کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4767699 | 1424143 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature influence on the reaction kinetics of V(IV)/V(V) in methanesulfonic acid for all-vanadium redox flow battery
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Temperature influence on the reaction kinetics of V(IV)/V(V) in methanesulfonic acid for all-vanadium redox flow battery Temperature influence on the reaction kinetics of V(IV)/V(V) in methanesulfonic acid for all-vanadium redox flow battery](/preview/png/4767699.png)
چکیده انگلیسی
In this study, methanesulfonic acid has been investigated as the supporting electrolyte for vanadium solutions due to the improvement of mass transfer rate and reaction kinetics. Here, we applied different temperatures (0-55 °C) for electrochemical experiments of 0.1 M vanadium ions in 1.0 M MSA electrolyte on gold, platinum and glassy carbon electrodes separately to study the temperature-related kinetics. Considering that electron transfer is the control path for the whole reduction potential window, the rotating disc electrode approach was utilized for the oxidation of V(IV) ions, while the reduction of V(V) ions was studied by cyclic voltammetry. The influence of temperature on charge-transfer resistance and mass transport for both V(IV) and V(V) solutions was studied by electrochemical impedance spectroscopy on glassy carbon electrode. The results showed that the diffusion coefficients in both redox reactions on all electrodes increased with temperature, and most were in the order of 10â6 cm2 sâ1. The positive influence of temperature was also observed on the standard rate constants for all conditions in this study, most significantly on the glassy carbon electrode. Comparison between glassy carbon electrode and metal electrodes indicates a promising potential of carbon-based material as electrode for redox flow battery.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 214, 1 October 2016, Pages 11-18
Journal: Electrochimica Acta - Volume 214, 1 October 2016, Pages 11-18
نویسندگان
Qiuhong Wang, Walid A. Daoud,