کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7995086 | 1516162 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Acetylene black coated V2O5 nanocomposite with stable cyclability for lithium-ion batteries cathode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Acetylene black coated V2O5 nanocomposite with stable cyclability for lithium-ion batteries cathode Acetylene black coated V2O5 nanocomposite with stable cyclability for lithium-ion batteries cathode](/preview/png/7995086.png)
چکیده انگلیسی
Owing to the excellent power density, energy storage capability, and rechargeable nature, lithium-ion batteries are being used in laptops, vehicles, home electronics and large-scale industrial instruments, and thus governing the market of portable electronics. Here, we present the electrochemical performance of the V2O5/acetylene black (V2O5/C) nanocomposite, used as a cathode material in lithium-ion batteries, prepared by a facile chemical synthesis route. The nanocomposite shows an outstanding electrochemical performance with a discharge capacity of 361Â mAh gâ1 during 1st cycle and retains a capacity of 254Â mAh gâ1 after 100 cycles, at a step rate of 0.1Â C. Further, electrochemical impedance spectroscopy was employed to examine the reaction kinetics before and after cycling and the Li+-diffusion coefficient was calculated to be 1.67Â ÃÂ 10â12 and 6.13Â ÃÂ 10â15Â cm2Â sâ1, respectively. The enhanced electrochemical performance of V2O5/C nanocomposite can be ascribed to the synergistic effect of nanosized V2O5 and conductive acetylene black, which could shorten diffusion pathway, play a role of efficient charge carrier and make the electrode have better electronic/ionic conductivity and lower resistance. Hence, V2O5/C nanocomposite could be utilised as promising cathode material for lithium-ion batteries because of its stable electrochemical performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 732, 25 January 2018, Pages 518-523
Journal: Journal of Alloys and Compounds - Volume 732, 25 January 2018, Pages 518-523
نویسندگان
Muhammad Haris, Shahid Atiq, Syed Mustansar Abbas, Asif Mahmood, Shahid Mahmood Ramay, Shahzad Naseem,