Improved Performance of Silicon-Containing Anodes with Organic Solvent-Solubilized Lithium Nitrate

Rynearson, Leah; Jayawardana, Chamithri; Yeddala, Munaiah; Lucht, Brett L.

doi:10.1149/1945-7111/acdd26

Title: Improved Performance of Silicon-Containing Anodes with Organic Solvent-Solubilized Lithium Nitrate

Abstract

Three different organic solvents (dimethylacetamide (DMAc), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO)) were used to improve the solubility of LiNO ₃ in a standard carbonate-based electrolyte with lithium difluoro(oxalato)borate (LiDFOB) as the salt. Together, the LiDFOB and organic-solvent solubilized LiNO ₃ preferentially reduce on the surface of silicon-containing anodes to create an SEI rich in oxalates, nitrate decomposition species, and B-F species. The improved stability of the SEI throughout the first 100 cycles results in silicon and silicon/graphite composite anodes with better capacity retention than observed with standard electrolytes or fluoroethylene carbonate (FEC) containing electrolytes. This study demonstrates the feasibility of the use of non-traditional electrolyte solvents in the improvement and optimization of lithium ion-battery electrolytes.

Authors:

;

; Yeddala, Munaiah;

Publication Date:: Mon Jun 19 00:00:00 EDT 2023

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1985733

Resource Type:: Published Article

Journal Name:: Journal of the Electrochemical Society

Additional Journal Information:: Journal Name: Journal of the Electrochemical Society Journal Volume: 170 Journal Issue: 6; Journal ID: ISSN 0013-4651

Publisher:: The Electrochemical Society

Country of Publication:: United States

Language:: English

Citation Formats


                    Rynearson, Leah, Jayawardana, Chamithri, Yeddala, Munaiah, and Lucht, Brett L. Improved Performance of Silicon-Containing Anodes with Organic Solvent-Solubilized Lithium Nitrate.  United States: N. p., 2023. 
Web.  doi:10.1149/1945-7111/acdd26.

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                    Rynearson, Leah, Jayawardana, Chamithri, Yeddala, Munaiah, & Lucht, Brett L. Improved Performance of Silicon-Containing Anodes with Organic Solvent-Solubilized Lithium Nitrate.  United States.  https://doi.org/10.1149/1945-7111/acdd26

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                    Rynearson, Leah, Jayawardana, Chamithri, Yeddala, Munaiah, and Lucht, Brett L. Mon .  
"Improved Performance of Silicon-Containing Anodes with Organic Solvent-Solubilized Lithium Nitrate".  United States.  https://doi.org/10.1149/1945-7111/acdd26.

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@article{osti_1985733,

  title        = {Improved Performance of Silicon-Containing Anodes with Organic Solvent-Solubilized Lithium Nitrate},

  author       = {Rynearson, Leah and Jayawardana, Chamithri and Yeddala, Munaiah and Lucht, Brett L.},

  abstractNote = {Three different organic solvents (dimethylacetamide (DMAc), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO)) were used to improve the solubility of LiNO 3 in a standard carbonate-based electrolyte with lithium difluoro(oxalato)borate (LiDFOB) as the salt. Together, the LiDFOB and organic-solvent solubilized LiNO 3 preferentially reduce on the surface of silicon-containing anodes to create an SEI rich in oxalates, nitrate decomposition species, and B-F species. The improved stability of the SEI throughout the first 100 cycles results in silicon and silicon/graphite composite anodes with better capacity retention than observed with standard electrolytes or fluoroethylene carbonate (FEC) containing electrolytes. This study demonstrates the feasibility of the use of non-traditional electrolyte solvents in the improvement and optimization of lithium ion-battery electrolytes.},

  doi          = {10.1149/1945-7111/acdd26},

  journal      = {Journal of the Electrochemical Society},

  number       = 6,

  volume       = 170,

  place        = {United States},

  year         = {Mon Jun 19 00:00:00 EDT 2023},

  month        = {Mon Jun 19 00:00:00 EDT 2023}

}

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Title: Improved Performance of Silicon-Containing Anodes with Organic Solvent-Solubilized Lithium Nitrate

Abstract

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In Situ XRD and Electrochemical Study of the Reaction of Lithium with Amorphous Silicon
journal, January 2004

Nonflammable Electrolytes for Li-Ion Batteries Based on a Fluorinated Phosphate
journal, January 2002

The Critical Role of Fluoroethylene Carbonate in the Gassing of Silicon Anodes for Lithium-Ion Batteries
journal, September 2017

Highly Stable Lithium Metal Batteries by Regulating the Lithium Nitrate Chemistry with a Modified Eutectic Electrolyte
journal, October 2022

Electrochemical and Infrared Studies of the Reduction of Organic Carbonates
journal, January 2001

Structural Changes in Silicon Anodes during Lithium Insertion/Extraction
journal, January 2004

Consumption of Fluoroethylene Carbonate (FEC) on Si-C Composite Electrodes for Li-Ion Batteries
journal, January 2016

Improved Performance of the Silicon Anode for Li-Ion Batteries: Understanding the Surface Modification Mechanism of Fluoroethylene Carbonate as an Effective Electrolyte Additive
journal, March 2015