Ammonia produced using renewable hydrogen is being viewed as a promising media for the export of energy from locations rich in sources. Solid oxide fuel cells (SOFCs) are efficient devices converting such exported ammonia back into electricity at point use; however, investigations on materials and operating regimes direct fuelled SOFCs limited. In this work, we evaluated SOFC performance with S...

Tendencies toward local atomic ordering in (A,A′)(B,B′)O3−δ mixed composition perovskites are modeled to explore their influence on thermodynamic, transport, and electronic properties. In particular, dopants and defects within lanthanum chromate perovskites are studied under various simulated redox environments. (La1−x ,Srx)(Cr1−y ,Fey)O3−δ (LSCF) and (La1−x ,Srx)(Cr1−y ,Ruy)O3−δ (LSCR) are mod...

Perovskite-structured La1-xSrxCo1-yFeyO3-δ (LSCF) is a promising mixed ionic/electronic-conducting material that exhibits excellent electro-catalytic activity toward oxygen reduction and evolution reactions. LSCF offers potential applications in many processes, such as electrodes for solid oxide fuel cells (SOFCs), sensors, dense membrane separation thus have been studied extensively various fi...

Lanthanum-based electrolytes for Solid Oxide Fuel Cells (SOFCs) gain extensive attention due to their lower activation energy and low-cost preparation convert the stored in gaseous chemicals into electricity. In this context, a La9.33Si6O26-La0.8Sr0.2Ga0.8Mg0.2O2.55 (LSO-LSGM) SOFC electrolyte composite with various mass ratio LSO:LSGM (w/w) (5:0, 4:1, 3:2, 2:2, 2:3, 1:4) are successfully prepa...

An elementary kinetic model was developed to predict the electrochemical response of porous LSCF and LSCF-CGO electrodes. The validated thanks experiments performed on symmetrical cells using a three-electrode setup. After calibration polarization curves, it has been shown that is able simulate accurately experimental impedance diagram at OCP under without additional fitting. Moreover, evolutio...

Strontium doped lanthanum cobalt ferrite (LSCF) is a widely applied electrocatalyst for the oxygen reduction reaction (ORR) in solid-oxide fuel cells (SOFCs) operated at intermediate temperatures. Sr surface segregation in long-term operation has been reported to have contradicting effects that either degrade or improve the reaction. Thus, it is critical to understand the mechanism of surface S...

Based on systematic first principles calculations, we investigate Sr surface segregation (SSS) in La(1-x)Sr(x)Co(1-y)Fe(y)O(3-δ) (LSCF) (a typical perovskite ABO(3) compound), a bottleneck causing efficiency degradation of solid oxide fuel cells. We identify two basic thermodynamic driving forces for SSS and suggest two possible ways to suppress SSS: applying compressive strain and reducing sur...

Abstract Lanthanum strontium cobalt ferrite (LSCF) is an appreciable cathode material for solid oxide fuel cells (SOFCs), and it has been widely investigated, owing to its excellent thermal chemical stability. However, poor oxygen reduction reaction (ORR) activity, particularly at a temperature of ⩽ 800 °C, causes setbacks in achieving peak power density > 1.0 W·cm −2 , limiting application ...

Gadolinia-doped ceria (GDC) is widely used as an interlayer for preventing the formation of SrZrO3 between yttria-stabilized zirconia (YSZ) electrolyte and lanthanum strontium cobalt iron oxides (LSCF) cathode solid oxide fuel cells (SOFCs). However, diffusion Gd ions to YSZ results in decrease ionic conductivity due Gd2(Zr, Ce)2O7. In present work, we focus on lanthanum-doped (LDC) LSCF cathod...