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

Energies

Chen-Chen Tseng¹  Chi-Ping Li¹  Chia-Chin Chang¹  Ming-Wei Wang¹  Mei-Ling Chen²  Shu-Ling Huang³ 

[1] Department of Chemical Engineering, National United University, Miaoli 36063, Taiwan;Department of Electrical Engineering, National United University, Miaoli 36063, Taiwan;Program in Materials and Chemical Engineering, National United University, Miaoli 36063, Taiwan;

关键词: thermal effect;    infrared thermal imaging;    redox flow battery;    C-TiO₂-Pd composite electrode;    separation membrane;   

DOI  :  10.3390/en13246717

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown