A Comprehensive Fractal Approach in Determination of the Effective Thermal Conductivity of Gas Diffusion Layers in Polymer Electrolyte Membrane Fuel Cells

Mechanism and Model for Optimizing Polytetrafluoroethylene Distribution to Improve the Electrical and Thermal Conductivity of Treated Carbon Fiber Paper in Fuel Cells

“…In previous studies, researchers were mainly in the virtue of experimental methods, simulation methods, or a combination of the two means to study the conduction characteristics of CFP. In the studies of CFP through experiments, the pristine carbon paper is usually treated using a variety of methods, and then, the electrical and thermal conductivities or single-cell testing are used to characterize the properties of CFP. − These studies have been developed from simple to complex using simulation methods. − In the early research term, the electrical and thermal properties of CFP were regarded as a homogeneous phase for simulation . Then, researchers considered the gradient characteristics or the anisotropy of CFP, making the model more complicated. ,, It is recently assumed that CFP is a model of carbon fiber-layered stacked structure, and the characteristics of CFP are simulated. ,, It is a widely used method that a complex CFP structure is abstracted and reconstructed as a carbon fiber-layered physical model through reasonable assumptions.…”