NOVELTY - A fuel cell system (10) comprises an anode compartment (12) which comprises an anode (16) having a copper catalyst layer (50), a cathode (18) configured as an air cathode, and a separator (20) interposed between the anode and cathode. The fuel cell is operable by an amine-derived fuel and oxygen.    USE - Fuel cell system is used for powering electricity-consuming device used in systems, and for vehicles (all claimed). Uses include but are not limited to portable telephones, personal computers, portable charging docks, pagers, personal digital assistants, digital cameras, gameplayers, smoke detectors, hearing aids, night vision goggles, portable global positioning system devices, portable lighting devices, toys, computer peripheral devices, household appliances, cordless household appliances, industrial products, robots, cordless tools, cars, forklifts, motorcycles, mobility scooters, saddle-ride type vehicles, lawn mowers, autonomous pool cleaners, aircraft, high altitude aircraft, rockets, spacecraft, cogeneration systems and stationary power plants, emergency kits, emergency power supplies, emergency lights, and backup generators.    ADVANTAGE - The fuel system uses available, safe and economical components, while efficiently acting as power source. The fuel cell shows high electrical efficiency for long periods of continuous operation. The fuel cell system is compact and lightweight, and can be used in combined heat and power systems. The fuel cell systems can be used to generate electric power, and at the same time produce hot air and water from the waste heat.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) method of operating the fuel cell system, which involves contacting the anode compartment with an anode solution comprising an amine-derived fuel, contacting the cathode with oxygen, and electrochemically reacting fuel and oxygen;    (2) method of powering an electricity-consuming device by using the fuel cell system; and    (3) system consisting of an electricity-consuming device, electrical energy storage device(s) arranged for powering the electricity-consuming system, and the fuel cell arranged for charging the electrical energy storage device(s).    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the fuel cell.    Fuel cell system (10)    Anode compartment (12)    Anode (16)    Cathode (18)    Separator (20)    Oxidant (46)    Catalyst layer (50,54)    Solid electrolyte membrane (58)