4. Cathodes

Various materials have been considered for use as cathode materials. These include :

chromates ;
oxides ;
sulfides.

Currently, FeS ₂ pyrite is the most widely used material, as it combines the main characteristics required. On the other hand, pyrite can be extracted from ores at a reasonable cost, unlike CoS ₂ , which has to be synthesized.

4.1 Conductive properties of pyrite

Pyrite possesses p- or n-type semiconducting properties, depending on the ore's geographical origin. Its electronic conductivity ranges from 0.3...

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Bibliography

References

(1) - GUIDOTTI (R.A.), MASSET (P.) - J. Power Sources, 161(2), p. 1443 (2006).
(2) - CLARCK (A.J.), THALER (C.), RREID (J.) - Proc. 39 ^th Power Sources Conf., p. 552 (2000).
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