Journal Archive

Platinum Metals Rev., 1962, 6, (3), 99

Ceramic Thermoelectric Generator

Platinum and Nickel Oxide Junctions

A ceramic thermoelectric generator, developed by the Minneapolis-Honeywell Regulator Company for the United States Army, is capable of an output of 100 volts at temperatures of around 1300°C.

The unit, illustrated here, consists of a pack of fourteen alumina plates, the continuous series of junctions being formed from platinum—produced by firing on a platinum paste—and a sprayed coating of lithium-doped nickel oxide. The cold junctions are developed by heat losses due to conduction and radiation. The platinum metallising paste is also used to connect the plates together, the pack then being assembled with ceramic nuts and bolts.

The unit is now being tested by the United States Army, utilising waste heat such as exhaust gases from rocket engines and from re-entry nose cone heating.

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