Mitigating the capacity loss by crossover transport in vanadium redox flow battery: A chemometric efficient strategy proposed using finite element method simulation

Author(s)

Pilonetto, Luis Felipe ; Staciaki, Felipe ; Nobrega, Eryka ; Carneiro-Neto, Evaldo B. ; da Silva, Jeyse ; Pereira, Ernesto

• Document type: Journal article
• Source: CHEMICAL ENGINEERING JOURNAL; v. 474, p. 8-pg., 2023-10-15.

Abstract

Energy storage systems play a major role in the energy transition. Among them, vanadium redox flow batteries are a promising alternative to conventional batteries, which due to their design can be scaled, and it is possible to decouple power and energy density. However, the transport of electroactive species through the membrane (cross-contamination) reduces the capacity and useful life of these batteries. In this work, computational simulation was performed using the finite element method coupled to chemometric analysis to develop a mitigation strategy to decrease the vanadium redox flow batteries capacity loss by cross contamination. This study can be divided into two stages. Initially, a 23 full factorial design was performed to evaluate and determine the effect of different variables: current density, active species concentration, and volumetric flow on the loss of capacity of vanadium redox flow batteries. In the second stage, a Doehlert design was performed with current density, the concentration of active species, and the volumetric flow between electrolyte tanks as variables to obtain the optimum conditions that minimize capacity loss. The results show that the current density and the concentration of active species are the main variables that affect capacity loss in vanadium redox flow batteries. The proposed approach successfully mitigated the cross-contamination in different combinations of current density and concentration of active species providing an optimal flow between electrolyte tanks for different operating conditions. (AU)

• FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
• Grantee: Ana Flávia Nogueira
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 21/03592-2 - Finite element modeling and simulation of electrochemical devices
• Grantee: Evaldo Batista Carneiro Neto
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 19/27029-5 - Electrochemical carboxylation of organic molecules for the formation of high added value products
• Grantee: Jeyse Tawana da Silva
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 21/11630-1 - Development of new materials and methods for capacitive deionization
• Grantee: Felipe Staciaki da Luz
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 19/11095-9 - New organic redox pairs and their use at flow batteries
• Grantee: Luis Felipe Pilonetto
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 22/05254-0 - Carbon dioxide electrochemical reduction to polymeric precursors
• Grantee: Eryka Thamyris Damascena Nobrega Cavalcanti
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC