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Composite Carbon Nanotube Microsphere Coatings for Use as Electrode Supports
Author(s) -
Fraser Alison,
Zhang Zishuai,
Merle Geraldine,
Gbureck Uwe,
Ye Siyu,
Gostick Jeff,
Barralet Jake
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201803713
Subject(s) - materials science , corrosion , coating , carbon nanotube , composite number , composite material , layer (electronics) , electrode , electrochemistry , durability , chemistry
Carbon nanotubes and titania, highly corrosion‐resistant materials, are successfully assembled into high surface area microparticles (162 m 2 g −1 ) in one step using low‐power ultrasound. The composite microparticles are electrically conductive (>0.4 S cm −1 ). The microparticles are deposited as an electrical layer (<2.5 µm) on a stainless‐steel mesh gas diffusion layer using a tribochemical coating technique. Long‐term durability testing in 0.5 m H 2 SO 4 at 80 °C confirms the corrosion resistance of the catalyst coating. This coating method may have wider applicability for other electrical and electrochemical devices that require thin corrosion‐resistant coatings.