کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4907941 1426578 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel sulfonated poly(ether ether ketone)/oxidized g-C3N4 composite membrane for vanadium redox flow battery applications
ترجمه فارسی عنوان
غشاء کامپوزیت پلی کریستال (اتر اتر کتون) / اکسید شده برای برنامه های کاربردی باتری جریان ودیادو
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
A novel oxidized g-C3N4 (OCN)-modified Sulfonated poly(ether ether ketone) (SPEEK) composite membrane were fabricated via a solution-casting method. The physicochemical properties of composite membranes with different oxidized-C3N4 content were characterized, including water uptake, swelling ratio, ion exchange capacity, proton conductivity, vanadium ion permeability and ion selectivity. It was found that when the content of OCN incorporated into SPEEK matrix was 1%, this composite membrane showed a low vanadium ion permeability(9.09 × 10−7 cm2 min− 1) and high ion selectivity(6.60 × 104 S min cm− 3). The vanadium redox flow battery (VRB) assembled with this membrane at 60 mA cm− 2 exhibited a higher coulombic efficiency (98%) than Nafion 117 membrane (95%). Moreover, in cycling tests VRB assembled with this composite membrane showed a more stable cycle performance compared with that of Nafion 117 membrane. Thus, the OCN-modified SPEEK composite membrane has a potential application for VRB system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 797, 15 July 2017, Pages 107-112
نویسندگان
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