摘要:
A fuel cell electrode having a catalyst layer (5, 10) comprising electroconductive particles carrying a catalytically active component and a binder on a water-repellent baked plate (4, 9) comprising a carbon paper comprising carbon fiber and an organic binder and polytetrafluoroethylene infiltrated into voids of said carbon paper, characterized in that the carbon fiber of said baked plate (4, 9) has at least 20 cutting edges per square millimeter, and said polytetrafluoroethylene is infiltrated into at least one of said cutting edges to render the plate (4, 9) flexible.
摘要:
jn a fuel element for a liquid fuel cell, the liquid fuel is rendered to assume a non-fluidized state by physical or chemical means, and is returned back to the initial liquid fuel at any time by physical or chemical means.
摘要:
A methanol fuel cell includes an electrolyte ion exchange membrane (1) integrated with an oxidizer electrode (3) containing water-repellent particles on one side of the membrane (1) and a hydrophilic fuel electrode (2) containing no water-repellent particles on the other side thereof, with less contact resistance between the ion exchange membrane (1) and the electrodes (2, 3) and a three-phase boundary readily formable in the oxidizer electrode (3).
摘要:
A material for the negative electrode of a lithium secondary battery is composed of graphite having a particle size up to 100 µm and being obtained by pulverising natural graphite crystals, at least 80% by weight of the particles having a hexagonal structure or both a hexagonal structure and a rhombohedral structure. The material has a lithium deintercalation capacity of at least 320 mAh/g.
摘要:
The object of the present invention is to provide a carbon material having superior reversibility in lithium intercalation/de-intercalation reaction, and a non-aqueous secondary battery using the carbon material as an active material for its negative electrode, which has a high energy density and excellent rapid charging and discharging characteristics. Graphite powder having a maximum particle diameter of less than 100 µm and less than 20 % of rhombohedral structure in the crystalline structure is used as an active material for the negative electrode of the non-aqueous secondary battery. The graphite powder can be obtained by pulverising raw graphite with a jet mill and subsequently treating the powder at a temperature equal to or higher than 900 °C.
摘要:
The present invention provides a distributed secondary battery type power storage system capable of maintaining the soundness of the secondary battery and of efficient electric power charging and discharging operations. The secondary battery power storage system comprises a secondary battery connected to a load, a charge/discharge unit connectable to a power system and connected to the secondary battery, and a plurality of loads connected to the charge/discharge unit. A power receiving object is selected and a capacity is determined on the basis of information about the operating condition of the plurality of loads, and the surplus electric power remaining in the secondary battery after feeding electric power from the secondary battery to the load is fed to the selected power receiving object through the charge/discharge unit. The secondary battery power storage system is capable of maintaining the soundness of the secondary battery and of efficient charging and discharging operation.
摘要:
The polymer electrolyte type hydrogen-oxygen fuel cell of the present invention comprises an oxygen electrode (72, 73) and a hydrogen electrode (74), a polymer electrolyte membrane (71) provided between the oxygen electrode (72, 73) and hydrogen electrode (74) and electron conductors (75) provided on the side of the electrodes which is opposite to the electrolyte side and the oxygen electrode (72, 73) comprises a catalytically active component, a carrier for the catalytically active component and a binder and has such a gradient in water repellency across the thickness that the water repellency is highest in the area adjacent to the electrolyte (71) and lowest in the area adjacent to the conductor (75). In this fuel cell, flooding of water at the interface between the oxygen electrode (72, 73) and the electrolyte (71) can be prevented.
摘要:
A methanol fuel cell includes an electrolyte ion exchange membrane (1) integrated with an oxidizer electrode (3) containing water-repellent particles on one side of the membrane (1) and a hydrophilic fuel electrode (2) containing no water-repellent particles on the other side thereof, with less contact resistance between the ion exchange membrane (1) and the electrodes (2, 3) and a three-phase boundary readily formable in the oxidizer electrode (3).
摘要:
A methanol fuel cell wherein a positive electrode (2) and a negative electrode (1) are disposed in contact with a solid film (3) which exhibits a hydrogen ion- and/ or hydronium ion-conductivity. The methanol permeability coefficient of the solid film (3) of the methanol fuel cell is at most 1 x 10- 6 mol/mol/ℓ).min.cm 2 .