The Preparation And Performance Of Functional Anode Materials And Research On Anti-carbon Deposition Of Anode For Direct Hydrocarbon Utilization Of Solid Oxide

Solid oxide fuel cells (SOFC) is an electrochemical device that converts chemistryenergy of the fuel to electrical energy with high energy conversion efficiencies and nopollution. What’s more, Solid oxide fuel cells have attracted more attention for their fuelflexibility, which means they can operate directly on hydrocarbon fuels without complexexternal reforming. It is well known that the traditional Ni-YSZ anode materials for SOFCwill catalyze carbon formation while operating on hydrocarbon fuels.La0.75Sr0.25Cr0.5Mn0.5O3(LSCM) and Cu-CeO2anode materials were synthesized bycitric method and Pechini method, respectively. We also fabricatedLSCM-YSZ/Ni-ScSZ/ScSZ by tape-casting and co-sintering. Cu-LSCM-CeO2anodematerial was synthesized successfully. A three-layer structure anode running on ethanol isfabricated by tape casting and screen printing method, the addition of the Cu-LSCM-CeO2catalyst layer to the LSCM-YSZ support layer and the Ni-ScSZ active layer yields betterperformance in ethanol fuel. Single cells with the three-layer structure anode are alsofabricated.The performance of the cell was stable while running on ethanol fuel, and themaximum power density of390mW cm-2was obtained in ethanol at℃75.0N osignificant degradation in performance has been observed after240h of cell testing whenthe structure anode is exposed to ethanol fuel at750℃. A lm ost no carbon deposition isdetected on the structure anode, suggesting that carbon deposition is limited during celloperation. Consequently, the Cu-LSCM-CeO2catalyst layer on the surface of theLSCM-YSZ support layer makes it possible to have good stability for long-term operationin ethanol fuel due to free carbon deposition.GDC powder and the catalyst powder Cu-LSCM-GDC were synthsised successfully.and a three-layer structure anode running on ethanol is fabricated by tapecasting and screen printing method.The maximum power density of313mW cm-2wasobtained while running on ethanol at℃75.0The anode could exhibit goodelectrochemical performance.