Zeon Corporation

Koji Hoshiba

Eitaro Nakamura

Disclosed is an electrode for a lead storage battery that has good initial output characteristics and causes little or no reduction in output characteristics after charge-discharge cycle. The electrode comprises an electrode active material layer and a current collector. The electrode active material layer comprises a layer containing a lead-containing material as an electrode active material and a layer containing a porous carbonaceous material as an electrode active material. The electrode satisfies a requirement represented by the following equation: B/(A+B)&#xd7;100=1.0 to 90.0% wherein A represents the weight of lead atoms contained in the electrode active material layer; and B represents the weight of the porous carbonaceous material contained in the electrode active material layer. The density of the layer containing the porous carbonaceous material is 0.40 to 0.80 g/cm. Also disclosed is a lead storage battery using the electrode in at least one of a positive electrode and a negative electrode.

Lead acid battery electrode comprising a porous carbon material layer and a lead acid battery

The object of the present invention is to improve the short-term discharge power after the thermal cycles, as the object of the improvement of the characteristics of the lead acid battery. An electrode for a lead acid battery comprising an electrode active material layer comprising a lead containing material, a porous carbon material and a binder, and a current collector, wherein when a weight of lead atom is A and a weight of porous carbon material is B, B/(A+B)&#xd7;100 satisfies 1.0 to 90%; and said binder is a crystalline polymer having a melting temperature of 40&#xb0; C. or less or amorphous polymer, is used.

Electrodes for a lead acid battery and the use thereof

The present invention provides a binder for an electrode of a non-aqueous electrolyte secondary battery comprising a copolymer, wherein the copolymer contains 0.0005&#x2dc;0.05 moles of group of an acid having nitrogen family element or chalcogen element or 0.0005&#x2dc;0.05 moles of group of salts of the acid per 100 g of the copolymer. The binder exhibits excellent dispersion of an active material for an electrode. The invention also provides an electrode for a non-aqueous electrolyte secondary battery, in which the active material layer formed by the composition for an electrode containing the above binder and the active material for an electrode is adhered to the current collector, in which the active material for an electrode is densely-filled, and which exhibits excellent surface smoothness.

Binder for electrode of non-aqueous electrolyte secondary battery, electrode, and non-aqueous electrolyte secondary battery

Composite particles for an electrochemical device electrode containing an electrode active material, a conductive material, and a binder, wherein primary particles of the composite particles have a volume average particle size of 1 to 500 &#x3bc;m and, when a relative particle amount of the primary particles having a particle size of a fine range near a mode radius Rof the primary particles in the particle size distribution of the primary particles of the composite particles found by the volume standard is &#x3c1;and a relative particle amount of secondary particles having a particle size of the fine range in the particle size distribution of the secondary particles of the composite particles found by the volume standard in measurement at 23&#xb0; C. is &#x3c1;is 0.03 to 0.60.

Composite particles for electrochemical device electrode, method of production of composite particles for electrochemical device electrode, and electrochemical device electrode

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Tokyo, Japan

Koji Hoshiba