Numerical Prediction of System Efficiency of Solid Oxide Redox Flow Battery During Charge/Discharge Process

2013 ◽  
Vol 57 (1) ◽  
pp. 2661-2670 ◽  
Author(s):  
H. Iwai ◽  
H. Ohmori ◽  
K. Itakura ◽  
M. Saito ◽  
H. Yoshida
Keyword(s):  
Numerical Prediction ◽  
Solid Oxide ◽  
Discharge Process ◽  
System Efficiency ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Charge Discharge

Simulation of the self-discharge process in vanadium redox flow battery

2011 ◽  
Vol 196 (3) ◽  
pp. 1578-1585 ◽  
Author(s):  
Dongjiang You ◽  
Huamin Zhang ◽  
Chenxi Sun ◽  
Xiangkun Ma
Keyword(s):  
The Self ◽  
Vanadium Redox Flow Battery ◽  
Discharge Process ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Vanadium Redox

scholarly journals Real-Time Monitoring of the Thermal Effect for the Redox Flow Battery by an Infrared Thermal Imaging Technology

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6717
Author(s):  
Shu-Ling Huang ◽  
Chi-Ping Li ◽  
Chia-Chin Chang ◽  
Chen-Chen Tseng ◽  
Ming-Wei Wang ◽  
...  
Keyword(s):  
Thermal Effect ◽  
Thermal Imaging ◽  
Exchange Capacity ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Monitoring Method ◽  
Infrared Thermal Imaging ◽  
Imaging Technology ◽  
Charge Discharge

In this study, a new monitoring method was developed, titled infrared thermal imaging technology, which can effectively evaluate the thermal effect of the charge-discharge test in the vanadium/iodine redox flow battery (V/I RFB). The results show that the all-vanadium redox flow battery (all-V RFB) has a greater molar reaction Gibbs free energy change than that of the V/I RFB, representing a large thermal effect of the all-V RFB than the V/I RFB. The charge-discharge parameters, flow rate and current density, are important factors for inducing the thermal effect, because of the concentration polarization and the ohmic resistor. The new membrane (HS-SO3H) shows a high ion exchange capacity and a good ions crossover inhibitory for the V/I RFB system, and has a high coulomb efficiency that reaches 96%. The voltage efficiency was enhanced from 61% to 86% using the C-TiO2-Pd composite electrode as a cathode with the serpentine-type flow field for the V/I RFB. By adopting the high-resolution images of an infrared thermal imaging technology with the function of the temperature profile data, it is useful to evaluate the key components’ performance of the V/I RFB, and is a favorable candidate in the developing of the redox flow battery system.

scholarly journals Study on Organic Redox Flow Battery Mechanism using TEMPO and FMN-Na Solutions

REAKTOR ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 96-100
Author(s):  
Faishal Maulana Kusumah ◽  
Dita Baeti Pridiana ◽  
Peter Kusnadi ◽  
Dessy Ariyanti
Keyword(s):  
Energy Storage ◽  
Scale Up ◽  
Sem Analysis ◽  
Chloride Ions ◽  
Discharge Process ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Charge Process ◽  
Electricity Grids ◽  
Storage Technologies

Among numerous energy storage technologies, redox flow battery is one of the promising technologies that can be used to supply reliable continuation of electricity to electricity grids with a scale up to MW or MWh.  In this paper, the process mechanism and optimization of redox flow battery using organic solution such as Riboflavin-5’-phosphate sodium salt dihydrate (FMN-Na) as anolyte and 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) as catholyte were investigated. Sodium and chloride ions in salt feed were moved respectively to anolyte and catholyte by electrochemical reaction of electrolytes during the charge process and return to the feed during the discharge process. The study was carried out by given electric current with different voltage to graphite electrode range 1,5-10,5 volts and TEMPO concentration 0,02-0,08 M. The result shows that the optimum voltage is 7,5 volts with the concentration of TEMPO 0,06 M. The result also confirms the role of TEMPO solutions in the cathode. In addition to that, the FTIR and SEM analysis to the sedimentation generated during the process also revealed the change of the anolyte and catholyte after charging process.Keywords: Organic; Flow Battery; TEMPO; FMN-Na; energy storage

scholarly journals Thin Reinforced Ion-Exchange Membranes Containing Fluorine Moiety for All-Vanadium Redox Flow Battery

Membranes ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 867
Author(s):  
Ha-Neul Moon ◽  
Hyeon-Bee Song ◽  
Moon-Sung Kang
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Electrical Resistance ◽  
Vanadium Redox Flow Battery ◽  
Ion Exchange Membranes ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Exchange Membrane ◽  
Vanadium Redox ◽  
Charge Discharge

In this work, we developed pore-filled ion-exchange membranes (PFIEMs) fabricated for the application to an all-vanadium redox flow battery (VRFB) by filling a hydrocarbon-based ionomer containing a fluorine moiety into the pores of a porous polyethylene (PE) substrate having excellent physical and chemical stabilities. The prepared PFIEMs were shown to possess superior tensile strength (i.e., 136.6 MPa for anion-exchange membrane; 129.9 MPa for cation-exchange membrane) and lower electrical resistance compared with commercial membranes by employing a thin porous PE substrate as a reinforcing material. In addition, by introducing a fluorine moiety into the filling ionomer along with the use of the porous PE substrate, the oxidation stability of the PFIEMs could be greatly improved, and the permeability of vanadium ions could also be significantly reduced. As a result of the evaluation of the charge–discharge performance in the VRFB, it was revealed that the higher the fluorine content in the PFIEMs was, the higher the current efficiency was. Moreover, the voltage efficiency of the PFIEMs was shown to be higher than those of the commercial membranes due to the lower electrical resistance. Consequently, both of the pore-filled anion- and cation-exchange membranes showed superior charge–discharge performances in the VRFB compared with those of hydrocarbon-based commercial membranes.

C131 Effect of Electrolyte Flow Condition on Charge-Discharge Efficiency in Redox Flow Battery

2015 ◽  
Vol 2015.20 (0) ◽  
pp. 75-76
Author(s):  
Ryo SHIMADA ◽  
Masamichi UCHIYAMA ◽  
Kengo SUZUKI ◽  
Yutaka TABE ◽  
Takemi CHIKAHISA
Keyword(s):  
Flow Condition ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Electrolyte Flow ◽  
Discharge Efficiency ◽  
Charge Discharge
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