Kinetics of VIII and VII Sulfate Precipitation Processes in Negative Half-Cell Electrolyte of the Vanadium Redox Flow Battery

2016 ◽  
Vol 4 (1) ◽  
pp. 130-142 ◽  
Author(s):  
Asem Mousa ◽  
Maria Skyllas-Kazacos
Keyword(s):  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Half Cell ◽  
Precipitation Processes ◽  
Vanadium Redox ◽  
Kinetics Of

scholarly journals On the resistances of a slurry electrode vanadium redox flow battery

2020 ◽  
Author(s):  
Matthias Wessling
Keyword(s):  
Electrochemical Impedance ◽  
Graphite Powder ◽  
Electrode System ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Half Cell ◽  
Static Mixers ◽  
System P ◽  
Vanadium Redox

We studied the half cell performance of a slurry-based vanadium redox flow battery via the polarization and electrochemical impedance spectroscopymethods. First, the conductive static mixers are examined and lower ohmicand diffusion resistances are shown. Further analyses of the slurry electrodes for the catholyte (VO2+- VO2+) and anolyte (V3+- V2+) are presented for the graphite powder slurry containing up to 15.0 wt.% particle content. Overall, the anolyte persists as the more resistive half cell, while ohmic and diffusionrelated limitations are the dominating resistances for both electrolytes. The battery is further improved by the addition of Ketjen black nanoparticles, which results in lower cell resistances. The best results are achieved when 0.5 wt.% Ketjen black nanoparticles are dispersed with graphite powder since the addition of nanoparticles reduces ohmic, charge transfer and mass diffusion resistances by improving particle-particle dynamics. The results prove the importance of understanding resistances in a slurry electrode system.

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
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