Carbon/Graphite Sheets/PTFE-Coated Porous Titanium as the Bipolar Plate by Hydrothermal Treatment
Source abstract
Abstract
A multilayered carbon–-Polytetrafluoroethylene/graphite sheet (C-PTFE/GS) coating is synthesized on a Ti plate by hydrothermal and immersion method. The innermost layer is composed of amorphous carbon and the outermost layer is made of a compound with PTFE, graphite sheets and nanotube. Interfacial contact resistance (ICR) decreases to 8.9 mΩ·cm−2 at the applied force of 1.4 MPa between carbon paper and the substrate with coating. The corrosive current density is only 0.49 μA/cm2 at the cathode, while the potential of 0.6 V is applied. The charge transfer resistance of the multilayer carbon coating is higher than that of a bare sample through the results of electrochemical impedance spectroscopy. Moreover, there are no obvious changes in the coating before and after potentiostatic polarization testing by X-ray photoelectron spectroscopy (XPS) analysis, which demonstrates the stability of multilayered C-PTFE/GS coating on Ti. In addition, the surface morphology of C-PTFE/GS coating is preserved without defect after potentiostatic polarization in a simulated environment of proton exchange membrane fuel cells (PEMFCs). Therefore, the C-PTFE/GS coating is potentially applied as bipolar plates in PEMFCs.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fuel Cells and Related Materials · MXene and MAX Phase Materials · Electrocatalysts for Energy Conversion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
College of Communication and Electronics, Jiangxi Science and Technology Normal University, Nanchang 330038, China
Funding
Natural Science Foundation of Jiangsu Province
References (29)
Show source-provided references
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