TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The fuel cell system further comprises:(a) a battery set powering the control circuit;(b) a power supplying circuit for receiving and converting a direct current from the fuel cell stack into a working voltage;(c) an exhaust valve controlled by the control circuit to expel impurities and water from the fuel cell stack;(d) a first filter for removing an impurity from the air drawn by the blower;(e) a valve mounted to the hydrogen storage for selectively shutting down the hydrogen storage;(f) a first pressure sensor mounted between the hydrogen storage and the flow and pressure regulating device for detecting hydrogen pressure in a high pressure side of the flow and pressure regulating device and generating a first pressure signal corresponding to the hydrogen pressure to the control circuit;(g) a second pressure sensor mounted between the flow and pressure regulating device and the fuel cell stack for detecting hydrogen pressure in a low pressure side of the flow and pressure regulating device and generating a second pressure signal corresponding to the hydrogen pressure to the control circuit;(h) a first temperature sensor mounted between the fuel cell stack and the coolant reservoir to detect temperature of the high temperature coolant and generating a first temperature signal to the control circuit;(i) a second temperature sensor mounted between the fuel cell stack and the radiator to detect temperature of the low temperature coolant and generating a second temperature signal to the control circuit;(j) a second filter for removing an impurity from the high temperature coolant; and(k) a valve for controlling a flow rate of the coolant.The exhaust valve is a solenoid valve. The air humidifier receives humidity from the fuel cell stack and transfers the water to the air drawn by the air blower. The hydrogen storage comprises an alloy based hydrogen storage canister. The flow and pressure regulating device comprises a solenoid valve controlled by the control circuit for selectively shutting down the hydrogen flow, and a pressure regulating valve for regulating pressure of the hydrogen flow. The fuel cell stack generates a direct current output voltage that is adapted to be applied to the driving motor of an electrical vehicle.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: The coolant comprises a water containing anti-freeze agent which is preferably ethylene glycol.