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Title: The Relationship between Shunt Currents and Edge Corrosion in Flow Batteries

Abstract

Shunt currents occur in electrochemical reactors like flow batteries, electrolyzers, and fuel cells where many bipolar cells that are connected in series electrically contact a mobile electrolyte through one or more common fluid distribution manifolds. Shunt currents reduce energy efficiency, and can cause unwanted side reactions including corrosion and gas generation. Equivalent-circuit models have been widely used to examine shunt currents in multi-cell electrochemical reactors. However, a detailed investigation of the interesting electrochemical processes occurring at the edges of the active areas has not been presented. In this work, the generation of shunt currents and their tendency to drive corrosion at the edges of positive electrodes in the most positive cells in a reactor stack are investigated with a comprehensive numerical model. An analytical model based on the penetration of current into a semi-infinite electrode, that can be used in conjunction with traditional equivalent-circuit models to assess the tendency for shunt currents to drive corrosion, is developed and compared to the numerical model. The models provided here can be used to set requirements on maximum allowable port currents in order to achieve a particular durability goal.

Authors:
 [1];  [2]; ORCiD logo [2];  [3]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Joint Center for Energy Storage Research (JCESR); United Technologies Research Center, East Hartford, CT (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. United Technologies Research Center, East Hartford, CT (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Office (EE-3F)
OSTI Identifier:
1506267
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 164; Journal Issue: 11; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Corrosion; Flow battery; Shunt current

Citation Formats

Darling, Robert M., Shiau, Huai-Suen, Weber, Adam Z., and Perry, Mike L. The Relationship between Shunt Currents and Edge Corrosion in Flow Batteries. United States: N. p., 2017. Web. doi:10.1149/2.0081711jes.
Darling, Robert M., Shiau, Huai-Suen, Weber, Adam Z., & Perry, Mike L. The Relationship between Shunt Currents and Edge Corrosion in Flow Batteries. United States. doi:10.1149/2.0081711jes.
Darling, Robert M., Shiau, Huai-Suen, Weber, Adam Z., and Perry, Mike L. Tue . "The Relationship between Shunt Currents and Edge Corrosion in Flow Batteries". United States. doi:10.1149/2.0081711jes. https://www.osti.gov/servlets/purl/1506267.
@article{osti_1506267,
title = {The Relationship between Shunt Currents and Edge Corrosion in Flow Batteries},
author = {Darling, Robert M. and Shiau, Huai-Suen and Weber, Adam Z. and Perry, Mike L.},
abstractNote = {Shunt currents occur in electrochemical reactors like flow batteries, electrolyzers, and fuel cells where many bipolar cells that are connected in series electrically contact a mobile electrolyte through one or more common fluid distribution manifolds. Shunt currents reduce energy efficiency, and can cause unwanted side reactions including corrosion and gas generation. Equivalent-circuit models have been widely used to examine shunt currents in multi-cell electrochemical reactors. However, a detailed investigation of the interesting electrochemical processes occurring at the edges of the active areas has not been presented. In this work, the generation of shunt currents and their tendency to drive corrosion at the edges of positive electrodes in the most positive cells in a reactor stack are investigated with a comprehensive numerical model. An analytical model based on the penetration of current into a semi-infinite electrode, that can be used in conjunction with traditional equivalent-circuit models to assess the tendency for shunt currents to drive corrosion, is developed and compared to the numerical model. The models provided here can be used to set requirements on maximum allowable port currents in order to achieve a particular durability goal.},
doi = {10.1149/2.0081711jes},
journal = {Journal of the Electrochemical Society},
issn = {0013-4651},
number = 11,
volume = 164,
place = {United States},
year = {2017},
month = {4}
}

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Cited by: 10 works
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Works referenced in this record:

Shunt current loss of the vanadium redox flow battery
journal, December 2011


Investigation of the V(V)/V(IV) system for use in the positive half-cell of a redox battery
journal, October 1985


Secondary Current Distributions Using TOPAZ2D and Linear Kinetics
journal, January 1988

  • Dimpault-Darcy, E. C.
  • Journal of The Electrochemical Society, Vol. 135, Issue 3
  • DOI: 10.1149/1.2095692

Analysis of shunt currents and associated corrosion of bipolar plates in PEM fuel cells
journal, January 2015


Cost and performance model for redox flow batteries
journal, February 2014


A study of the V(II)/V(III) redox couple for redox flow cell applications
journal, June 1985


Electrical leakage currents in bipolar cell stacks
journal, March 1980

  • Kuhn, A. T.; Booth, J. S.
  • Journal of Applied Electrochemistry, Vol. 10, Issue 2
  • DOI: 10.1007/BF00726091

Liquid Mass Transfer at Very Low Reynolds Numbers in Packed Beds
journal, February 1966

  • Wilson, E. J.; Geankoplis, C. J.
  • Industrial & Engineering Chemistry Fundamentals, Vol. 5, Issue 1
  • DOI: 10.1021/i160017a002

Investigation on V(IV)/V(V) species in a vanadium redox flow battery
journal, August 2004


Investigation of the effect of shunt current on battery efficiency and stack temperature in vanadium redox flow battery
journal, November 2013


The Influence of Electrode and Channel Configurations on Flow Battery Performance
journal, January 2014

  • Darling, Robert M.; Perry, Mike L.
  • Journal of The Electrochemical Society, Vol. 161, Issue 9
  • DOI: 10.1149/2.0941409jes

Analysis of Electrolyte Shunt Currents in Fuel Cell Power Plants
journal, January 1978

  • Katz, Murray
  • Journal of The Electrochemical Society, Vol. 125, Issue 4
  • DOI: 10.1149/1.2131488

Numerical and experimental studies of stack shunt current for vanadium redox flow battery
journal, August 2015


Shunt current calculation of fuel cell stack using Simulink®
journal, August 2008


A comprehensive equivalent circuit model of all-vanadium redox flow battery for power system analysis
journal, September 2015


State of charge monitoring methods for vanadium redox flow battery control
journal, October 2011


Potential distribution and electrode stability in a bipolar electrolysis cell
journal, March 1990

  • Divisek, J.; Jung, R.; Britz, D.
  • Journal of Applied Electrochemistry, Vol. 20, Issue 2
  • DOI: 10.1007/BF01033594

A multi-stack simulation of shunt currents in vanadium redox flow batteries
journal, September 2014


A Technique for Calculating Shunt Leakage and Cell Currents in Bipolar Stacks Having Divided or Undivided Cells
journal, January 1983

  • Kaminski, E. A.
  • Journal of The Electrochemical Society, Vol. 130, Issue 5
  • DOI: 10.1149/1.2119891

Open circuit voltage of vanadium redox flow batteries: Discrepancy between models and experiments
journal, April 2011


Development and characteristics of a membraneless microfluidic fuel cell array
journal, July 2014


Comparative analysis for various redox flow batteries chemistries using a cost performance model
journal, October 2015


Predicting Shunt Currents in Stacks of Bipolar Plate Cells
journal, January 1986

  • White, R. E.
  • Journal of The Electrochemical Society, Vol. 133, Issue 3
  • DOI: 10.1149/1.2108606