An anode-supported La0.9Sr0.1Ga0.8Mg0.2O3-delta (LSGM) electrolyte membrane is successfully fabricated by simple, cost-effective spin coating process. Nano-sized NiO and Ce0.8Gd0.2O3-delta (GDC) powders derived from precipitation and citric-nitrate process, respectively, are used for anode support. The dense and uniform LSGM membrane of ca. 50 mu m in thickness is obtained by sintering at relatively low temperature 1300 degrees C for 5 h. A single cell based on the as-prepared LSGM electrolyte membrane exhibits desirable high cell performance and generates high output power densities of 760 mW cm(-2) at 700 degrees C and 257 mW cm(-2) at 600 degrees C. respectively, when operated with humidified hydrogen as the fuel and air as the oxidant. The single cell is characterized by field-emission scanning electron microscope (FESEM). X-ray diffraction (XRD) and electrochemical AC impedance. The results demonstrate that it is feasible to fabricate dense LSGM membrane for solid oxide fuel cell by this simple, cost-effective and efficient process. In addition, optimized anode microstructure significantly reduces polarization resistance (0.025 Omega cm(2) at 700 degrees C). (C) 2010 Elsevier B.V. All rights reserved.