کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4988910 | 1455964 | 2017 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation and molecular dynamics simulation of acid-doped polybenzimidazole as a new membrane for air-breathing microbial fuel cells
ترجمه فارسی عنوان
بررسی تجربی و پویایی مولکولی شبیه سازی پلی بژزیمیداازول اسید به عنوان یک غشاء جدید برای سلول های سوختی میکروبی هوا تنفس
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کلمات کلیدی
سلول های سوختی میکروبی، غشای تبادل پروتون، پلی آنزیمیدازول، شبیه سازی دینامیک مولکولی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Proton-exchange membranes based on phosphoric acid-doped polybenzimidazole (PBI) were fabricated and characterized for air-breathing microbial fuel cell (MFC) applications. Molecular dynamics (MD) simulation approaches were also employed to get an in-depth understanding of structure-property relationship of MFC membranes. Addition of 500Â mol% phosphoric acid to PBI membrane enhanced its water uptake in comparison with neat PBI due to strong phosphoric acid-water interactions as revealed by MD simulations. Acid-doped PBI membranes resulted in reduced oxygen permeability (0.36 barrers) relative to Nafion (1.78 barrers). Moreover, MFC membranes based on acid-doped PBI produced higher open-circuit voltage and maximum power density of 471Â mV and 74.2Â mWÂ cmâ2, respectively, as compared to corresponding open circuit voltage of 396Â mV and maximum power density of 48.6Â mWÂ cmâ2 for Nafion membranes. Superior electrochemical properties of acid-doped PBI over Nafion were ascribed to MD predicted considerably lower diffusion coefficients of ions and oxygen molecule in acid-doped PBI than in Nafion. Owing to the attained desirable characteristics, fabricated phosphoric-acid doped PBI membranes could act as promising candidate membranes for MFC usages.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 535, 1 August 2017, Pages 221-229
Journal: Journal of Membrane Science - Volume 535, 1 August 2017, Pages 221-229
نویسندگان
Ghasem Bahlakeh, Mohammad Mahdi Hasani-Sadrabadi, Shahriar Hojjati Emami, Seyed Nasireddin Saeedi Eslami, Erfan Dashtimoghadam, Mohammad Ali Shokrgozar, Karl I. Jacob,