The electrochemical catalytic activity of single-walled carbon nanotubes towards VO2+/VO2+ and V3+/V2+ redox pairs for an all vanadium redox flow battery

2012 ◽  
Vol 79 ◽  
pp. 102-108 ◽  
Author(s):  
Wenyue Li ◽  
Jianguo Liu ◽  
Chuanwei Yan
2016 ◽  
Vol 6 (24) ◽  
pp. 8418-8427 ◽  
Author(s):  
M. Buaki-Sogó ◽  
A. Vivian ◽  
L. A. Bivona ◽  
H. García ◽  
M. Gruttadauria ◽  
...  

Single walled carbon nanotubes were functionalized with imidazolium based salts and successfully used as catalysts for the conversion of CO2. The novel materials displayed excellent catalytic activity.


2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Qiang Li ◽  
Anyu Bai ◽  
Zeqiang Qu ◽  
Tianyu Zhang ◽  
Jie Li ◽  
...  

A comprehensive study on the hydroxyl multiwalled carbon nanotubes (hydroxyl MWCNTs) as catalysts in a positive reaction was performed to improve the efficiency of the vanadium redox flow battery (VRFB). The physicochemical properties of the hydroxyl MWCNT-modified electrode were characterized by using a scanning electron microscope (SEM), conductivity measurement, Brunner–Emmet–Teller (BET) measurement, X-ray photoelectron spectroscopy (XPS) analysis, cyclic voltammetry (CV) tests, electrochemical impedance spectroscopy (EIS) analysis, and charge-discharge tests. The prepared composite electrode possesses a huge amount of oxygen-containing groups, high-specific surface area, high electrical conductivity, and high catalytic activity towards the VO2+/VO2+ reaction based on physicochemical characterization. The hydroxyl MWCNT-modified graphite felt (hydroxyl MWCNTs/GF) shows the best cell performance with the energy efficiency of 79.74% and remains in high stability after 50 cycles. The improved cell performance is probably ascribed to the increase in active sites, fast charge transfer, and mass transfer rate of the introduced hydroxyl MWCNTs.


RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107294-107294 ◽  
Author(s):  
Yu-Chung Chang ◽  
Yu-Chen Shih ◽  
Jian-Yu Chen ◽  
Guan-Yi Lin ◽  
Ning-Yih Hsu ◽  
...  

Correction for ‘High efficiency of bamboo-like carbon nanotubes on functionalized graphite felt as electrode in vanadium redox flow battery’ by Yu-Chung Chang et al., RSC Adv., 2016, 6, 102068–102075.


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