Development of a compact, high-capacity FeS/sub 2/ electrode. [Li--Al/LiCl--KCl/FeS/sub 2/, Mo current collector, 430/sup 0/C, >150 Wh/kg]

Conference · Thu Jan 01 00:00:00 EST 1976 · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)

OSTI ID:7361883

Shimotake, H; Walsh, W J

The development of compact, high-capacity FeS/sub 2/ electrodes which have been used as components of rechargeable engineering cells is described. These cells, which involve molten lithium negative electrodes and LiCl--KCl eutectic electrolyte at 430/sup 0/C, have achieved specific energies greater than 150 Wh/kg. A series of experiments with 7.5-cm-dia Li--Al/FeS/sub 2/ cells was conducted to test various electrode configurations. It was found that a configuration consisting of a porous bed of FeS/sub 2/ particles with molybdenum current collectors provided a highly efficient electrode structure. A thin ceramic cloth was used to retain particulates within the electrode, and electrode expansion was minimized by using a strong exterior support structure. Stable capacities of 0.8 to 1.0 Ah/cm/sup 3/ of electrode volume were achieved. Coulombic efficiencies of approximately 100 percent and energy efficiencies exceeding 80 percent were attained. Conversions of FeS/sub 2/ (to Li/sub 2/S and Fe) of 70 and 95 percent were attained upon discharge at the 4- and 10-h rates, respectively. Average cell voltages of 1.50 V were achieved with lifetimes exceeding 1000 h. 4 figures

• Research Organization: Argonne National Lab., IL
• OSTI ID: 7361883
• Journal Information: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States), Vol. 19:5; Conference: 168. national meeting of American Chemical Society, Atlantic City, NJ, USA, 8 Sep 1974; Other Information: See CONF-740955--P2
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
ELECTRIC-POWERED VEHICLES
LITHIUM-SULFUR BATTERIES
CATHODES
OFF-PEAK ENERGY STORAGE
ALUMINIUM ALLOYS
AUTOMOBILES
EFFICIENCY
ELECTRIC POTENTIAL
LITHIUM ALLOYS
LITHIUM CHLORIDES
MOLYBDENUM
POTASSIUM CHLORIDES
PYRITE
ALKALI METAL COMPOUNDS
ALLOYS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
ENERGY STORAGE
ENERGY STORAGE SYSTEMS
HALIDES
HALOGEN COMPOUNDS
IRON COMPOUNDS
IRON SULFIDES
LITHIUM COMPOUNDS
LITHIUM HALIDES
METAL-NONMETAL BATTERIES
METALS
MINERALS
ORES
POTASSIUM COMPOUNDS
PYRITES
REFRACTORY METALS
STORAGE
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
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250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries