Commenced in January 2007
Paper Count: 30135
Preparation and Conductivity Measurements of LSM/YSZ Composite Solid Oxide Electrolysis Cell Anode Materials
Abstract:One of the most promising anode materials for solid oxide electrolysis cell (SOEC) application is the Sr-doped LaMnO3 (LSM) which is known to have a high electronic conductivity but low ionic conductivity. To increase the ionic conductivity or diffusion of ions through the anode, Yttria-stabilized Zirconia (YSZ), which has good ionic conductivity, is proposed to be combined with LSM to create a composite electrode and to obtain a high mixed ionic and electronic conducting anode. In this study, composite of lanthanum strontium manganite and YSZ oxide, La0.8Sr0.2MnO3/Zr0.92Y0.08O2 (LSM/YSZ), with different wt.% compositions of LSM and YSZ were synthesized using solid-state reaction. The obtained prepared composite samples of 60, 50, and 40 wt.% LSM with remaining wt.% of 40, 50, and 60, respectively for YSZ were fully characterized for its microstructure by using powder X-ray diffraction (XRD), Thermogravimetric analysis (TGA), Fourier transform infrared (FTIR), and Scanning electron microscope/Energy dispersive spectroscopy (SEM/EDS) analyses. Surface morphology of the samples via SEM analysis revealed a well-sintered and densified pure LSM, while a more porous composite sample of LSM/YSZ was obtained. Electrochemical impedance measurements at intermediate temperature range (500-700 °C) of the synthesized samples were also performed which revealed that the 50 wt.% LSM with 50 wt.% YSZ (L50Y50) sample showed the highest total conductivity of 8.27x10-1 S/cm at 600 oC with 0.22 eV activation energy.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1128131Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1154
 W. Wang et al., “A comparison of LSM, LSF and LSCo for Solid Oxide electrolyzer anodes”, Journal of Electrochemical Society, 153(11), 2006, A2066-A2070.
 F. Suleman, I. Dincer, & M. Agelin-Chaab, “Environmental impact assessment and comparison of some hydrogen production options”, International Journal of Hydrogen Energy, 40(21), 2015, 6976-6987.
 A. Brisse and P. Mocoteguy, “A review and comprehensive analysis of degradation mechanisms of solid oxide electrolysis cells”, International Journal of Hydrogen Energy, 38, 2013, 15887-15902.
 P. Kazempoor P. and R.J. Braun, “Hydrogen and synthetic fuel production using high temperature solid oxide electrolysis cells (SOECs)”, International Journal of Hydrogen Energy, 40(9), 2015, 3599-3612.
 A. Nechache and M. Cassir, A. ringuede, “Solid oxide electrolysis cell analysis by means of electrochemical impedance spectroscopy: A review”, Journal of Power Sources, 258, 2014, 164-181.
 N. Li et al., “Mitigation of the delamination of LSM anode in Solid Oxide electrolysis cells using Manganese-modified Yttria-Stablized Zirconia”, International Journal on Hydrogen Energy, 38(15), 2013, 6298-6303.
 M. Ni, Michael K.H. Leung, D. Leung, “Technological development of hydrogen production by Solid Oxide electrolyzer cell (SOEC)”, International Journal of Hydrogen Energy, 33(9), 2008, 2337-2354.
 M. Keane, Manoj K. Mahapatra, Atul Verma 1, Prabhakar Singh, “LSM/YSZ interactions and anode delamination in solid oxide electrolysis cells”, International Journal of Hydrogen Energy, 37(22), 2012, 16776-16785.
 E. Shin et al., “Polarization mechanism of high temperature electrolysis in a Ni-YSZ/YSZ/LSM solid oxide cell by parametric impedance analysis”, Solid State Ionics, 232, 2013, 80-96.
 R. B. Cervera, et.al., “Perovskite-Structured BaScO2(OH) as a Novel Proton Conductor: Heavily Hydrated Phase Obtained via Low-Temperature Synthesis”, Chem. Mater. 25, 2013, 1483-1489.
 R. B. Cervera, et.al., “Nanograined Sc-doped BaZrO3 as a proton conducting solid electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs)”, Solid State Ionics, 264, 2014, 1-6.
 M. B. Kakade, K. Bhattacharyya, R. Tewari, R. J. Kshirsagar, A. K. Tyagi, S. Ramanathan, G. P. Kothiyal & D. Das, “Nanocrystalline La0.84Sr0.16MnO3 and NiO-YSZ by Combustion of Metal Nitrate-Citric Acid/Glycine Gel – Phase Evolution and Powder Characteristics”, Transactions of the Indian Ceramic Society, 72:3, 2013, 182-190.