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

Shu-Ling Huang, Chi-Ping Li, Chia-Chin Chang, Chen-Chen Tseng, Ming-Wei Wang and Mei-Ling Chen
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Shu-Ling Huang: Program in Materials and Chemical Engineering, National United University, Miaoli 36063, Taiwan
Chi-Ping Li: Department of Chemical Engineering, National United University, Miaoli 36063, Taiwan
Chia-Chin Chang: Department of Chemical Engineering, National United University, Miaoli 36063, Taiwan
Chen-Chen Tseng: Department of Chemical Engineering, National United University, Miaoli 36063, Taiwan
Ming-Wei Wang: Department of Chemical Engineering, National United University, Miaoli 36063, Taiwan
Mei-Ling Chen: Department of Electrical Engineering, National United University, Miaoli 36063, Taiwan

Energies, 2020, vol. 13, issue 24, 1-19

Abstract: 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-SO 3 H) 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-TiO 2 -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.

Keywords: thermal effect; infrared thermal imaging; redox flow battery; C-TiO 2 -Pd composite electrode; separation membrane (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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