| 초록 |
KIER has been developing the anode supported flat-tube solid oxide fuel cell for the intermediate temperature(700 ~ 800 oC) operation. Anode supported flat-tube cells have Ni/YSZ cermet anode supported tube, 8 mol.%Y2O3 stabilized ZrO2(YSZ) thin electrolyte, and cathode multi-layer composed of Sr-doped LaSrMnO3 (LSM), LSM-YSZ composite, and LaSrCoFeO3(LSCF). The prepared anode-supported flat tubular cell was joined with ferritic stainless steel by induction brazing furnace process. Current collection for the cathode was achieved by winding Ag wire, while current collection for the anode was achieved by using Ni wire and felt. For making stack, the prepared anode-supported flat-tube cells with effective electrode area of 90 cm2 connected in series with 12 modules, in which one module consists of two cells connected in parallel. The performance of unit cell in 3 % humidified H2 and air at 800 oC shows maximum power density of 0.6W/cm2. Through these experiments, we obtained basic technology of the modified anode-supported flat-tube cell and established the proprietary concept of the anode-supported flat-tube cell stack in KIER. |
