Electro-Chemical Oxidation Kinetics of the V(IV) in the Sulfuric Acid Solution

Authors

Yong-lian QIAO, School of Material Science and Metallurgy,Northeastern University,Shenyang 110004,Liaoning,China;
Qian XU, School of Material Science and Metallurgy,Northeastern University,Shenyang 110004,Liaoning,China;
Jie ZHANG, School of Material Science and Metallurgy,Northeastern University,Shenyang 110004,Liaoning,China;
Yu-chun ZHAI, School of Material Science and Metallurgy,Northeastern University,Shenyang 110004,Liaoning,China;

Corresponding Author

Qian XU

Abstract

The electro-chemical oxidation kinetics for V(IV) in the sulfuric acid solution were investigated by cyclic voltammetry and steady state polarization curves at a graphite,platinum or conducting polymer electrode.Some kinetics parameters for the electrochemical reaction of V(IV) were calculated according to the Tafel curves.The results showed that the exchange current density and reversibility of V(V)/V(IV) redox reaction at the graphite electrode is largest among the three electrodes.There is the broadest extent of water stability and large oxidgen evolution potential when the conducting polymer was used as a working electrode in the solution of VOSO4(0.5 mol/L) and H2SO4(2 mol/L),while it is easy to evolve hydrogen at a platinum electrode in the same solution.

Keywords

vanadium redox flow battery, cyclic voltammetry, Tafel curves

DOI Link

https://doi.org/10.61558/2993-074X.1820

Publication Date

2007-08-28

Online Available Date

2007-08-28

Revised Date

2007-08-28

Received Date

2007-08-28

Recommended Citation

Yong-lian QIAO, Qian XU, Jie ZHANG, Yu-chun ZHAI. Electro-Chemical Oxidation Kinetics of the V(IV) in the Sulfuric Acid Solution[J]. Journal of Electrochemistry, 2007 , 13(3): 269-273.
DOI: 10.61558/2993-074X.1820
Available at: https://jelectrochem.xmu.edu.cn/journal/vol13/iss3/8

References

[1]Skyllas-Kazacos M.Rychcikm Robinsr.ALL-vanadiumredox battery:US,4786567[P].1988-11-22.
[2]Sjyllzx-Kazacos M,Kasherman D,HONG D R,et al.Charateristics and performance of 1kW UNSW vanadiumredox battery[J].J power Sources,1991,35(4):399-404.
[3]Joerissen L,Garche J,Fabjan C,et al.Possible use ofvanadium redox-flowbatteries for energy storage in smallgrids and stand-alone photovoltaic systems[J].J PowerSources,2004,127(1-2):98-104.
[4]Ch Fabjan J,Garche B,Harrer L,et al.The vanadiumredox-battery:an efficient storage unit for photovoltaicsystems[J].Eletrochimica Acta,2001,47:825-831.
[5]Liu Yong-gang(刘勇刚),Liu Su-qin(刘素琴),Li Xi-ao-gang(李晓钢),et al.Preparation of high conductivecomposite based on PP/SEBS[J].Engineering PlasticApplication,2005,33(1):15-18.
[6]Anson F.Electrochemistry and elechemical sensor[M].Beijing:Beijing University Press,1981.16-30.
[7]Guo He-tong(郭鹤桐),Liu Shu-lan(刘淑兰).Theo-retics electrochemistry[M].Tianjin:Yuhang Press,1984.144-148.
[8]Luo Dong-mei(罗冬梅),Kang Xiao-xue(康晓雪),XuQian(许茜).Study of the kinetics of anodic oxidationon graphite electrode for V(IV)in sulfuric acid solution[J].Electrical Technology,2006,30(3):227-230.
[9]藤嶋昭,相泽盆男,井上?.Electrical mensuration[M].Beijing:Beijing University Press,1984.64-65,154-155.