Wire rod coating process of gas diffusion layers fabrication for proton exchange membrane fuel cells

Development of carbon nanotubes based gas diffusion layers by in situ chemical vapor deposition process for proton exchange membrane fuel cells

“…For comparison purposes, GDL samples were also fabricated by wire-rod coating method using carbon slurry (75 wt.% Pureblack carbon and 25 wt.% nano-fibrous carbon (VGCF) with PTFE dispersion (25 wt.%)) as described in our earlier publication [22]. The surface morphology of the GDL samples was examined by JEOL JSM-5900LV Scanning Electron Microscope.…”

Gas Diffusion Layers for Proton Exchange Membrane Fuel Cells Using In situ Modified Carbon Papers with Multi‐walled Carbon Nanotubes Nanoforest

“…The carbon slurry was coated onto the non-woven carbon paper substrates (both GD07508T and GDL07508G) using Easycoater equipment (EC26, Coatema) with the velocity of 3 m min -1 by a wire-rod method. The wire-rod coating is a process for fabricating the mirco-porous layer on the carbon paper substrate by a single pass, as described in detail by Kannan et al [21]. Catalyst-coated membranes (CCMs) were fabricated with a 5 cm 2 geometric area using a microspray technique with commercially available catalyst and membranes.…”

Effect of carbon paper substrate of the gas diffusion layer on the performance of proton exchange membrane fuel cell

“…In order to get the homogenous carbon slurry, Novec-7300 fluid (1 ml for 1 g of carbon) was added. The carbon slurry was coated onto the non-woven carbon paper substrates using Easycoater equipment (EC26, Coatema) with the velocity of 3 m min −1 as depicted by Kannan et al [10]. The carbon loading on the micro-porous layer was controlled by the slurry composition and the wire thickness on the wire rod.…”

“…Fabrication of membrane electrode assembly (MEA) consisting of commercial catalyst (Pt/C) coated on both anode and cathode sides of the Nafion-212 membrane (Ion Power Inc., New Castle, DE, USA) was reported elsewhere [10]. Briefly, catalyst ink was prepared by adding isopropanol (20 cc for 1 g of electrocatalyst) after purging the Pt/C catalyst powder (TKK, Japan) in flowing nitrogen gas for about 30 min to avoid any flame/ignition.…”

“…: +1 480 7271102; fax: +1 480 7271723. on the top of macro-porous carbon paper or cloth substrates [7,8]. The porosity of GDLs are directly controlled by the amount of PTFE [9,10]. In general, the overall porosity of the GDLs, which influence the fuel cell performance, is manipulated by composition as well as fabrication methods of the micro-porous layers [11][12][13].…”