Patent ID: 8802321

Claim:
Apparatus comprising: a solid oxide fuel cell comprising a graded multilayer structure, the graded multilayer structure comprising a support layer ( 1 ) and at least 10 layers ( 2 , 3 ) forming a graded layer, wherein each of the at least 10 layers ( 2 , 3 ) is at least partially in contact with the support layer ( 1 ), wherein the at least 10 layers ( 2 , 3 ) differ from each other in at least one property selected from layer impurity level, abrasiveness, mechanical strength, and material cost, and wherein the at least 10 layers ( 2 , 3 ) are arranged such that the layer impurity level, abrasiveness, mechanical strength, and/or material cost horizontally to the support layer ( 1 ) forms a gradient over the total layer area.