Kawasaki Jukogyo Kabushiki Kaisha

National Institute of Advanced Industrial Science and Technology

Osaka Gas Company Limited

Kazuo Tsutsumi

Kazuya Nishimura

Tetsuo Sakai

Takashi Mukai

Tomoaki Takasaki

Jinhan Yao

Tomoaki Takada

Takahiro Matsumura

Chiyoharu Tonda

Tsutomu Iwaki

Atsushi Tsutsumi

Toshio Atsuta

Chikanori Kumagai

Mitsuharu Kishimoto

Fumiya Goto

Susumu Mitsuda

Masateru Nakoji

Toshinori Muraoka

Makoto Saito

Tadashi Katahata

Tarou Kawamura

Yasufumi Sakakida

Takahito Tanigawa

Disclosed is a nickel positive electrode for a fiber battery having a long life duration, and also being enabling a high output and high capacity to be attained. For this purpose, the nickel positive electrode for a fiber battery is obtained by coating a carbon fiber with nickel, then causing a cathodic polarization in a nickel nitrate bath using the nickel-coated carbon fiber as a cathode, and then immersing the precipitate, which was deposited on the surface of the carbon fiber by the cathodic polarization, in an aqueous caustic alkali solution.

Nickel positive electrode for fiber battery

A battery system is configured by connecting a plurality of battery modules in series, and each of the plurality of battery modules is configured by stacking a plurality of unit batteries. A connecting terminal through which electricity is obtained is provided between a positive electrode terminal and a negative electrode terminal of at least one of the plurality of battery modules.

Battery system, power supply system for electric railcars, and battery module

A secondary battery includes: a fiber negative electrode having a surface on which a negative electrode active material coating is formed, the coating containing a compound of AMXZ; a fiber positive electrode including a positive electrode active material coating containing nickel hydroxide; an aqueous electrolyte solution; and a separator. The negative electrode coating has an uncoated surface. A is selected from the group consisting of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, and Ba; M is selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Ru, Pd, Ag, Ta, W, Pr, Sm, Eu, and Pb; X is selected from the group consisting of B, Al, Si, P, S, Ga, and Ge; Z is selected from the group consisting of O, S, N, F, Cl, Br, and I; and 0&#x2266;a&#x2266;6, 1&#x2266;b&#x2266;5, 0&#x2266;c&#x2266;4, 0&#x3c;d&#x2266;12, and 0&#x2266;a/b&#x2266;4.

Negative electrode for use in secondary battery and secondary battery including the same

An object of the present invention is to provide a highly efficient electrical storage device that uses a fiber positive electrode and a fiber negative electrode and in which lithium ion is used as an intercalating species, and to provide a method of fabricating the electrical storage device. The electrical storage device according to the present invention includes: a fiber positive electrode including an electrically conductive fiber, the fiber having a surface on which a positive electrode active material coating is formed, the positive electrode active material coating containing a transition metal oxide represented by a chemical formula 1 which is (LiA)MXO; a fiber negative electrode including an electrically conductive fiber, the fiber having a surface on which a negative electrode active material coating is formed; a separator; and an electrolyte (in the chemical formula 1, A is at least one kind of alkali metal selected from the group consisting of Na, K, Rb, and Cs; M is at least one kind of transition metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Ru, Pd, Ag, Ta, W, Ce, Pr, Sm, Eu, and Pb; X is at least one kind of typical elements selected from the group consisting of B, Al, Si, P, S, Ga, and Ge; and 0&#x3c;a&#x2266;6, 1&#x2266;b&#x2266;5, 0&#x2266;c&#x2266;4, 0&#x3c;d&#x2266;12, 0&#x2266;a/b&#x2266;4, and 0&#x2266;x&#x2266;0.5).

Electrical storage device including fiber electrode, and method of fabricating the same

Provided is a method for mass manufacturing, at low cost, of a fiber positive electrode for a lithium secondary battery, which has excellent charge/discharge cycle characteristics, and which is capable of charging/discharging with high current density, and a main active material of which is a lithium-doped transition metal oxide. The method includes the steps of: (a) forming a tubular coating of either a transition metal oxide or a transition metal hydroxide on a carbon fiber current collector; and (b) performing, in a lithium ion containing solution in a sealed system under presence of an oxidant or a reductant, heat treatment at 100 to 250&#xb0; C. on the carbon fiber current collector, on which the tubular coating of either the transition metal oxide or the transition metal hydroxide is formed, to obtain a coating of a lithium-doped transition metal oxide on the carbon fiber current collector. Further provided are: a fiber negative electrode for a lithium secondary battery, which has high current density, high energy density, and excellent charge/discharge cycle characteristics, and which can be fabricated in a relatively easy manner; and a method for fabricating the fiber negative electrode. The fiber negative electrode for a lithium secondary battery includes: (c) a carbon fiber current collector; (d) an outer layer which is a tubular composite layer of a Sn oxide and MOformed on the carbon fiber current collector; and (e) an intermediate layer formed of a Sn alloy, which has a lithium occlusion capacity and which is present at an interface between the carbon fiber current collector and the outer layer. The method for fabricating the fiber negative electrode for a lithium secondary battery includes: forming a coating of one of Sn and a Sn alloy, and a coating of at least one kind of metal selected from the group consisting of Fe, Mo, Co, Ni, Cr, Cu, In, Sb, and Bi, on a carbon fiber current collector by an electroplating method; and then performing heat treatment on the carbon fiber current collector under a trace oxygen atmosphere at 350 to 650&#xb0; C. Moreover, the lithium secondary battery includes: the fiber positive electrode and the fiber negative electrode fabricated in the above methods; and an electrolyte.

