Unexpectedly high oxygen diffusion coefficients were measured for LaMnO3 at 500 °C, below its phase transition temperature, and in the range of interest potential use micro Solid Oxide Fuel Cells (?-SOFCs).

Solid oxide fuel cells (SOFCs) are able to produce electricity and heat from hydrogen- or carbon-containing fuels with high efficiencies and are considered important cornerstones for future sustainable energy systems. Performance, activation and degradation processes are crucial parameters to control before the technology can achieve breakthrough. They have been widely studied, predominately by...

Among various types of alternative energy devices, solid oxide fuel cells (SOFCs) operating at low temperatures (300-600°C) show the advantages for both stationary and mobile electricity production. Proton-conducting oxides as electrolyte materials play a critical role in low-temperature SOFCs (LT-SOFCs). This review summarizes progress proton-conducting electrolytes LT-SOFCs from to with empha...

Solid oxide fuel cells (SOFCs), which can directly convert chemical energy stored in fuels into electric power, represent a useful technology for a more sustainable future. They are particularly attractive given that they can be easily integrated into the currently available fossil fuel infrastructure to realize an ideal clean energy system. However, the widespread use of the SOFC technology is...

Electrode materials which exhibit high conductivities in both oxidising and reducing atmospheres are in high demand for solid oxide fuel cells (SOFCs) and solid oxide electrolytic cells (SOECs). In this paper, we investigated Cu-doped SrFe0.9Nb0.1O3-δ finding that the primitive perovskite oxide SrFe0.8Cu0.1Nb0.1O3-δ (SFCN) exhibits a conductivity of 63 Scm(-1)and 60 Scm(-1) at 415 °C in air and...

During the last three decades, a large number of investigations has been reported pertaining to the science and technology of solid oxide fuel cells (SOFCs) based mainly on the yttria-stabilized zirconia (YSZ) electrolyte. Because of the problems associated with the high temperature of operation ( ,-~ 1 000 ~ of the YSZ-based cells, there has been a substantial effort to develop alternative ele...

Sr-doped LaMnO3 (LSM) which is the first-generation cathode for solid oxide fuel cells (SOFCs) has been tailored with Zn ions, aiming to achieve improved protonation ability proton-conducting SOFCs (H-SOFCs). The new Sr and co-doped (LSMZ) can be successfully synthesized. first-principle studies indicate that LSMZ improves of LSM decreases barriers oxygen vacancy formation, leading high perform...

The Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) + Co3O4 composite material is evaluated as a cathode for proton-conducting solid oxide fuel cells (H-SOFCs), which provides new strategy to solve the thermal mismatch problem between and electrolyte without impairing performance. BSCF well-known intermediate-temperature SOFCs, but its performance H-SOFCs unsatisfactory. One reason relatively low poor contact ...

Development of chemically stable proton conductors for solid oxide fuel cells (SOFCs) will solve several issues, including cost associated with expensive inter-connectors, and long-term durability. Best known Y-doped BaCeO3 (YBC) proton conductors-based SOFCs suffer from chemical stability under SOFC by-products including CO2 and H2O. Here, for the first time, we report novel perovskite-type Ba...

Abstract Solid oxide fuel cells (SOFCs) are efficient and flexible electrochemical energy conversion devices that can power the future green society with regards to homes, cars, even down portable electronics. They do have potential become low cost, since no noble metals used. Their broad commercialization, however, is hampered by high operating temperatures of 700–900 ° C. Lowering temperature...