Characterization of voltage losses during high-intensity current pulses in reactive, porous electrodes of molten salt cells
Abstract
A technique for the rapid characterization of the power-related properties of porous electrodes of molten salt cells has been developed. In this method, the electrode properties were investigated under one-dimensional current-distribution conditions in small test cells of 0.3 to 1.5 Ah capacity. The electrode potential was measured against a Ni/Ni3S2 or Li-Al reference electrode located so that the IR-voltage drop was eliminated. At different states of charge, galvanostatic discharge or charge current pulses of different intensity and duration were applied to the electrode by high-precision power sources. The state of charge for the electrode was determined from the quantity of the coulombs passed in galvanostatic cycling and is indicated here by the numeric value of x in the generic formula of the active material (e.g., x in FeS/sub x). Electrode materials iron sulfide, nickel sulfide, Li-Al and Li-Si alloys in LiCl-KCl and LiF-LiCl-LiBr molten salt electrolytes were investigated.
- Publication:
-
Presented at Intern. Soc. of Electrochem
- Pub Date:
- 1984
- Bibcode:
- 1984isec.proc.....R
- Keywords:
-
- Electric Potential;
- Electrodes;
- Losses;
- Molten Salts;
- Pulses;
- Lithium Chlorides;
- Lithium Fluorides;
- Nickel;
- Performance Tests;
- Porous Materials;
- Potassium Chlorides;
- Silicon Alloys;
- Electronics and Electrical Engineering