کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766938 | 1424109 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anion-selective materials with 1,4-diazabicyclo[2.2.2]octane functional groups for advanced alkaline water electrolysis
ترجمه فارسی عنوان
مواد انتخابی آنیون با گروههای فعال 1،4-دیازابیسیکو [2.2.2] اکتان برای الکترولیز آب قلیایی پیشرفته
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In this study a novel alkaline polymer electrolyte membrane is presented, based on polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (PSEBS) functionalized by the 1,4-diazabicyclo[2.2.2]octane (DABCO) to be used as an electrode compartment separator as well as a catalytic layer binder in the alkaline water electrolysis process with the aim to reduce the concentration of KOH in the liquid electrolyte and to allow the construction of an efficient zero gap-type cell. This material was selected due to the promising properties of both individual components resulting from their molecular structure. The prepared membrane was thoroughly characterized with regard to its stability in an alkaline environment. The prepared membrane showed an ion-exchange capacity value of 0.76 mmol gâ1dry membrane and ionic conductivity of 7.5 S mâ1 at 30 °C. Excellent membrane durability was confirmed for a KOH concentration range up to 10 wt.% and temperature up to 50 °C. Subsequently, the polymer electrolyte was tested in a laboratory alkaline water electrolyser using 10 wt.% KOH as a circulating medium showing promising current density of 150 mA cmâ2 at 40 °C. In a 150-hour experiment the PSEBS functionalized by DABCO manifested very good stability and high potential for optimization for this process as it showed no signs of chemical degradation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 248, 10 September 2017, Pages 547-555
Journal: Electrochimica Acta - Volume 248, 10 September 2017, Pages 547-555
نویسندگان
JaromÃr Hnát, Michaela Plevová, Jan Žitka, Martin Paidar, Karel Bouzek,