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The Difference Between Carbon Paper And Carbon Cloth

Feb 21,2022.

The Difference Between Carbon Paper And Carbon Cloth

Carbon paper(CNT) and carbon cloth are two types of carbon fiber products.Often used as a gas diffusion layer (GDL),It is widely used in fuel cell PEM.GDL plays a very critical role in fuel cells, including: protecting and supporting catalysts, conducting electricity, conducting gas, and expelling water.

What is the difference between carbon paper and carbon cloth?
In terms of technology, carbon paper is processed by non-woven, and carbon cloth is processed by spinning.Structurally, carbon cloth has a porous structure and a rougher surface, and carbon paper has a smoother surface.Both can be used as GDL gas diffusion layers in fuel cells.

At present, in industrial-scale use, carbon paper is mostly used, and in the field of laboratory scientific research, carbon cloth is mostly used.

carbon cloth

Studies have shown that carbon paper works better than carbon cloth under conditions of lower humidity.The reason is that the structure of carbon paper is more tortuous than carbon cloth, which prevents moisture loss and reduces ohmic losses.Under the condition of high humidity and low current density (less than 0.6A/cm2), there is no difference between the two effects.

Under the condition of high current density (higher than 0.6A/cm2), the effect of carbon cloth is better than that of carbon paper,The reason is that carbon cloth has a more porous structure and lower curvature than carbon paper, and the surface is rough, which is conducive to the separation of water.
AOT supplies high-quality carbon paper, carbon cloth, and other lithium battery material.