Polysulfide Speciation in the Bulk Electrolyte of a Lithium Sulfur Battery

McBrayer, Josefine D.; Beechem, Thomas E.; Perdue, Brian R.; Apblett, Christopher A.; Garzon, Fernando H.

doi:10.1149/2.0441805jes

Title: Polysulfide Speciation in the Bulk Electrolyte of a Lithium Sulfur Battery

Abstract

In situ Raman microscopy was used to study polysulfide speciation in the bulk ether electrolyte during the discharge and charge of a Li-S electrochemical cell to assess the complex interplay between chemical and electrochemical reactions in solution. During discharge, long chain polysulfides and the S₃^- radical appear in the electrolyte at 2.4 V indicating a rapid equilibrium of the dissociation reaction to form S₃^-. When charging, however, an increase in the concentration of all polysulfide species was observed. This highlights the importance of the electrolyte to sulfur ratio and suggests a loss in the useful sulfur inventory from the cathode to the electrolyte.

Authors:

^[1]; Beechem, Thomas E. ^[2]; Perdue, Brian R. ^[2]; Apblett, Christopher A. ^[2]; Garzon, Fernando H. ^[1]

Univ. of New Mexico, Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Fri Mar 23 00:00:00 EDT 2018

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1432474

Report Number(s):: SAND2018-2836J
Journal ID: ISSN 0013-4651; 661507

Grant/Contract Number:: NA0003525

Resource Type:: Accepted Manuscript

Journal Name:: Journal of the Electrochemical Society

Additional Journal Information:: Journal Volume: 165; Journal Issue: 5; Journal ID: ISSN 0013-4651

Publisher:: The Electrochemical Society

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; lithium sulfur battery; polysulfide speciation; Raman

Citation Formats


                    McBrayer, Josefine D., Beechem, Thomas E., Perdue, Brian R., Apblett, Christopher A., and Garzon, Fernando H. Polysulfide Speciation in the Bulk Electrolyte of a Lithium Sulfur Battery.  United States: N. p., 2018. 
Web.  doi:10.1149/2.0441805jes.

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                    McBrayer, Josefine D., Beechem, Thomas E., Perdue, Brian R., Apblett, Christopher A., & Garzon, Fernando H. Polysulfide Speciation in the Bulk Electrolyte of a Lithium Sulfur Battery.  United States.  https://doi.org/10.1149/2.0441805jes

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                    McBrayer, Josefine D., Beechem, Thomas E., Perdue, Brian R., Apblett, Christopher A., and Garzon, Fernando H. Fri .  
"Polysulfide Speciation in the Bulk Electrolyte of a Lithium Sulfur Battery".  United States.  https://doi.org/10.1149/2.0441805jes.  https://www.osti.gov/servlets/purl/1432474.

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@article{osti_1432474,

  title        = {Polysulfide Speciation in the Bulk Electrolyte of a Lithium Sulfur Battery},

  author       = {McBrayer, Josefine D. and Beechem, Thomas E. and Perdue, Brian R. and Apblett, Christopher A. and Garzon, Fernando H.},

  abstractNote = {In situ Raman microscopy was used to study polysulfide speciation in the bulk ether electrolyte during the discharge and charge of a Li-S electrochemical cell to assess the complex interplay between chemical and electrochemical reactions in solution. During discharge, long chain polysulfides and the S3- radical appear in the electrolyte at 2.4 V indicating a rapid equilibrium of the dissociation reaction to form S3-. When charging, however, an increase in the concentration of all polysulfide species was observed. This highlights the importance of the electrolyte to sulfur ratio and suggests a loss in the useful sulfur inventory from the cathode to the electrolyte.},

  doi          = {10.1149/2.0441805jes},

  journal      = {Journal of the Electrochemical Society},

  number       = 5,

  volume       = 165,

  place        = {United States},

  year         = {Fri Mar 23 00:00:00 EDT 2018},

  month        = {Fri Mar 23 00:00:00 EDT 2018}

}

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Monitoring Polysulfide Solubility and Diffusion in Fluorinated Ether‐Based Electrolytes by Operando Raman Spectroscopy
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Title: Polysulfide Speciation in the Bulk Electrolyte of a Lithium Sulfur Battery

Abstract

Citation Formats

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