کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
63676 1419873 2016 6 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Modified carbon cloth as positive electrode with high electrochemical performance for vanadium redox flow batteries
ترجمه فارسی عنوان
پارچه کربن اصلاح شده به عنوان الکترود مثبت با عملکرد الکتروشیمیایی بالا برای باتری های جریان وانادیوم ردوکس
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کلمات کلیدی
باتری های جریان اکسیداسیون وانادیوم ؛ پارچه کربن؛ الکترود؛ سینتیک؛ عملکرد الکتروشیمیایی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی

Carbon cloth modified by hydrothermal treatment in ammonia water is developed as the positive electrode with high electrochemical performance for vanadium redox flow batteries. The SEM shows that the treatment has no obvious influence on the morphology of carbon cloth. XPS measurements indicate that the nitrogenous functional groups can be introduced on the surface of carbon cloth successfully. The electrochemical performance of V(IV)/V(V) redox couple on the prepared electrode is evaluated with cyclic voltammetry and linear sweep voltammetry measurements. The N-doped carbon cloth exhibits outstanding electrochemical activity and reversibility toward V(IV)/V(V) redox couple. The rate constant of V(IV)/V(V) redox reaction on carbon cloth can increase to 2.27 × 10−4 cm/s from 1.47 × 10−4 cm/s after nitrogen doping. The cell using N-doped carbon cloth as positive electrode has larger discharge capacity and higher energy efficiency compared with the cell using pristine carbon cloth. The average energy efficiency of the cell using N-doped carbon cloth for 50 cycles at 30 mA/cm2 is 87.8%, 4.3% larger than that of the cell using pristine carbon cloth. It indicates that the N-doped carbon cloth has a promise application prospect in vanadium redox flow batteries.

N-doped carbon cloth was developed as superior electrode for VRFB. The electrochemical activity and reversibility of V(V)/V(IV) redox couple on carbon cloth are significantly enhanced by N doping.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Energy Chemistry - Volume 25, Issue 4, July 2016, Pages 720–725
نویسندگان
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