کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7725485 1497850 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Alkaline anion exchange membrane water electrolysis: Effects of electrolyte feed method and electrode binder content
ترجمه فارسی عنوان
الکترولیز آب غشایی تبادل قلیایی قلیایی: اثر روش الکترولیتی تغذیه و محتوای الکترودهای پیوندی
کلمات کلیدی
الکترولیز آب غشایی مبدل آنیونی قلیایی، روش تغذیه الکترولیت، مونتاژ الکترودهای غشایی، محتوای باندر،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Herein, we investigate the effects of catholyte feed method and anode binder content on the characteristics of anion exchange membrane water electrolysis (AEMWE) to construct a high-performance electrolyzer, revealing that the initial AEMWE performance is significantly improved by pre-feeding 0.5 M aqueous KOH to the cathode. The highest long-term activity during repeated voltage cycling is observed for AEMWE operation in the dry cathode mode, for which the best long-term performance among membrane electrode assemblies (MEAs) featuring polytetrafluoroethylene (PTFE) binder-impregnated (5-20 wt%) anodes is detected for a PTFE content of 20 wt%. MEAs with low PTFE content (5 and 9 wt%) demonstrate high initial performance, rapid performance decay, and significant catalyst loss from the electrode during long-term operation, whereas the MEA with 20 wt% PTFE allows stable water electrolysis for over 1600 voltage cycles. Optimization of cell operating conditions (i.e., operation in dry cathode mode at an optimum anode binder content following an initial solution feed) achieves an enhanced water splitting current density (1.07 A cm−2 at 1.8 V) and stable long-term AEMWE performance (0.01% current density reduction per voltage cycle).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 382, 1 April 2018, Pages 22-29
نویسندگان
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