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Highly efficient layer-by-layer-assisted infiltration for high-performance and cost-effective fabrication of
Yuri Choi1, Sihyuk Choi, Hu Young Jeong
1Department of Energy Engineering, §UNIST Central Research Facilities (UCRF), Department of Mechanical and Advanced Materials Engineering, and #Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 689-798, Korea.
Abstract:
We present a novel cathode fabrication technique for improved performance and production efficiency of SOFCs based on an infiltration method assisted by layer-by-layer (LbL) assembly of polyelectrolytes. Preparation of the electrode with LbL-assisted infiltration leads to a 6.5-fold reduction in the electrode fabrication time while providing uniform and small formation of Pr0.7Sr0.3CoO3-δ (PSC) particles on the electrode. The increased surface area by 24.5% and number of active sites of the prepared electrode exhibits superior electrochemical performance up to 36.1% while preserving the electrical properties of the electrode. Because of its versatility and tenability, the LbL-assisted infiltration process may become a new route for fabrication of composite electrodes for other energy storage and conversion devices.
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