Abstract
The conventional gas diffusion layer (GDL) of polymer electrolyte membrane (PEM) fuel cells incorporates a carbon-based substrate, which suffers from electrochemical oxidation as well as mechanical degradation, resulting in reduced durability and performance. In addition, it involves a complex manufacturing process to produce it. The proposed technique aims to resolve both these issues by an advanced 3D printing technique, namely selective laser sintering (SLS). In the proposed work, polyamide (PA) is used as the base powder and titanium metal powder is added at an optimised level to enhance the electrical conductivity, thermal, and mechanical properties. The application of selective laser sintering to fabricate a robust gas diffusion substrate for PEM fuel cell applications is quite novel and is attempted here for the first time.
Highlights
Among the various fuel cell types, polymer electrolyte membrane (PEM) fuel cells are expected for future technology applications due to their versatile characteristics such as high power density, low operating temperature (60–90 ◦ C), and dynamic response [1].In addition, PEM fuel cells retain the best attributes of both batteries and internal combustion (IC)engines, making them a versatile energy conversion system [2].The membrane and electrode assembly (MEA) is the prime component/heart of a PEM fuel cell stack, and consists of an electrolyte sandwiched between two gas diffusion electrodes (GDEs)
It is apparent from the figure that gas diffusion layers (GDLs) serve as an armour to protect the principal components—namely, the catalyst layer and membrane of the PEM fuel cell stack [3]
[18], in which a drop was deposited on a sample and after stand-up for h, zoom by Zamora et al [18], in which a 20-μL drop was deposited on a sample and after stand-up for 1 h, shooting was conducted for thefor sample and the contact angleangle was measured between the droplet and zoom shooting was conducted the sample and the contact was measured between the droplet the
Summary
Among the various fuel cell types, polymer electrolyte membrane (PEM) fuel cells are expected for future technology applications due to their versatile characteristics such as high power density (compatible for transportation), low operating temperature (60–90 ◦ C), and dynamic response [1]. It is apparent from the figure that gas diffusion layers (GDLs) serve as an armour to protect the principal components—namely, the catalyst layer and membrane of the PEM fuel cell stack [3]. 1. A 2D view of aagas diffusion (GDE) indicating the catalyst layer and gas diffusion layer (GDL; comprising backing layerelectrode and mesoporous layer, MPL). GDLs (non-woven paper andcloth) carbon are functionally similar, they possessstructural different characteristics, which might significantly influence the transport of heat, current, reactant gas, and structural characteristics, which might significantly influence the transport of heat, current, reactant water. GDLs are typically composites and comprise material to gas, and water. GDLs areporous typically porous composites andcarbon-based comprise carbon-based enhance the electrical conductivity and polytetrafluoroethylene (PTFE). To improve hydrophobicity material to enhance the electrical conductivity and polytetrafluoroethylene (PTFE) to improve characteristics.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