Fiber electrode for lithium secondary battery, fabrication method therefor, and lithium secondary battery including fiber electrode

A power conditioner for a feeding system which stabilizes a load of active power is provided. A power conditioner for a feeding system comprises a first AC-DC and DC-AC converter for performing conversion between AC power and DC power; and a nickel-metal hydride battery disposed between and connected to a high-voltage cable at DC side of the first AC-DC and DC-AC converter and a low-voltage cable at the DC side of the first AC-DC and DC-AC converter.

Power conditioner for feeding system

To present an electric railway power-supply system not requiring vast area for installation, excellent in rapid charge-discharge characteristic, and low in manufacturing cost. At a substationfor electric railway having a transformerfor receiving power from an alternating-current power line, a rectifying deviceconnected to the transformer, and a feeder lineconnected to the rectifying device, a nickel hydrogen batteryis provided as a direct-current supply facility, and the nickel hydrogen batteryis directly coupled to the feeder line

Electric railway power-supply system

A sealed rectangular battery excellent in volumetric efficiency and pressure resistance is provided. The sealed rectangular battery includes an electrode group having a positive electrode and a negative electrode and a cell casing for accommodating therein the electrode group and an electrolyte solution, which casing includes a rectangular frame member, a first lid member and a second lid member. Each of the first and second lid members includes a body portion for covering one of the openings of the frame member, and a side portion formed so as to protrude from the body portion substantially along at least one set of sides opposite to each other.

Sealed battery to withstand internal pressures and battery module using same

Sealed battery having rectangular frame member and battery module using same

At least two types of active materials having different charge and discharge characteristics are combined and incorporated into a same cell to provide a battery. The active materials having different charge and discharge characteristics to be incorporated have any form without limitation to a particulate shape, a plate, a rod or the like. The active materials having different charge and discharge characteristics are incorporated into either or both of the cathode and the anode.

Hybrid battery

A battery comprising powdered active materials and capable of storing a large power, and equipment or device having the battery as parts of its structure, wherein an anode cell ( ) of two vessels connected via an ion-passing separator ( ) is filled with an anode powdered active material and an electrolytic solution ( ), a cathode cell ( ) is filled with a cathode powdered active material and an electrolytic solution ( ) and conductive current collectors ( ) in contact with the powdered active materials are provided in the two vessels.

Battery and equipment or device having the battery as part of structure and locally distributed power generation method and power generation device therefor

A fluidized-bed denitrating method and a fluidized-bed denitrating device are disclosed which are capable, of effectively denitrating a combustion exhaust gas by oxidizing nitrogen monoxide occupying the major portion of NO.sub.x contained in the combustion exhaust gas to nitrogen dioxide which can be reduced at high reduction reaction rate by the oxygen contained in the combustion exhaust gas, and by reducing the nitrogen dioxide by fine carbon particles adhered to fine particles of a fluid medium. A combustion exhaust gas containing at least nitrogen monoxide and oxygen is introduced into a fluidized bed of a fluid medium consisting of fine particles with fine carbon particles adhered thereto. The fine particles of the fluid medium adsorb the nitrogen monoxide, the nitrogen monoxide is oxidized on the surfaces of the fine particles of the fluid medium to nitrogen dioxide, and the nitrogen dioxide is then decomposed into carbon dioxide and nitrogen by the reducing function of the fine carbon particles. The particle sizes of the fine particles of the fluid medium are in the range of 30 to 500 .mu.m, and the particle sizes of the fine carbon particles are 3 .mu.m or below.

Fluidized-bed denitrating method

Waste materials including chlorine compounds are charged into a fluidized-bed gasification furnace having a first fluidized bed of which fluidizing medium comprises CaO. HCl produced from the waste materials is reacted with CaO which is the fluidizing medium and changed into CaCl.sub.2, and then discharged from a discharge pipe together with unburned materials. Gas generated as a result of the above-described reaction flows together with CaCO.sub.3, which is supplied into a second fluidized bed of a fluidized-bed combustion furnace located above, and are burned within the second fluidized bed. CaO is supplied from the second fluidized bed into the first fluidized bed via a supply pipe. In this manner, HCl produced from the waste materials is effectively removed.

Growing community of inventors

Kobe, Japan

Kazuo Tsutsumi