Method of enhancing the wettability of boron nitride for use as an electrochemical cell separator
Abstract
A felt or other fabric of boron nitride suitable for use as an interelecte separator within an electrochemical cell is wetted with a solution containing a thermally decomposable organic salt of an alkaline earth metal. An aqueous solution of magnesium acetate is the preferred solution for this purpose. After wetting the boron nitride, the solution is dried by heating at a sufficiently low temperature to prevent rapid boiling and the creation of voids within the separator. The dried material is then calcined at an elevated temperature in excess of 400.degree. C. to provide a coating of an oxide of magnesium on the surface of the boron nitride fibers. A fabric or felt of boron nitride treated in this manner is easily wetted by molten electrolytic salts, such as the alkali metal halides or alkaline earth metal halides, that are used in high temperature, secondary electrochemical cells.
- Inventors:
-
- Woodland Hills, CA
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 864411
- Patent Number(s):
- 4360578
- Assignee:
- United States of America as represented by Department of Energy (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
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; enhancing; wettability; boron; nitride; electrochemical; cell; separator; fabric; suitable; interelecte; wetted; solution; containing; thermally; decomposable; organic; salt; alkaline; earth; metal; aqueous; magnesium; acetate; preferred; purpose; wetting; dried; heating; sufficiently; temperature; prevent; rapid; boiling; creation; voids; material; calcined; elevated; excess; 400; degree; provide; coating; oxide; surface; fibers; treated; manner; easily; molten; electrolytic; salts; alkali; halides; secondary; cells; electrolytic salt; metal halides; cell separator; secondary electrochemical; solution containing; electrochemical cells; boron nitride; alkali metal; electrochemical cell; aqueous solution; elevated temperature; alkaline earth; metal halide; earth metal; molten electrolytic; organic salt; nitride fiber; thermally decomposable; /429/427/
Citation Formats
McCoy, Lowell R. Method of enhancing the wettability of boron nitride for use as an electrochemical cell separator. United States: N. p., 1982.
Web.
McCoy, Lowell R. Method of enhancing the wettability of boron nitride for use as an electrochemical cell separator. United States.
McCoy, Lowell R. Fri .
"Method of enhancing the wettability of boron nitride for use as an electrochemical cell separator". United States. https://www.osti.gov/servlets/purl/864411.
@article{osti_864411,
title = {Method of enhancing the wettability of boron nitride for use as an electrochemical cell separator},
author = {McCoy, Lowell R},
abstractNote = {A felt or other fabric of boron nitride suitable for use as an interelecte separator within an electrochemical cell is wetted with a solution containing a thermally decomposable organic salt of an alkaline earth metal. An aqueous solution of magnesium acetate is the preferred solution for this purpose. After wetting the boron nitride, the solution is dried by heating at a sufficiently low temperature to prevent rapid boiling and the creation of voids within the separator. The dried material is then calcined at an elevated temperature in excess of 400.degree. C. to provide a coating of an oxide of magnesium on the surface of the boron nitride fibers. A fabric or felt of boron nitride treated in this manner is easily wetted by molten electrolytic salts, such as the alkali metal halides or alkaline earth metal halides, that are used in high temperature, secondary electrochemical cells.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1982},
month = {Fri Jan 01 00:00:00 EST 1982}
}