A 3D modelling study on all vanadium redox flow battery at various operating temperatures

He, Qijiao1,2; Li, Zheng1,2; Zhao, Dongqi1,2; Yu, Jie1,2; Tan, Peng3; Guo, Meiting1,2; Liao, Tianjun4; Zhao, Tianshou5; Ni, Meng1,2

2023-11-01

10.1016/j.energy.2023.128934

ENERGY   影响因子和分区

0360-5442

1873-6785

To understand whether the optimization of the operating/electrode structural parameters are temperature dependent, a 3D numerical model is developed and validated to gain insight into the impact of practical operating temperature (273.15 K-323.15 K) on vanadium redox flow battery (VRFB) performance, in which the property parameters are from published experimental data. The operating temperature is found significantly influence the optimal design of VRFBs. Increasing the inlet flow rate and state of charge (SOC), decreasing the electrode porosity and fibre diameter can all improve the battery performance with interdigitated flow channels, and the improvement increases with increasing temperature. In contrast, decreasing the fibre diameter or porosity increases the flow resistance and costs higher pump consumption, which is more pronounced at a lower temperature due to higher electrolyte viscosity. The effect of electrode thickness is also different at various temperatures. The gradient porosity electrode is applied in VRFB with interdigitated flow channels. The electrochemical performance of VRFB with gradient electrode (porosity increases from 0.8 at channel side to 0.93 at membrane side) performs similarly with the VRFB with 0.8 porosity electrode, while the pressure drop is reduced by 40% at all temperature. This model provides a deep understanding of effects of a wide range of working temperature on the optimization of operating/electrode parameters and on the VRFBs' performance.

Vanadium redox flow battery Numerical modelling Temperature effects Parametric study Structural optimization

SCI ; EI

英语

通讯

Research Grants Council, University Grants Committee, Hong Kong SAR[T23-601/17-R]

Thermodynamics ; Energy & Fuels

Thermodynamics ; Energy & Fuels

WOS:001071611000001

PERGAMON-ELSEVIER SCIENCE LTD

20233914813288

3D modeling ; Battery management systems ; Charging (batteries) ; Electrochemical electrodes ; Electrolytes ; Flow batteries ; Numerical models ; Porosity ; Temperature

Thermodynamics:641.1 ; Electric Batteries and Fuel Cells:702 ; Secondary Batteries:702.1.2 ; Data Processing and Image Processing:723.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Mathematics:921 ; Optimization Techniques:921.5 ; Physical Properties of Gases, Liquids and Solids:931.2

ENGINEERING

Web of Science

1.Hong Kong Polytech Univ, Res Inst Sustainable Urban Dev RISUD, Dept Bldg & Real Estate, Kowloon, Hong Kong, Peoples R China
2.Hong Kong Polytech Univ, Res Inst Smart Energy RISE, Hong Kong, Peoples R China
3.Univ Sci & Technol China USTC, Dept Thermal Sci & Energy Engn, Hefei 230026, Anhui, Peoples R China
4.Chongqing Univ Technol, Dept Phys & Energy, Chongqing Key Lab Green Energy Mat Technol & Syst, Chongqing 400054, Peoples R China
5.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

He, Qijiao,Li, Zheng,Zhao, Dongqi,et al. A 3D modelling study on all vanadium redox flow battery at various operating temperatures[J]. ENERGY,2023,282.

He, Qijiao.,Li, Zheng.,Zhao, Dongqi.,Yu, Jie.,Tan, Peng.,...&Ni, Meng.(2023).A 3D modelling study on all vanadium redox flow battery at various operating temperatures.ENERGY,282.

He, Qijiao,et al."A 3D modelling study on all vanadium redox flow battery at various operating temperatures".ENERGY 282(2023).