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

Patent · 19 January 1981

OSTI ID:6260990

Mrazek, F C; Smaga, J A; Battles, J E

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.

• DOE Contract Number: W-31109-ENG-38
• Assignee: Dept. of Energy
• Patent Number(s): None
• OSTI ID: 6260990
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BINDERS
CARBON
CATHODES
CHALCOGENIDES
DESIGN
DISPERSIONS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FABRICATION
GRAPHITE
HALIDES
HALOGEN COMPOUNDS
IRON
IRON COMPOUNDS
IRON SULFIDES
METAL-NONMETAL BATTERIES
METALS
MIXTURES
NONMETALS
POWDERS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS