Co-synthesis of nano-sized LSM–YSZ composites with enhanced electrochemical property

Synthesis and characterization of nanoparticulate films for intermediate temperature solid oxide fuel cells

“…Co-synthesis of nanostructured composite cathodes was performed by metalorganic and glycine-nitrate processes (GNP). However, these methods suffer from several disadvantages such as inhomogeneity, poor control of stoichiometry, formation of secondary phases and the use of expensive, air sensitive reagent, organic solvents and multi-step processes [18,19].…”

“…6c. The equivalent circuit is proposed by many authors for composite cathodes [18,28,29]. In the circuit, L, CPE and R denote inductance, constant phase element (CPE), and electrode resistance, respectively.…”

“…Wet impregnation of one component of the cathode material by the other component was investigated in detail by Jiang [17,18]. The results indicate high electrochemical activity owing to the development of porous structures from very fine particles with a large TPB area.…”

Performance and stability of La0.8Sr0.2MnO3 cathode promoted with palladium based catalysts in solid oxide fuel cells

“…However, when the operation temperature of the SOFCs is lowered to the intermediate temperature range of 600-800 • C in order to increase the performance long-term stability and widen the materials selectivity, the area specific resistance (ASR) and overpotential of LSM electrodes for the O 2 reduction reaction increase sharply due to the fact that LSM is almost a pure electronic conductor with negligible oxygen ion conductivity [2], and the three phase boundary (TPB) for the reaction is limited to the electrode/electrolyte interface [3][4][5]. Mixing LSM with ionic conducting phase of YSZ or Gd-doped ceria (GDC) can extend the TPB into the electrode bulk and reduce the ASR of the cathodes for the O 2 reduction reaction [6][7][8][9].…”

High performance solid oxide fuel cells with Co1.5Mn1.5O4 infiltrated (La,Sr)MnO3-yittria stabilized zirconia cathodes

“…The lanthanum strontium manganate (LSM) and yittria-stablized zirconia (YSZ) composite is the classical cathode for high temperature SOFCs [3e6], but its catalytic activity for oxygen reduction becomes quite low when operation temperature is below 700 C [7,8]. In order to enhance oxygen reduction activity at low temperatures, various methods, such as new processes for LSM-YSZ composites [9,10], new structure cathodes [11] and introducing active particles into LSM-YSZ cathode through infiltration [12,13] have been investigated.…”