Flexible electrospun carbon nanofiber embedded with TiO2 as excellent negative electrode for vanadium redox flow battery
Flexible electrospun carbon nanofiber embedded with TiO2 as excellent negative electrode for vanadium redox flow battery
复制标题
嵌入TiO2的柔性电纺碳纳米纤维作为钒氧化还原液流电池的优异负极
DOI：
10.1016/j.electacta.2018.06.011
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发表时间：
2018-08-10
影响因子：
6.6
通讯作者：
Dai, Lei
中科院分区：
文献类型：
--
作者：
He, Zhangxing;Li, Manman;Dai, Lei
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 -200 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 90 mA cm(-2), the discharge capacity of the cell using CNF/TiO2 electrode reached 84.0 mA h, 48.5 mA 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. (c) 2018 Elsevier Ltd. All rights reserved.
