Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis
نویسندگان
چکیده
Cross-linked quaternised Poly(2,6-dimethyl-1,4-Phenylene Oxide) (QPPO)-based membranes were prepared via Friedel-Crafts reactions using SnCl4 catalyst, 1,3,5-trioxane and chlorotrimethylsilane as environmentally-friendly chloromethylating reagents. New equations to calculate the degree of chloromethylation (DC) cross-linking (CLD) proposed. Ionic conductivity 133 mS cm?1 at 80 °C was obtained, one highest reported for QPPO based membranes. We have compared chloromethylated polystyrene-b-poly(ethylene/butylene)-b-polystyrene (SEBS) ionomer report on importance ionomer-membrane interaction well trade-off between swelling ratio performance mechanical stability AEM water electrolyser. Exsitu testing after 500 h in 1 M KOH showed retained up 94% their original IEC. employed both ionomers electrolyser tests. exhibited area specific resistance 104 m? cm?2 current density 814 mA 2.0 V 0.1 NaOH solution 40 °C.
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ژورنال
عنوان ژورنال: International Journal of Hydrogen Energy
سال: 2021
ISSN: ['0360-3199', '1879-3487']
DOI: https://doi.org/10.1016/j.ijhydene.2021.09.014