Alkaline Stability of Anion-Conductive Ionomer Coated on a Carbon Surface | Zendy

Ziyi Han | Zendy; Yuki Motoishi | Zendy; Tsuyohiko Fujigaya | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Alkaline Stability of Anion-Conductive Ionomer Coated on a Carbon Surface

Author(s) -

Ziyi Han,

Yuki Motoishi,

Tsuyohiko Fujigaya

Publication year - 2019

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b01466

Subject(s) - ionomer , electrolyte , chemical stability , catalysis , membrane , chemical engineering , coating , ion exchange , inorganic chemistry , materials science , polymer , carbon fibers , cathode , cationic polymerization , chemistry , ion , polymer chemistry , organic chemistry , electrode , nanotechnology , composite material , biochemistry , engineering , copolymer , composite number

Anion-exchange membrane fuel cells (AEMFCs) are promising technologies that allow the use of nonprecious metals as catalysts because the oxidation reduction reaction at the cathode occurs readily at the high pH of AEMFCs. However, the insufficient chemical stability of the anion-conductive materials in AEMFCs currently limits their development. We studied the chemical stability of the electrolyte in the catalyst layer of AEMFCs containing cationic dimethyl polybenzimidazole (mPBI). Although degradation was observed in an mPBI membrane under alkaline conditions, mPBI coated on a carbon support showed excellent alkaline stability. Because no glass transition temperature was observed for mPBI after coating on the support, the increase of chemical stability was probably associated with the decrease of polymer flexibility.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research