Hochtemperatur-Brennstoffzelle und aus solchen bestehender Hochtemperatur-Brennstoffzellenstapel

摘要

The invention relates to a high-temperature fuel cell (2) in which two electrodes (8, 12) are arranged between composite conducting structures (4, 16; 22, 20, 24) which remove the current produced in the high temperature fuel cell (2) and supply the electrodes (8, 12) with an operating means. At least one composite conducting structure (4, 16; 22, 20, 24) consists at least partially of an alloy based on Fe with a Cr content of between 17 and 30 % by weight which has an average coefficient of thermal expansion in the temperature range of room temperature to 900 DEG C. Said coefficient of thermal expansion is adapted to the coefficient of thermal expansion of the electrolyte (10) and is 13 to 14x10<-6>/K, thereby reducing material costs for the composite conducting structures (4, 16; 22, 20, 24) by a factor of 10 to 20 in comparison with prior art composite conducting structures.