Thermally Robust Thin-Film SOFCs for Mobile Application

Micro-solid oxide fuel cells (SOFCs) is newly designed and fabricated using porous stainless-steel (STS) as a support. The thin-film components with nano-porous electrodes and dense electrolyte, i.e., La 0.7 Sr 0.3 CoO 3- δ (LSC, ~1μm) | 8YSZ (~1μm) | Ni-8YSZ (~1μm), are deposited by using pulsed laser deposition (PLD) method and show the high power density (~560 mW/cm 2 at 550 o C). In addition, thermal cycling characteristic, tested for the first time, show that the cells cycled between 100 and 550 o C with 100 o C/min rate exhibit little performance drop. These results strongly demonstrate the cell for portable mobile application.