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Title: Electrolyte compositions for stabilizing silicon electrodes in lithium batteries

Abstract

A lithium-ion electrochemical cell comprises a first electrode, a second electrode comprising elemental silicon, a microporous separator membrane between the first and second electrodes, and an electrolyte in contact with the electrodes and the membrane. The electrolyte comprises a lithium salt at a concentration in the range of about 0.1 M to about 5 M, and an additional metal salt at a concentration in the range of about 0.001 to about 5 M dissolved in an organic solvent. The additional metal salt comprises a metal cation that can form a lithium-silicon-metal Zintl phase; and the first electrode comprises metallic lithium or a cathode active material capable of donating and accepting lithium ions to and from the second electrode during electrochemical cycling. Electrolytes for use with silicon-containing electrodes also are described.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1859956
Patent Number(s):
11145905
Application Number:
16/375,431
Assignee:
UChicago Argonne, LLC (Chicago, IL)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Patent
Resource Relation:
Patent File Date: 04/04/2019
Country of Publication:
United States
Language:
English

Citation Formats

Vaughey, John T., Han, Binghong, Key, Baris, Key, Fulya Dogan, and Liao, Chen. Electrolyte compositions for stabilizing silicon electrodes in lithium batteries. United States: N. p., 2021. Web.
Vaughey, John T., Han, Binghong, Key, Baris, Key, Fulya Dogan, & Liao, Chen. Electrolyte compositions for stabilizing silicon electrodes in lithium batteries. United States.
Vaughey, John T., Han, Binghong, Key, Baris, Key, Fulya Dogan, and Liao, Chen. Tue . "Electrolyte compositions for stabilizing silicon electrodes in lithium batteries". United States. https://www.osti.gov/servlets/purl/1859956.
@article{osti_1859956,
title = {Electrolyte compositions for stabilizing silicon electrodes in lithium batteries},
author = {Vaughey, John T. and Han, Binghong and Key, Baris and Key, Fulya Dogan and Liao, Chen},
abstractNote = {A lithium-ion electrochemical cell comprises a first electrode, a second electrode comprising elemental silicon, a microporous separator membrane between the first and second electrodes, and an electrolyte in contact with the electrodes and the membrane. The electrolyte comprises a lithium salt at a concentration in the range of about 0.1 M to about 5 M, and an additional metal salt at a concentration in the range of about 0.001 to about 5 M dissolved in an organic solvent. The additional metal salt comprises a metal cation that can form a lithium-silicon-metal Zintl phase; and the first electrode comprises metallic lithium or a cathode active material capable of donating and accepting lithium ions to and from the second electrode during electrochemical cycling. Electrolytes for use with silicon-containing electrodes also are described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {10}
}

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