Commonly used matrix materials for fuel cell gas diffusion layers are:
Charcoal paper. Carbon paper is a functional paper with a certain fiber content. Its production process is to mix chopped carbon fiber and adhesive and obtain it through staining, molding, curing, carbonization, graphitization and other processes. It can be used for fuel cell gas diffusion. It is a layer of functional paper, and the graphitization treatment is to make the carbon paper have good electrical conductivity, thermal conductivity and thermal stability. Carbon paper is a fiber skeleton, so it has a porous structure and can be used as a material for gas diffusion layers. However, the overall strength of carbon paper is low and it is prone to deformation and breakage, which has become a research hotspot at this stage.

Carbon fiber cloth. Also known as carbon fiber woven cloth, carbon cloth, carbon fiber prepreg cloth, etc. Carbon fiber cloth has the characteristics of high strength, low density, thin thickness, etc. It also has high durability and is suitable for environments such as acid, alkali, salt and atmospheric corrosion.
High-performance carbon paper has increasingly higher performance requirements for carbon paper and carbon cloth used in fuel cells. Among them, low-temperature carbonization, medium-temperature carbonization, high-temperature carbonization and ultra-high temperature graphitization are one of the key steps in modifying carbon paper. Our company In long-term cooperation with relevant domestic scientific research institutions and enterprises, we have developed an integrated gap experimental furnace suitable for high-temperature treatment of carbonization and graphitization of carbon paper and carbon cloth, and a large-scale production-type carbon paper and carbon cloth continuous furnace.

The carbonization and graphitization furnace of carbon paper and carbon cloth for fuel cells has the following characteristics: