Reduction of voltage delay in the Li/SOCl/sub 2/ system via suitable choice of electrolyte salts

Conference · Sat Oct 01 04:00:00 EDT 1983 · Proc. - Electrochem. Soc.; (United States)

OSTI ID:6408508

Fleischer, N A; Ekern, R J; Manske, S M

New electrolyte salts based on the reaction between NbCl/sub 5/ and either Li/sub 2/S or Li/sub 2/O in SOCl/sub 2/ substantially reduce voltage delay in laboratory half-cells. The maximum effect was obtained with the NbCl/sub 5//Li/sub 2/S combination. The conductivity of both electrolytes is 13.2 mho/cm x 10/sup 3/ at 26/sup 0/C. Observations with scanning electron microscopy (SEM) show that the anode film formed in the new electrolyte has a different morphology and appears less dense than the film formed in control LiAlCl/sub 4/ electrolyte. The anodic rate capability of Li is slightly greater, over a range of overpotentials, in the NbCl/sub 5//Li/sub 2/S electrolyte than in LiAlCl/sub 4/. Atomic absorption, infrared, x-ray photoelectron spectroscopy, and electrochemical analysis suggest that the salt formed by reacting NbCl/sub 5/ with Li/sub 2/S in SOCl/sub 2/ is either Li/sub 2/Nb/sub 2/Cl/sub 10/S or Li/sub 2/Nb/sub 2/Cl/sub 12/. The mechanism for reducing voltage delay and affecting anode film morphology is thought to be associated with the nature of the salt's anion, or possibly the SO/sub 2/ produced when Li/sub 2/S is combined with NbCl/sub 5/ in SOCl/sub 2/.

• Research Organization: Rayovac Corporation, Madison, WI
• OSTI ID: 6408508
• Report Number(s): CONF-831086-
• Conference Information: Journal Name: Proc. - Electrochem. Soc.; (United States) Journal Volume: 84-1
• Country of Publication: United States
• Language: English

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25 ENERGY STORAGE
250902* -- Energy Storage-- Batteries-- Performance & Testing
250903 -- Energy Storage-- Batteries-- Materials
Components
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ABSORPTION SPECTROSCOPY
ALKALI METAL COMPOUNDS
ANODES
CHALCOGENIDES
CHEMICAL ANALYSIS
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