کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6600955 1423970 2018 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of graphene nanoplatelet edges on the iodide/triiodide redox reaction
ترجمه فارسی عنوان
اثر لبه های نانولوله های گرافن بر واکنش های بازدارنده یوید / تری یوید
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Carbon electrodes have been extensively studied for the development of Pt-free dye-sensitized solar cells. In this study, the influence of graphene nanoplatelet edges on the activity of an electrolyte reaction was investigated. The reaction activities of graphene nanoplatelet aggregates (GNAs) and graphene nanoplatelets (GNs), which have different surface areas, were evaluated by cyclic voltammetry and electrochemical impedance spectroscopy (EIS). The charge transfer resistances (RCT) of the GNAs and GNs were determined from EIS to be 12 Ω and 1.4 × 103 Ω, respectively. The coefficient components (AW) of the diffusion impedance, known as the Warburg impedance, of GNAs and GNs were 63 Ω Hz0.5 and 1.2 × 102 Ω Hz0.5, respectively. From these results, it was found that the edge plane area of the graphene aggregates affects both the reaction resistance and electrolyte diffusion in the carbon film.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 87, February 2018, Pages 49-52
نویسندگان
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