NOVELTY - Fuel cell bipolar plate (10) has first plate (11) and second plate (12) bonded to each other so that hydrogen flow field (13) is positioned on portion of top surface of bipolar plate and air flow field (14) is positioned on portion of bottom surface of bipolar plate with coolant flow field (15) positioned at position between hydrogen flow field and air flow field. Material layer or layers e.g. air gap (16) are formed at position or positions above land portion of second plate to reduce amount of accumulated water of land portion by increasing temperature of land portion.    USE - Fuel cell bipolar plate for preventing occurrence of flooding of fuel cell used in motor vehicle. Uses include but are not limited to passenger automobiles including sports utility vehicles (SUV), buses, trucks, commercial vehicles, watercraft including variety of boats and ships, aircraft, hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen- powered vehicles and other alternative fuel vehicles e.g. fuels derived from resources other than petroleum.    ADVANTAGE - Reduces total amount of liquid water stored in a fuel cell, prevents occurrence of flooding to improve the performance of the fuel cell in normal state and transient state, and reduces time and energy required for cold start since air gap or material layer having heat transfer coefficient lower than the heat transfer coefficient of bipolar plate is used in designing coolant flow field of the bipolar plate to locally increase the temperature of area in which liquid water is easily stored and flooding occurs. Prevents water from being accumulated since bipolar plate is applied to any other area in which excess water is present based on position and design of the bipolar plate. Provides fuel cell bipolar plate that uniformly controls the temperature of bipolar plate and prevents accumulation of liquid water and occurrence of flooding. Provides stability of the system and precise control since flow of a gaseous material having high reactivity and high system stability compared with the conventional liquid water accumulation is ensured. Reduces purge energy required during system shut-down and ensures good cold start-ability by reducing the thermal mass of cooling plate. Increases power per weight of the fuel cell and improves performance of the fuel cell. Prevents occurrence of deterioration caused by carbon corrosion in the catalyst layer by preventing fuel exhaustion of hydrogen electrode that occurs during start-up or normal operation. Reduces time required for cold start at low temperatures or at sub zero temperatures by decreasing residual water and thermal mass. Eliminates non-uniformity of gas flow on the flow field by reducing the amount of liquid water on gas flow field. Reduces voltage reversal and performance deterioration during normal operation or during transient load operation of the fuel cell by reducing the pressure drop. Prevents occurrence of flooding, reduces time required for cold start, enhances durability, decreases parasitic purge requirements, and enhances operational stability by providing air gap or material layer having heat transfer coefficient lower than the heat transfer coefficient of bipolar plate to reduce total amount of liquid water generated in fuel cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a fuel cell bipolar plate.    Bipolar plate (10)    First plate (11)    Second plate (12)    Hydrogen flow field (13)    Air flow field (14)    Coolant flow field (15)    Air gap (16)