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Estimation of Transport and Kinetic Parameters of Vanadium Redox Batteries Using Static Cells

Journal Article · · ECS Transactions (Online)
 [1];  [2];  [2];  [3];  [2];  [4]
  1. Univ. of Washington, Seattle, WA (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Indian Institute of Technology, Telangana (India)
  4. Univ. of Washington, Seattle, WA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
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Mathematical models of Redox Flow Batteries (RFBs) can be used to analyze cell performance, optimize battery operation, and control the energy storage system efficiently. Among many other models, physics-based electrochemical models are capable of predicting internal states of the battery, such as temperature, state-of-charge, and state-of-health. In the models, estimating parameters is an important step that can study, analyze, and validate the models using experimental data. A common practice is to determine these parameters either through conducting experiments or based on the information available in the literature. However, it is not easy to investigate all proper parameters for the models through this way, and there are occasions when important information, such as diffusion coefficients and rate constants of ions, has not been studied. Also, the parameters needed for modeling charge-discharge are not always available. In this paper, an efficient way to estimate parameters of physics-based redox battery models will be proposed. Furthermore, this paper also demonstrates that the proposed approach can study and analyze aspects of capacity loss/fade, kinetics, and transport phenomena of the RFB system.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Electricity Delivery and Energy Reliability (OE), Power Systems Engineering Research and Development (R&D) (OE-10)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1454679
Report Number(s):
SAND--2018-2539J; 661288
Journal Information:
ECS Transactions (Online), Journal Name: ECS Transactions (Online) Journal Issue: 5 Vol. 85; ISSN 1938-6737
Publisher:
Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (19)

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Table I(p. 17)table Table I
Table II(p. 18)table Table II
Table III(p. 19)table Table III
Table IV(p. 20)table Table IV
Table V(p. 21)table Table V
Table VI(p. 22)table Table VI
Table VII(p. 23)table Table VII
Figure 1S(p. 24)figure Figure 1S
Figure 2S(p. 25)figure Figure 2S
Figure 3S(p. 27)figure Figure 3S
Table S1(p. 28)table Table S1
Table S2(p. 29)table Table S2

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Related Subjects

25 ENERGY STORAGE