Abstract: In order to provide a nonaqueous electrolyte secondary battery negative electrode material that has an excellent discharging capacity, the charge/discharge efficiency and the charge load characteristics, a manufacturing method thereof, a nonaqueous electrolyte secondary battery negative electrode with the negative electrode material and a nonaqueous electrolyte secondary battery, the invention provides a nonaqueous electrolyte secondary battery negative electrode material including graphite particles that have a block-like structure where a plurality of flat graphite fine particles assembles or bonds non-parallel with each other, the aspect ratio of 5 or less and a volume of fine pores in the range of 10 to 105 nm in a volume of 400 to 2000 cm3/kg; and a layer of carbon formed on a surface of the graphite particle, wherein a ratio (by weight ratio) of the layer of carbon to the graphite particle is in the range of 0.001 to 0.

Abstract: The present invention provides a non-aqueous electrolyte secondary cell that has good high-temperature cycle characteristics and good high-temperature standing resistance, and that is highly safe enough to prevent overcharge. The non-aqueous electrolyte secondary cell of the invention utilizes a non-aqueous electrolyte that includes a vinylene carbonate derivative, a cyclic sulfite derivative, and both/either of a phenylcycloalkane derivative and/or an alkylbenzene derivative having a quaternary carbon directly bonded to a benzene ring.

Abstract: In order to provide a nonaqueous electrolyte secondary battery negative electrode material that has an excellent discharging capacity, the charge/discharge efficiency and the charge load characteristics, a manufacturing method thereof, a nonaqueous electrolyte secondary battery negative electrode with the negative electrode material and a nonaqueous electrolyte secondary battery, the invention provides a nonaqueous electrolyte secondary battery negative electrode material including graphite particles that have a block-like structure where a plurality of flat graphite fine particles assembles or bonds non-parallel with each other, the aspect ratio of 5 or less and a volume of fine pores in the range of 10 to 105 nm in a volume of 400 to 2000 cm3/kg; and a layer of carbon formed on a surface of the graphite particle, wherein a ratio (by weight ratio) of the layer of carbon to the graphite particle is in the range of 0.001 to 0.

Abstract: The present invention provides a non-aqueous electrolyte secondary cell that has good high-temperature cycle characteristics and good high-temperature standing resistance, and that is highly safe enough to prevent overcharge. The non-aqueous electrolyte secondary cell of the invention utilizes a non-aqueous electrolyte that includes a vinylene carbonate derivative, a cyclic sulfite derivative, and both/either of a phenylcycloalkane derivative and/or an alkylbenzene derivative having a quaternary carbon directly bonded to a benzene ring.

Abstract: The battery has an electrode assembly inserted into a cylindrical external case. A lead plate connected to the electrode assembly is weld attached to the inner surface of the external case by an energy beam applied from outside the external case. The external case has a projection jutting from its inner surface. The energy beam is applied to the projection from outside the external case and weld attaches the lead plate to the inner surface of the projection.

Abstract: The battery has an electrode assembly inserted into a cylindrical external case. A lead plate connected to the electrode assembly is weld attached to the inner surface of the external case by an energy beam applied from outside the external case. The external case has a projection jutting from its inner surface. The energy beam is applied to the projection from outside the external case and weld attaches the lead plate to the inner surface of the projection.

Abstract: A cadmium negative electrode capable of enhancing a utilization rate of metallic cadmium contained therein as an active material in charged state. In the cadmium negative electrode, a mixture paste of a main active material in form of cadmium oxide or cadmium hydroxide and metallic cadmium powder containing yttrium component is deposited on a metallic active material retention substrate.

Abstract: An alkaline storage battery including a bottomed cell casing assembled as either one of positive and negative terminals, a closure cap assembly coupled with an opening of the cell casing in a liquid-tight manner as the other terminal to hermetically seal the interior of the cell casing and a generator element composed of positive and negative electrodes assembled within the cell casing, wherein a current collecting plate extended from either one of the positive and negative electrodes is welded at least at two spaced portions thereof with a bottom surface of the closure cap assembly to enhance mechanical strength and the vibration resistance property of the storage battery and to reduce internal resistance of the storage battery.

Abstract: Disclosed is a method for activating a cell employing a non-sintered type nickel positive electrode. The electrode has metallic cobalt powder and either nickel oxyhydroxide in the range of 60 wt % or less excluding 0 wt % or dischargeable higher oxidized cobalt compound powder whose cobalt has a valence of three or more in the range of 60 wt % or less excluding 0 wt %. The method comprising the steps of resting the cell until the positive electrode potential becomes substantially equal to the equilibrium potential of Co/Co(OH).sub.2, and performing initial charging of the cell, following the resting step.

Abstract: The present invention discloses a method for activating an alkaline storage cell comprising a non-sintered type nickel positive electrode comprised of a metallic cobalt powder. The method comprises a first step for fabricating the alkaline storage cell, a second step for charging the fabricated storage cell is charged with the charging amount of 1000 mAH or lower than the same per 1 g of the metallic cobalt powder included in the positive electrode, a third step for resting the charged storage cell, and a fourth step for applying an initial charging/discharging operation is applied to the storage cell which was rested at the third step.

Abstract: A paste-type cadmium electrode for use in an alkaline storage cell, comprising a conductive substrate, an active material layer mainly comprising cadmium oxide and formed on a surface of the conductive substrate, and a conductive layer or a nickel body formed on a surface of the active material layer.The conductive layer either has therein powdered carbon and powdered alkali-resistant metal having a surface area of 0.001 to 0.5 m.sup.2 against 1 g of the active material; comprises powdered carbon, a binder and powdered alkali-resistant metal having an apparent density of 0.2 g/cc or less; or comprises a first conductive layer formed on a surface of the active material layer and comprising powdered alkali-resistant metal and a binder, and a second conductive layer formed on a surface of the first conductive layer and comprising powdered carbon and a binder.The nickel body is dispersed on a surface of the active material layer, the nickel body comprising fiber-type nickel having an average fiber diameter of 1 .

Abstract: A cadmium non-sintered negative electrode for use in an alkaline storage cell comprising a main active material comprising at least one of powdered cadmium oxide and powdered cadmium hydroxide; a reserve charging substance comprising powdered metal cadmium; and an additive comprising powdered nickel hydroxide whose grain shape is substantially globe and/or whose average grain size is 1.5 to 200 .mu.m.

Abstract: A rechargeable alkaline storage cell comprises, as main components thereof, a negative electrode, a positive electrode and an electrolyte. The negative electrode is formed of sintered type cadmium electrode including one of a polysaccharide and its derivative having a polymerization degree of more than 320.

Abstract: A cadmium non-sintered negative electrode for use in an alkaline storage cell comprising a main active material comprising at least one of powdered cadmium oxide and powdered cadmium hydroxide; a reserve charging substance comprising powdered metal cadmium; and an additive comprising powdered nickel hydroxide whose grain shape is substantially globe and/or whose average grain size is 1.5 to 200 &mgr;m.