Year: 2024
Type: article
Abstract: Stainless steel (SS) is highly susceptible to corrosion in acidic environments, which significantly limits its applicability in such conditions. In this paper, a poly(3,4-ethylenedioxythiophene)-polystyrene sulfonic acid (PEDOT-PSS)/waterborne acrylic resin (AR) composite coating was designed and prepared for enhancing the corrosion resistance of 304SS. Corrosion current density (jcorr) of the PEDOT-PSS/AR-coated 304SS at the simulated PEMFCs’ operating temperature (80 °C) is only 0.86 μA·cm−2 which achieves the 2025 DOE goal (jcorr < 1 μA·cm−2). The improved corrosion resistance would be attributed to both the anode protection and barrier effect provided by the PEDOT-PSS/AR coating. Moreover, the 304SS coated by the PEDOT-PSS/AR obtains a lower interfacial contact resistance (ICR) of 37.01 mΩ·cm2 at 1.4 MPa than that coated by the pure AR coating with the ICR of 167.95 mΩ·cm2. This eco-friendly, conducting, and anti-corrosive PEDOT-PSS/AR coating offers a new insight into high-performance applications for SS.
Source: Coatings
Authors: Congcong Li, Haifeng Bian, Yongkang Wang, Xiao Liu, Linyan Su, Wenhao Bu, Yunfei Wang, Beibei Yang, Duan Bin, Peng Zhu, Hongbin Lu
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,955
OpenAlex ID: W4405833676