Fuel cell anode collector plate and fuel cell stack

Abstract

The invention discloses a fuel cell anode collector plate and a fuel cell stack, the fuel cell anode collector plate comprises corrosion-resistant plates in contact with reaction gas and cooling liquid and metal plates for collecting currents, and the corrosion-resistant plates and the metal plates are superposed to form a composite plate. The fuel cell anode collector plate is the composite plate formed by superposing the corrosion-resistant plates in contact with the reaction gas and the cooling liquid and the metal plates for collecting the currents, the metal plates form the active area, and the corrosion-resistant plates on the two sides form the non-active area; when the electric pile works, the corrosion-resistant plates in contact with the reaction gas and the cooling liquid can avoid the corrosion phenomenon, the metal plates not in contact with the reaction gas and the cooling liquid can play a role in collecting currents, and the conductivity of the metal plate is improved. The anode collector plate of the fuel cell is simple in structure, good in conductivity, high in corrosion resistance and low in cost, and the corrosion resistance of the collector plate can be improved while the performance of the cell is improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a fuel cell anode current collector plate and a fuel cell stack. Background technique [0002] A proton exchange membrane fuel cell stack is usually composed of tens to hundreds of single cells in series, and the current range is usually several amperes to hundreds of amperes when the cells are working. The anode current collector plate is a flat plate structure and is a necessary component in the PEM fuel cell stack. It is usually placed between the stack core and the floating end plate to collect current. When the stack is working, the anode current collector plate is One side of the flow plate needs to be in contact with the reactive gas and cooling liquid. [0003] The traditional anode collector plate is machined from a whole sheet of metal. Because the working environment of the stack is acidic, the coolant is slightly acidic and conductive, and it is extremely easy to c...

AI Technical Summary

Problems solved by technology

[0003] The traditional anode collector plate is machined from a whole metal plate. Since the working environment of the stack is acidic, the cooling liquid is slightly acidic and conductive. When the anode collector plate is in contact with acidic coolant, hydrogen and air, it is very easy to Corrosion occurs, and the ions or elements after corrosion are mixed in the cooling liquid, which will not only pollute the electrodes, but also cause single low problems

Images