Bi-Layer p-n Junction Interconnections for Coal Based Solid Oxide Fuel Cells.

Gopalan, S.

Technical Information Center Oak Ridge Tennessee

关键词: Solid electrolyte fuel cells;    Coal;    Interconnections;    Density;    Oxygen;   

RP-ID  :  DE2005841139

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In this report, a new approach for lower operating temperature solid oxide fuel cells (SOFCs) interconnections (IC) consisting of a bi-layer structure is proposed and analyzed. The bi-layer structure consists of a p-type layer exposed to cathodic gas (air/oxygen) and an n-type layer exposed to anodic gas (fuel). It is theoretically shown that the interfacial oxygen partial pressure which is an important design variable, is dependent primarily on the oxygen partial pressure gradient across the IC, the low level oxygen conductivities of the two layers and is largely independent of their electronic conductivities and the total current density through the IC material. Experimental difficulties in fabricating bi-layer structures are presently being addressed.