Sodium sulphur cell

Table 11.3. Characteristics of the sodium-sulphur cell (Hitachi)...

Almost all practical sodium-sulphur cells are based on electrolytes formed as closed tubes. These are usually manufactured by isostatic pressing, or electrophoretic deposition of powdered /3-aluminas (or their precursors)... 

Fig. 8.16 Schematic diagram of a sodium-sulphur cell for electric vehicle applications...

Fig. 8.18 Charge-discharge charaderisiics Cor a sodium-sulphur cell. (By permission of Elsevier Sequoia F.G.R. Zobel.. /. Power Saitrrrx. 1978, 3. 29.)...

When all the sulphur has been converted to Na2S5 this compound is gradually converted to Na2S3 as the discharge proceeds. The sodium/sulphur cell operates at a temperature of approximately 350 °C (the melting points of both Na2S5 and Na2S3 are close to 240 °C). 

If the lifetime of Li-based batteries (the term lithium ion batteries for batteries with polar Li-compounds as negative electrodes is very unfortunate) can be further enhanced, they will be also of importance for electrotraction. The classical battery type used in automobiles, viz, the lead-acid accumulator, is distinctly superior in terms of long-time stability but possesses too low an energy content per unit weight as to drive automobiles. Driving car of sensible size and performance with this alone requires a battery weight on the order of 11, (This problem is not removed by using Ni-Cd accumulators,) Much effort has been undertaken to develop a sodium-sulphur cell. In the Na-S cells ... 

An Analysis and Laboratory Assessment of Two Sodium/Sulphur Cell Designs"... 

Some Aspects of Sodium/Sulphur Cell Operation"... 

Polarisation and Corrosion Experiments on Sodium/Sulphur Cells"... 

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