Abstract: The present invention provides a sealing structure for a bipolar plate of a fuel cell. The sealing structure includes a plurality of bipolar plates and a gas guidance and reaction layer. A gas channel is placed laterally onto the bipolar plate corresponding to the gas guidance and reaction layer. A gasket is located between a bipolar plate and the gas guidance and reaction layer. A permeable portion is formed on the gasket corresponding to the gas channel. A concave surface is placed laterally on the bipolar plate corresponding to the gas guidance and reaction layer for mating with the gasket. When the bipolar plate, gas guidance and reaction layer and gasket are fastened, the deformation amount of the gasket is accurately controlled through the height limitation of the concave surface.

Abstract: The present invention provides a fuel cell, including a composite bipolar plate and gasket connecting bipolar plate. A sub-channel is assembled at a concave side of the gasket corresponding with bipolar plate. Main channels of gas running through both sides of the bipolar plate are arranged at separation positions between the bipolar plate and gas sub-channel. The main channels of gas and the gas sub-channel are connected through the channel. The airtight layer is assembled between the bipolar plate and gasket. With the airtight layer, the bipolar plate and gasket can be locked and fixed together steadily and tightly, so that the spaces of flow channels for different fuels can be definitely separated, without any leakage and mistaken mixture.