Metal bipolar plate with graphene conducting layer and manufacturing method thereof

Abstract

The invention relates to a metal bipolar plate with a graphene conducting layer and a manufacturing method thereof. The metal bipolar plate is arranged in a fuel cell. The metal bipolar plate comprises two metal flow field plates. The two metal flow field plates are respectively an anode side metal flow field plate and a cathode side metal flow field plate. Each of the metal flow field plates is respectively a first surface and a second surface. The first surface and the second surface are respectively provided with a plurality of diversion grooves. Graphene layers are disposed on the first surface and the second surface. The anode side metal flow field plate and the cathode side metal flow field plate are combined by welding or riveting. The invention discloses a light and thin metal bipolar plate with a graphene layer and a manufacturing method thereof, and the metal bipolar plate has good ductility, corrosion resistance, electrical conductivity and high thermal conductivity.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a metal bipolar plate in a fuel cell, in particular to a metal bipolar plate with a graphene conductive layer and a manufacturing method thereof. Background technique [0002] Electric energy is the source of many power sources. Our life is closely tied to electric energy. With the rapid development of industry, clean, efficient, green and environmentally friendly power sources have always been the core of research and development by relevant technical personnel. Clean, efficient and environmentally friendly fuel cells are used as a source of electrical energy in many applications. Especially in the rapidly growing automotive industry, fuel cells are planned to replace internal combustion engines. [0003] Fuel cells used in the prior art employ solid polymer electrolyte (SPE) membranes or proton exchange membranes (PEM) to provide ion movement between the anode and cathode. In a prot...

AI Technical Summary

Problems solved by technology

[0004] The bipolar plates in the prior art are graphite bipolar plates and common metal plates. Graphite bipolar plates can effectively conduct electricity, heat conduction, corrosion resistance, and are light in weight during use. However, the thickness and conductivity of graphite bipolar plates The electrochemical reaction area ratio is not ideal, and the graphite bipolar plate has poor shock resistance and is easy to break when used, which will lead to low power generation efficiency and potential safety hazards

Although ordinary metal plates in the prior art have good shock resistance and can be made thinner, they are lower than graphite bipolar plates in terms of corrosion resistance, electrical conductivity, and thermal conductivity.

Images