کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6602428 | 1424076 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flexible electrospun carbon nanofiber embedded with TiO2 as excellent negative electrode for 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
چکیده انگلیسی
In this paper, flexible carbon nanofiber embedded with TiO2 (CNF/TiO2) was prepared by electrospinning technique, and used as negative electrode for vanadium redox flow battery (VRFB). CNF/TiO2 composites were synthesized from solution consisting of Ti(OC4H9)4 as TiO2 precursor and polyacrilonitrile (PAN) as carbon precursor. High-purity rutile TiO2 can be dispersed evenly in CNF with the diameter of 100-200â¯nm. CNF/TiO2 composites exhibited superior electrochemical activity towards V2+/V3+ redox reaction compared with pristine CNF. The excellent energy storage performances of VRFB were achieved via using CNF/TiO2 as negative electrode, with larger capacity and efficiency. At a current density of 90â¯mAâ¯cmâ2, the discharge capacity of the cell using CNF/TiO2 electrode reached 84.0â¯mAâ¯h, 48.5â¯mAâ¯h higher than that of pristine cell. The energy efficiency of the cell based on CNF/TiO2 increased by 8.7% compared with pristine cell. The excellent electrochemical performance of CNF/TiO2 composite towards V2+/V3+ redox reaction was attributed to the synergistic effect between carbon nanofiber networks with high conductivity and rutile TiO2 with high electrocatalytic properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 281, 10 August 2018, Pages 601-610
Journal: Electrochimica Acta - Volume 281, 10 August 2018, Pages 601-610
نویسندگان
Zhangxing He, Manman Li, Yuehua Li, Jing Zhu, Yingqiao Jiang, Wei Meng, Huizhu Zhou, Ling Wang, Lei Dai,