Analysis of Concentration Polarization Using UV-Visible Spectrophotometry in a Vanadium Redox Flow Battery

2014 ◽  
Vol 161 (9) ◽  
pp. A1291-A1296 ◽  
Author(s):  
Hyo June Lee ◽  
Nak Heon Choi ◽  
Hansung Kim
Keyword(s):  
Concentration Polarization ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Visible Spectrophotometry ◽  
Uv Visible ◽  
Vanadium Redox

Stability of Vanadium Electrolytes in the Vanadium Redox Flow Battery

2013 ◽  
Vol 1492 ◽  
pp. 25-31
Author(s):  
Shu-Yuan Chuang ◽  
Chih-Hsing Leu ◽  
Kan-Lin Hsueh ◽  
Chun-Hsing Wu ◽  
Hsiao-Hsuan Hsu ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Negative Electrode ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Oxidation Rates ◽  
Visible Spectra ◽  
Uv Visible ◽  
The Stability ◽  
Vanadium Redox

ABSTRACTThe stability of the negative electrode electrolyte affects the efficiency and capacity of energy storage in the vanadium redox flow battery (VRFB) system. To explore the stability of vanadium electrolytes, the study prepared five types of V(II) electrolytes that were exposed to air in a fixed open area and monitored the charge state of vanadium ions over time by UV/Visible spectrophotometer. This study succeeded in preparing pure V(II) electrolytes. Five characteristics are found in the UV/Visible spectra, respectively, during the oxidation process from V(II) electrolytes to V(III) electrolytes and V(III) electrolytes to V(IV) electrolytes. The experimental results show that the oxidation rate of a solution of 1 M V(II) electrolytes to V(III) electrolytes and 1 M V(III) electrolytes to V(IV) electrolytes under an atmosphere of air is 4.79 and 0.0089 mol/h per square meter. The oxidation rates of 0.05-1 M V(II) electrolytes to V(III) electrolytes are approximately 96-538 times than that of V(III) electrolytes to V(IV) electrolytes.

Zirconium boride as a novel negative catalyst for vanadium redox flow battery

2021 ◽  
Author(s):  
Tongxue Zhang ◽  
Yingqiao Jiang ◽  
Zixuan Zhang ◽  
Jing Xue ◽  
Yuehua Li ◽  
...  
Keyword(s):  
Vanadium Redox Flow Battery ◽  
Zirconium Boride ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Vanadium Redox

scholarly journals Graphene-Based Electrodes in a Vanadium Redox Flow Battery Produced by Rapid Low-Pressure Combined Gas Plasma Treatments

2021 ◽  
Author(s):  
Sebastiano Bellani ◽  
Leyla Najafi ◽  
Mirko Prato ◽  
Reinier Oropesa-Nuñez ◽  
Beatriz Martín-García ◽  
...  
Keyword(s):  
Low Pressure ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Plasma Treatments ◽  
Gas Plasma ◽  
Vanadium Redox

Promoting vanadium redox flow battery performance by ultra-uniform ZrO2@C from metal-organic framework

2021 ◽  
Vol 415 ◽  
pp. 129014
Author(s):  
Yingqiao Jiang ◽  
Gang Cheng ◽  
Yuehua Li ◽  
Zhangxing He ◽  
Jing Zhu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Metal Organic ◽  
Vanadium Redox ◽  
Organic Framework

Long-Term Structural and Chemical Stability of Carbon Electrodes in Vanadium Redox Flow Battery

2021 ◽  
Author(s):  
Bhuvaneswari M. Sivakumar ◽  
Venkateshkumar Prabhakaran ◽  
Kaining Duanmu ◽  
Edwin Thomsen ◽  
Brian Berland ◽  
...  
Keyword(s):  
Chemical Stability ◽  
Vanadium Redox Flow Battery ◽  
Carbon Electrodes ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Vanadium Redox
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