alkali hydroxide and causing chemical reaction between the two, a second step of producing copper oxide by pyrolyzing the above copper hydroxide, and a third step of manufacturing a positive electrode employing the above copper oxide as an active material for the positive electrode.

Abstract: Hydrogen absorbing ZrMn2 alloys having MgZn2-type Laves phase structure with its Mn partially substituted by Co and containing Al as an additive and having the composition Zr(Mn1-=xCox)y Alz;Hydrogen absorbing ZrMn2 alloys having MgZn2-type Laves-phase structure with its Mn partially substituted by Co and Zr partially substituted Zr1-wTiw(Mn1-xCox)y Alz; andHydrogen absorbing alloys formed from ZrMn2 alloy having MgZn2-type Laves-phase structure or from a multicomponent alloy made therefrom by partially substituting the Zr and Mn with some other element, by further adding thereto at least one element or rare earth, Ca, and Mg.

Abstract: A non-aqueous secondary cell is provided which is repeatedly chargeable and dischargeable. This cell comprises, as main components thereof, a negative electrode, a positive electrode, and a separator disposed between the positive electrode and negative electrode and impregnated with an electrolyte. The negative electrode has lithium or a lithium alloy as the active material. The positive electrode has as the active material a manganese oxide expressed by a chemical formula Li.sub.1-X Mn.sub.2 O.sub.4 wherein 1.gtoreq.X.gtoreq.0.

Abstract: A hydrogen-absorbing alloy electrode for use in an alkaline storage cell, comprising a hydrogen-absorbing alloy for reversibly absorbing and desorbing hydrogen; and a metal oxide or metal hydroxide existing in the state of a metal in a range of electric potential where said hydrogen-absorbing alloy electrochemically absorbs and desorbs hydrogen in an alkaline electrolyte.