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Title: Method for uniformly distributing carbon flakes in a positive electrode, the electrode made thereby and compositions. [Patent application]

Abstract

A positive electrode for a secondary electrochemical cell is described wherein an electrically conductive current collector is in electrical contact with a particulate mixture of gray cast iron and an alkali metal sulfide and an electrolyte including alkali metal halides or alkaline earth metal halides. Also present may be a transition metal sulfide and graphite flakes from the conversion of gray cast iron to iron sulfide. Also disclosed is a method of distributing carbon flakes in a cell wherein there is formed an electrochemical cell of a positive electrode structure of the type described and a suitable electrolyte and a second electrode containing a material capable of alloying with alkali metal ions. The cell is connected to a source of electrical potential to electrochemically convert gray cast iron to an iron sulfide and uniformly to distribute carbon flakes formerly in the gray cast iron throughout the positive electrode while forming an alkali metal alloy in the negative electrode. Also disclosed are compositions useful in preparing positive electrodes.

Inventors:
; ;
Publication Date:
OSTI Identifier:
6260990
Assignee:
Dept. of Energy TIC; ERA-06-034936; EDB-81-115891
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; METAL-NONMETAL BATTERIES; CATHODES; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; BINDERS; CARBON; DESIGN; ELECTRODES; FABRICATION; GRAPHITE; HALIDES; IRON; IRON SULFIDES; MIXTURES; POWDERS; SULFIDES; CHALCOGENIDES; DISPERSIONS; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ELEMENTS; HALOGEN COMPOUNDS; IRON COMPOUNDS; METALS; NONMETALS; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries

Citation Formats

Mrazek, F.C., Smaga, J.A., and Battles, J.E. Method for uniformly distributing carbon flakes in a positive electrode, the electrode made thereby and compositions. [Patent application]. United States: N. p., 1981. Web.
Mrazek, F.C., Smaga, J.A., & Battles, J.E. Method for uniformly distributing carbon flakes in a positive electrode, the electrode made thereby and compositions. [Patent application]. United States.
Mrazek, F.C., Smaga, J.A., and Battles, J.E. Mon . "Method for uniformly distributing carbon flakes in a positive electrode, the electrode made thereby and compositions. [Patent application]". United States.
@article{osti_6260990,
title = {Method for uniformly distributing carbon flakes in a positive electrode, the electrode made thereby and compositions. [Patent application]},
author = {Mrazek, F.C. and Smaga, J.A. and Battles, J.E.},
abstractNote = {A positive electrode for a secondary electrochemical cell is described wherein an electrically conductive current collector is in electrical contact with a particulate mixture of gray cast iron and an alkali metal sulfide and an electrolyte including alkali metal halides or alkaline earth metal halides. Also present may be a transition metal sulfide and graphite flakes from the conversion of gray cast iron to iron sulfide. Also disclosed is a method of distributing carbon flakes in a cell wherein there is formed an electrochemical cell of a positive electrode structure of the type described and a suitable electrolyte and a second electrode containing a material capable of alloying with alkali metal ions. The cell is connected to a source of electrical potential to electrochemically convert gray cast iron to an iron sulfide and uniformly to distribute carbon flakes formerly in the gray cast iron throughout the positive electrode while forming an alkali metal alloy in the negative electrode. Also disclosed are compositions useful in preparing positive electrodes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}