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Ion transport properties of porous polybenzimidazole membranes for vanadium redox flow batteries obtained via supercritical drying of swollen polymer films
Author(s) -
Sizov Victor E.,
Kondratenko Mikhail S.,
Gallyamov Marat O.
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46262
Subject(s) - vanadium , membrane , supercritical fluid , chemical engineering , materials science , nafion , redox , solvent , benzimidazole , polymer , polymer chemistry , inorganic chemistry , chemistry , organic chemistry , composite material , electrode , electrochemistry , biochemistry , engineering
A novel method of membrane preparation for use in vanadium redox flow batteries by preswelling of poly(2,5‐benzimidazole) films in organic solvent followed by supercritical CO 2 assisted solvent removal is proposed. Influence of the organic solvent type on the morphology, proton, and vanadyl ion transport properties is studied. The performance of the obtained membranes inside single cells of vanadium redox flow batteries is compared to pristine dense poly(2,5‐benzimidazole) and Nafion 115 membranes. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46262.