| Suppressing Lateral Conduction Loss of Thin-film Cathode by Inserting a Denser Bridging Layer |
| Jung Hoon Park, Seung Hwan Lee, Hyoungchul Kim, Kyung Joong Yoon, Jong-Ho Lee, Seung Min Han1, Ji-Won Son |
High-Temperature Energy Materials Research Center, Korea Institute of Science and Technology
1Graduate School of EEWS, Korea Advanced Institute of Science and Technology |
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| ABSTRACT |
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To reduce the lateral conduction loss of thin-film-processed cathodes, the microstructure of the thin-film cathode is engineered to contain a denser bridging layer in the middle. By doing so, the characteristic crack-like pores that separate the cathode domains in thin-film-processed cathodes and hamper lateral conduction are better connected and, as a result, the sheet resistance of the cathode is effectively reduced by a factor of 5. This induces suppression of the lateral conduction loss and expansion of the effective current collecting area; the cell performance is improved by more than 30%. |
| Key words:
Solid oxide fuel cell, Thin-film cathode, Pulsed laser deposition, Current collection |
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