In situ non-catalyst synthesis of multiwall carbon nanotubes and nanofibers on commercial stainless steel cylinder

Taha, Kamal K.; Elamin, Mohamed R.; Abdulkhair, Babiker Y.

doi:10.1007/s10934-018-0638-8

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…In addition, some studies on nanostructures shows that surface morphologies and nanostructures, consisting of nanoscale chips have a significant influence on the precision and performance of devices in semiconductor, optoelectronics and microelectronics industries (Zhang et al 2013(Zhang et al , 2012a(Zhang et al , 2012b(Zhang et al , 2020Han et al 2020;Cui et al 2019;Meng et al 2020;Liao et al 2020). However, although the direct formation of nanostructured carbon coatings on stainless steel using CVD has been reported, their porous nature cannot make best use of corrosion protection for bipolar plate applications (Baddour et al 2009;Taha et al 2019;Masarapu et al 2007;Chun et al 2005). Therefore, it is of significance to investigate the corrosion resistance of carbon coatings on stainless steel as a function of their microstructure prepared under various CVD conditions.…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Significant enhancement of corrosion resistance of stainless steel with nanostructured carbon coatings by substrate-catalytic CVD

et al. 2020

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The bipolar plate is the major component of proton-exchange membrane fuel cells and also a critical contributor to the fuel cell performance. Metallic bipolar plate (MBP) has high impact resistance but its poor chemical stability limits the service lifetime and stack stability. One of the feasible methods to enhance the corrosion resistance of MBPs is the formation of conductive protective coatings on the MBP surface. In this work, nanostructured carbon coatings were deposited on stainless steel by chemical vapor deposition using the substrate itself as catalysts. Under the optimized conditions, the corrosion potential of carbon coatings with dense spherical structure on stainless steel (2.1 V RHE ) is much higher than that of uncoated one (1.2 V RHE ), and even greater than that of commercial graphite bipolar plates (1.7 V RHE ), showing 75% and 23.5% improvement in corrosion resistance, respectively. Moreover, the corrosion current density of stainless steel with dense sphere-assembled coatings decreases to 0.2 mA/cm 2 , which is two orders of magnitude lower than that of graphite bipolar plates (27.4 mA/ cm 2 ) at the same applied potential (2.2 V RHE ). The coated stainless steel with excellent anticorrosion properties has potential applications for MBPs in proton-exchange membrane fuel cells, electrochemical treatment of waste water, and current collectors in lithium-ion batteries.

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