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Process for the manufacture of an electrochemical high temperature cell. Verfahren zur Herstellung einer elektrochemischen Hochtemperaturzelle

Abstract

Separators of such cells must be resistant to corrosion and insensitive to cyclical changes of volume. Appropriate materials (e.g. BeO, ThO/sub 2/, Si/sub 3/N/sub 4/) are however not ion-conducting, and must therefore be used with an open structure. In well-known ceramic separators, the space between the electrodes has small separator material poured into it, and this causes variations in porosity and density; also the cells are loaded by the necessary shaking and vibration. The process of the invention consists of mixing the finely divided separator material and/or the electrodes with electrolyte powder and a plastic which is completely decomposed by heat. The mixture is rolled into a flat plate, and this is fitted in the cell individually or as a compound electrode/separator plate. After assembly, the whole cell is heated above the decomposition temperature of the plastic. A solution of polyisobutylene in cyclohexane is preferred, where the proportion is 2-5%. The separator material is used with two grain sizes, large particles of 2 mm diameter (40-80%) and fine particles in the range 5-60 ..mu..m (60-20%).
Publication Date:
Apr 29, 1982
Product Type:
Patent
Report Number:
DE 3032552; A
Reference Number:
FRG-84-04963; EDB-85-078734
Resource Relation:
Patent File Date: Filed date 29 Aug 1980
Subject:
25 ENERGY STORAGE; BATTERY SEPARATORS; CERAMICS; FABRICATION; LITHIUM-SULFUR BATTERIES; EUTECTICS; HIGH TEMPERATURE; MIXING RATIO; MOLTEN SALTS; PARTICLE SIZE; POLYMERS; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; METAL-NONMETAL BATTERIES; SALTS; SIZE; 250901* - Energy Storage- Batteries- Design & Development
OSTI ID:
5760837
Country of Origin:
Germany
Language:
German
Availability:
Deutsches Patentamt, Muenchen, Germany, F.R.
Submitting Site:
DE
Size:
Pages: 10
Announcement Date:
May 13, 2001

Citation Formats

Chobanov, T, Kunze, D, and Woeffler, F. Process for the manufacture of an electrochemical high temperature cell. Verfahren zur Herstellung einer elektrochemischen Hochtemperaturzelle. Germany: N. p., 1982. Web.
Chobanov, T, Kunze, D, & Woeffler, F. Process for the manufacture of an electrochemical high temperature cell. Verfahren zur Herstellung einer elektrochemischen Hochtemperaturzelle. Germany.
Chobanov, T, Kunze, D, and Woeffler, F. 1982. "Process for the manufacture of an electrochemical high temperature cell. Verfahren zur Herstellung einer elektrochemischen Hochtemperaturzelle." Germany.
@misc{etde_5760837,
title = {Process for the manufacture of an electrochemical high temperature cell. Verfahren zur Herstellung einer elektrochemischen Hochtemperaturzelle}
author = {Chobanov, T, Kunze, D, and Woeffler, F}
abstractNote = {Separators of such cells must be resistant to corrosion and insensitive to cyclical changes of volume. Appropriate materials (e.g. BeO, ThO/sub 2/, Si/sub 3/N/sub 4/) are however not ion-conducting, and must therefore be used with an open structure. In well-known ceramic separators, the space between the electrodes has small separator material poured into it, and this causes variations in porosity and density; also the cells are loaded by the necessary shaking and vibration. The process of the invention consists of mixing the finely divided separator material and/or the electrodes with electrolyte powder and a plastic which is completely decomposed by heat. The mixture is rolled into a flat plate, and this is fitted in the cell individually or as a compound electrode/separator plate. After assembly, the whole cell is heated above the decomposition temperature of the plastic. A solution of polyisobutylene in cyclohexane is preferred, where the proportion is 2-5%. The separator material is used with two grain sizes, large particles of 2 mm diameter (40-80%) and fine particles in the range 5-60 ..mu..m (60-20%).}
place = {Germany}
year = {1982}
month = {Apr}
}