A fuel cell assembly including a membrane electrode assembly, an anode plate, a cathode plate, a removable fuel cartridge, and a fuel delivery system. The assembly includes an anode, a cathode, and a polymer electrolyte membrane having a fuel side and an oxygen side. The fuel cartridge includes an expandable fuel bladder for receiving liquid fuel, an expandable pressure member in contact with the bladder for maintaining a positive pressure on the bladder, and a sealable exit port in fluid communication with the bladder. The fuel delivery system delivers fuel from the cartridge to the fuel side of the membrane. An Interface, Control, and Regulator Circuit for Fuel Cell Powered Electronic Device.

Fuel cell assembly for portable electronic device and interface, control, and regulator circuit for fuel cell powered electronic device

Overview of recent developments in oxygen reduction electrocatalysis

An electrocatalyst comprising an alloy of platinum with a base metal selected from the group consisting of gallium, vanadium, chromium, manganese, iron, cobalt, nickel and copper, having a structure of vacant lattice site type lattice defects; the alloy being supported on a conductive carbon powder. The electrocatalyst is useful as a platinum-supported catalyst for an electrode, and has a superior electrochemical oxygen reduction activity and has platinum alloy particles having less base metal component.

Platinum skeleton alloy-supported electrocatalyst, electrode using the electrocatalyst, and process for producing the electrocatalyst

A fuel cell assembly including a membrane electrode assembly, an anode plate, a cathode plate, a removable fuel cartridge, and a fuel delivery system. The assembly includes an anode, a cathode, and a polymer electrolyte membrane having a fuel side and an oxygen side. The fuel cartridge includes an expandable fuel bladder for receiving liquid fuel, an expandable pressure member in contact with the bladder for maintaining a positive pressure on the bladder, and a sealable exit port in fluid communication with the bladder. The fuel delivery system delivers fuel from the cartridge to the fuel side of the membrane. The removable fuel cartridge includes a rigid fuel container having a first container portion and a second container portion permanently enclosing the expandable fuel bladder and the expandable pressure member. The first container portion and the second container portion may be permanently affixed to one another with an adhesive.

Fuel cell cartridge for portable electronic device

A catalyst for use in a fuel cell containing a platinum-aluminum alloy on a conductive carbon carrier, wherein the atomic ratio of platinum to aluminum is from 80:20 to 60:40 and the alloy is present on the carbon carrier in carbidized form with the structure of platinum-aluminum carbide Pt 3 AlC 0 .5. Also disclosed are multimetallic alloy catalysts for use as electrode catalysts in fuel cells. Catalysts with high activity and stability are obtained on the basis of carbidized platinum-aluminum alloy catalysts by adding alloying elements of the groups VIB, VIIB, VIII and IB of the Periodic Table of Elements.

Platinum-aluminum alloy catalyst for fuel cells and method of its production and use

Disclosed herein are a platinum alloy catalyst comprising an electroconductive support and platinum-nickel-cobalt alloy particles having an ordered structure supported on the electroconductive support, and a process of preparing the catalyst. The catalyst possesses higher activity and longer durability because of its ordered structure.

Electrocatalyst and process of preparing same

PURPOSE: To provide the platinum alloy electrode catalyst having the activity equal to or more than that of a conventional one, and having high durability, by making the Pt-Ni-Co ternary alloy particles having a regular structure be carried on a conductive carrier. CONSTITUTION: A 10% ammonium hydroxide aqueous solution is added to 20ml of an aqueous solution containing respectively less than 1.54mm mol of nickel formate and cobalt acetate till pH becomes 10. The mixture liquid is added to 6g of platinum carbon catalyst in which 10wt.% of platinum metallic fine particles having about 140m /g of metallic specific surface area are carried on an acetylene carbon carrier having 100m /g of a specific surface area, and is sufficiently mixed. The slurry is evaporated, solidified in dry, pulverized, and reduced for 30 minutes at 250 deg.C in 10% hydrogen (the rest is nitrogen) gas flow, to reduce the nickel salt and the cobalt salt, and further the temperature is raised to 650 deg.C and is kept for 10 hours to regularly alloy Pt, Ni and Co.

Masahiro Watanabe

Papers

Electrocatalyst and process of preparing same

Platinoid electrode catalyst and its manufacture