Lanthanum strontium chromite manganite

The anode of the lightweight SOFC is made from Nickel oxide (NiO) and yttria-stabilized zirconia. For the electrolyte, yttria-stabUized zirconia is also used, while the cathode is made from lanthanum strontium manganite (LSM) (cf. previous section). The same material is used for the contact layer. Lanthanum strontium chromite is applied as a ceramic protective coating for chromium retention. The noble gas argon is used as an auxiliary medium in the vacuum plasma spraying process [71]. 

Optimizing the materials [yttrium-stabilized zirconia (YSZ) for the electrolyte, lanthanum strontium manganite for the cathode, nickel for the anode, and lanthanum magnesium chromite for the interconnect]. 

H. Nishiyama, M. Aizawa, H. Yokokawa, T. Horita, N. Sakai, M. Dokiya, T. Kawada, Stability of lanthanum chromite-lanthanum strontium manganite interface in solid oxide fuel cells. J. Electrochem. Soc. 143(7), 2332-2341 (1996)... 

Fig. 13.22. The monolithic SOFC concept of Argonne National Laboratory. Anode nickel-yttria-stabilized zirconia. Cathode strontium-doped lanthanum manganite. Interconnect doped lanthanum chromite, a, Interconnection b, electron-ion path c, anode d, electrolyte e, cathode. (Reprinted from K. Kordesch,...

The anode material in SOFCs is a cermet (metal/ceramic composite material) of 30 to 40 percent nickel in zirconia, and the cathode is lanthanum manganite doped with calcium oxide or strontium oxide. Both of these materials are porous and mixed ionic/electronic conductors. The bipolar separator typically is doped lanthanum chromite, but a metal can be used in cells operating below 1073 K (1472°F). The bipolar plate materials are dense and electronically conductive. 

---