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Title: Development and validation of chemistry agnostic flow battery cost performance model and application to nonaqueous electrolyte systems: Chemistry agnostic flow battery cost performance model

A chemistry agnostic cost performance model is described for a nonaqueous flow battery. The model predicts flow battery performance by estimating the active reaction zone thickness at each electrode as a function of current density, state of charge, and flow rate using measured data for electrode kinetics, electrolyte conductivity, and electrode-specific surface area. Validation of the model is conducted using a 4kW stack data at various current densities and flow rates. This model is used to estimate the performance of a nonaqueous flow battery with electrode and electrolyte properties used from the literature. The optimized cost for this system is estimated for various power and energy levels using component costs provided by vendors. The model allows optimization of design parameters such as electrode thickness, area, flow path design, and operating parameters such as power density, flow rate, and operating SOC range for various application duty cycles. A parametric analysis is done to identify components and electrode/electrolyte properties with the highest impact on system cost for various application durations. A pathway to 100$kWh-1 for the storage system is identified.
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  1. Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, P.O. Box 999 Richland WA 99352 USA
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0363-907X; KC0208010
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: International Journal of Energy Research
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
Country of Publication:
United States
25 ENERGY STORAGE; 29 ENERGY PLANNING, POLICY, AND ECONOMY Non-aqueous; inter-digitated; flow; stack; electrolyte; conductivity