Corrosion protection of type 304 stainless steel bipolar plates of proton-exchange membrane fuel cells by doped polyaniline coating

Electrodeposition of self-doped copolymers of aniline with aminobenzensulfonic acids on stainless steel. Morphological and electrochemical characterization

“…The Nyquist plots exhibit a depressed semicircle at high frequencies (HF) and a straight line at low frequencies (LF). These impedance spectra are characteristic of the conducting EM state [46][47][48]. The EIS spectra can be represented by the equivalent electrical circuit shown in the inset of Fig.…”

“…The value of n 2~0 .95 related with the capacitive bahavior of the system denotes the high capacitive character of the SS|P(An-co-ABSA) electrodes. The capacitive character of PAn films deposited on SS was found to depend on several factors, such as the applied potential, the deposited charge, the electrochemical technique, and the potential sweep rate utilized for the polymer CPS deposition [46,47,50,51]. Certainly, further studies are required for the optimization of the system parameters to reach ultimate specific capacitance values for copolymer films.…”

Electrical conductivity of PEMFC under loading

“…Among other components, such as GDL, which affect the performance of fuel cells, bipolar plates are one of their main key components and constitute over 80% of the mass and almost all of the volume in a typical fuel cell stack [8]. They are used to distribute the gas (hydrogen, oxygen or air), to collect an electric current and to provide heat management [9].…”

In situ synthesis of graphene/carbon nanotube modified ordered mesoporous carbon as protective film of stainless steel bipolar plates for proton exchange membrane fuel cells

“…[4][5][6][7] More studies showed that stainless steels, such as 304, 310, 316 and 321 stainless steels, may be promising metal bipolar plate materials for practical applications in PEMFCs, which possess high mechanical strength and low electrochemical resistance. 1-3 As a major critical component in PEMFCs, the bipolar plate not only provides structural support of the membrane electrode assembly, dissipates heat of the cells, and plays some pivotal roles of distributing and separating reactant gases, but also collects and transmits electric current.…”