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Title: Method of preparing porous, rigid ceramic separators for an electrochemical cell

Abstract

Porous, rigid separators for electrochemical cells are prepared by first calcining particles of ceramic material at temperatures above about 1200.degree. C. for a sufficient period of time to reduce the sinterability of the particles. A ceramic powder that has not been calcined is blended with the original powder to control the porosity of the completed separator. The ceramic blend is then pressed into a sheet of the desired shape and sintered at a temperature somewhat lower than the calcination temperature. Separator sheets of about 1 to 2.5 mm thickness and 30 to 70% porosity can be prepared by this technique. Ceramics such as yttria, magnesium oxide and magnesium-aluminum oxide have advantageously been used to form separators by this method.

Inventors:
 [1];  [2]
  1. Naperville, IL
  2. Downers Grove, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
863773
Patent Number(s):
4244898
Assignee:
United States of America as represented by United (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
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; preparing; porous; rigid; ceramic; separators; electrochemical; cell; cells; prepared; calcining; particles; material; temperatures; 1200; degree; sufficient; period; time; reduce; sinterability; powder; calcined; blended; original; control; porosity; completed; separator; blend; pressed; sheet; desired; shape; sintered; temperature; somewhat; calcination; sheets; thickness; 30; 70; technique; ceramics; yttria; magnesium; oxide; magnesium-aluminum; advantageously; form; ceramic powder; ceramic material; aluminum oxide; electrochemical cells; electrochemical cell; magnesium oxide; desired shape; sufficient period; preparing porous; ceramic mater; /264/501/

Citation Formats

Bandyopadhyay, Gautam, and Dusek, Joseph T. Method of preparing porous, rigid ceramic separators for an electrochemical cell. United States: N. p., 1981. Web.
Bandyopadhyay, Gautam, & Dusek, Joseph T. Method of preparing porous, rigid ceramic separators for an electrochemical cell. United States.
Bandyopadhyay, Gautam, and Dusek, Joseph T. Thu . "Method of preparing porous, rigid ceramic separators for an electrochemical cell". United States. https://www.osti.gov/servlets/purl/863773.
@article{osti_863773,
title = {Method of preparing porous, rigid ceramic separators for an electrochemical cell},
author = {Bandyopadhyay, Gautam and Dusek, Joseph T},
abstractNote = {Porous, rigid separators for electrochemical cells are prepared by first calcining particles of ceramic material at temperatures above about 1200.degree. C. for a sufficient period of time to reduce the sinterability of the particles. A ceramic powder that has not been calcined is blended with the original powder to control the porosity of the completed separator. The ceramic blend is then pressed into a sheet of the desired shape and sintered at a temperature somewhat lower than the calcination temperature. Separator sheets of about 1 to 2.5 mm thickness and 30 to 70% porosity can be prepared by this technique. Ceramics such as yttria, magnesium oxide and magnesium-aluminum oxide have advantageously been used to form separators by this method.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}