Effective conductivities of a negative electrode in an Li-Al/FeS cell at different states of charge

Autor:	M. Hiroi, H. Shimotake
Rok vydání:	1984
Předmět:	Chemistry General Chemical Engineering Inorganic chemistry Analytical chemistry Electrolyte Conductivity Electrochemistry Electrical resistivity and conductivity Volume fraction Electrode Materials Chemistry Porosity Electrical conductor
Zdroj:	Journal of Applied Electrochemistry. 14:755-757
ISSN:	1572-8838 0021-891X
DOI:	10.1007/bf00615264
Popis:	Effective conductivities of porous negative electrodes containing Li-Al or Al as the initial active material were experimentally determined at 450° C for different states of discharge by means of an a.c. impedance bridge. When a negative electrode having a theoretical loading density of 0.83 Ah cm−3 was discharged, the effective conductivity decreased from approximately 20 to 5 ohm−1 cm−1. This decline in the effective conductivity is attributed to the decrease in the volume fraction of conductive materials (Li-Al and Al) in the electrode. A theoretical calculation shows that the total volume fraction of conductive Li-Al and Al governs the resistance behaviour of the negative electrode because of little effect of change in the pore electrolyte conductivity and of low volume fraction of the solid salt precipitated.
Databáze:	OpenAIRE
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