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Title: Electrochemical storage cell containing a substituted anisole or di-anisole redox shuttle additive for overcharge protection and suitable for use in liquid organic and solid polymer electrolytes

Abstract

A electrochemical cell is described comprising an anode, a cathode, a solid polymer electrolyte, and a redox shuttle additive to protect the cell against overcharging and a redox shuttle additive to protect the cell against overcharging selected from the group consisting of: (a) a substituted anisole having the general formula (in an uncharged state): ##STR1## where R.sub.1 is selected from the group consisting of H, OCH.sub.3, OCH.sub.2 CH.sub.3, and OCH.sub.2 phenyl, and R.sub.2 is selected from the group consisting of OCH.sub.3, OCH.sub.2 CH.sub.3, OCH.sub.2 phenyl, and O.sup.- Li.sup.+ ; and (b) a di-anisole compound having the general formula (in an uncharged state): ##STR2## where R is selected from the group consisting of -OCH.sub.3 and -CH.sub.3, m is either 1 or 0, n is either 1 or 0, and X is selected from the group consisting of -OCH.sub.3 (methoxy) or its lithium salt --O.sup.- Li.sup.+. The lithium salt of the di-anisole is the preferred form of the redox shuttle additive because the shuttle anion will then initially have a single negative charge, it loses two electrons when it is oxidized at the cathode, and then moves toward the anode as a single positively charged species where it is then reduced tomore » a single negatively charged species by gaining back two electrons.

Inventors:
 [1];  [2]
+ Show Inventor Affiliations
  1. Oakland, CA
  2. Kobe, JP
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
OSTI Identifier:
872937
Patent Number(s):
6045952
Assignee:
United States of America as represented by United States (Washington, DC)
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
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DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrochemical; storage; cell; containing; substituted; anisole; di-anisole; redox; shuttle; additive; overcharge; protection; suitable; liquid; organic; solid; polymer; electrolytes; described; comprising; anode; cathode; electrolyte; protect; overcharging; selected; consisting; formula; uncharged; str1; och; phenyl; compound; str2; -och; -ch; methoxy; lithium; salt; -o; preferred; form; anion; initially; single; negative; charge; loses; electrons; oxidized; moves; positively; charged; species; reduced; negatively; gaining; positively charged; charged species; negatively charged; shuttle additive; electrochemical storage; electrochemical cell; polymer electrolyte; solid polymer; cell containing; preferred form; redox shuttle; lithium salt; storage cell; polymer electrolytes; described comprising; overcharge protection; liquid organic; negative charge; cell contain; /429/

Citation Formats

Kerr, John B, and Tian, Minmin. Electrochemical storage cell containing a substituted anisole or di-anisole redox shuttle additive for overcharge protection and suitable for use in liquid organic and solid polymer electrolytes. United States: N. p., 2000. Web.
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Kerr, John B, & Tian, Minmin. Electrochemical storage cell containing a substituted anisole or di-anisole redox shuttle additive for overcharge protection and suitable for use in liquid organic and solid polymer electrolytes. United States.
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Kerr, John B, and Tian, Minmin. Sat . "Electrochemical storage cell containing a substituted anisole or di-anisole redox shuttle additive for overcharge protection and suitable for use in liquid organic and solid polymer electrolytes". United States. https://www.osti.gov/servlets/purl/872937.
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@article{osti_872937,
title = {Electrochemical storage cell containing a substituted anisole or di-anisole redox shuttle additive for overcharge protection and suitable for use in liquid organic and solid polymer electrolytes},
author = {Kerr, John B and Tian, Minmin},
abstractNote = {A electrochemical cell is described comprising an anode, a cathode, a solid polymer electrolyte, and a redox shuttle additive to protect the cell against overcharging and a redox shuttle additive to protect the cell against overcharging selected from the group consisting of: (a) a substituted anisole having the general formula (in an uncharged state): ##STR1## where R.sub.1 is selected from the group consisting of H, OCH.sub.3, OCH.sub.2 CH.sub.3, and OCH.sub.2 phenyl, and R.sub.2 is selected from the group consisting of OCH.sub.3, OCH.sub.2 CH.sub.3, OCH.sub.2 phenyl, and O.sup.- Li.sup.+ ; and (b) a di-anisole compound having the general formula (in an uncharged state): ##STR2## where R is selected from the group consisting of -OCH.sub.3 and -CH.sub.3, m is either 1 or 0, n is either 1 or 0, and X is selected from the group consisting of -OCH.sub.3 (methoxy) or its lithium salt --O.sup.- Li.sup.+. The lithium salt of the di-anisole is the preferred form of the redox shuttle additive because the shuttle anion will then initially have a single negative charge, it loses two electrons when it is oxidized at the cathode, and then moves toward the anode as a single positively charged species where it is then reduced to a single negatively charged species by gaining back two electrons.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2000},
month = {Sat Jan 01 00:00:00 EST 2000}
}
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Works referenced in this record:

Redox chemistry of substituted benzenes: the one-electron reduction potentials of methoxy-substituted benzene radical cations
journal, October 1993

Ether Cleavage with Organo-Alkali-Metal Compounds and Alkali Metals
journal, October 1987

Overcharge Protection for Rechargeable Lithium Polymer Electrolyte Batteries
journal, January 1996

Mechanistic study of anodic intramolecular coupling reactions
journal, November 1979

Electron-transfer-induced reductive demethoxylation of anisole: evidence for cleavage of a radical anion
journal, February 1992

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