کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7020073 1455948 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Amino acid functionalized graphene oxide based nanocomposite membrane electrolytes for direct methanol fuel cells
ترجمه فارسی عنوان
الکترولیت های غشایی نانوکامپوزیتی بر پایه اکسید گرافین کاربردی برای سلول های سوختی متانول مستقیم
کلمات کلیدی
آسپارتیک اسد، پلی اتیل اتر (کتون)، هدایت پروتون، نفوذپذیری متانول،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
Nanocomposite membranes are prepared by the dispersion of aspartic acid functionalized graphene oxide (ASPGO) in sulfonated poly(ether ether ketone) (SPEEK) for electrolytes in direct methanol fuel cells. Graphene oxide (GO) is prepared by modified Hummer's method and is further functionalized with aspartic acid. GO functionalization is confirmed from FT-IR, elemental analysis, XPS and TGA. Its morphology is confirmed by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). ASPGO is then incorporated in SPEEK matrix using solvent cast method to form composite membranes. The composite membranes are characterized in terms of their physico-chemical properties namely tensile strength, proton conductivity and methanol permeability. Addition of ASPGO improves the membrane dynamics by forming interfacial interactions with the host matrix in turn enhancing the proton transport and mitigating the methanol permeability through the membrane. These membranes are subjected as electrolytes in DMFC polarization studies and the results are compared with state of art Nafion-117 membrane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 551, 1 April 2018, Pages 1-11
نویسندگان
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