Zhe Lü

Harbin Institute of Technology | HIT · Department of Physics

Metal–supported solid oxide fuel cells (SOFCs) have the merits of quick startup, low cost, and excellent robustness, however, there is a lack of understanding on the effect of thermally driven elemental diffusion. Herein, we investigate the role of elemental diffusion on the evolution of morphologies and electrochemical performance of Ni–Fe alloy s...

Cobalt-free fluorine doped Bi0.7Sr0.3FeO3-δ-xFx oxides are presented here as cathode catalysts of low-temperature solid oxide fuel cells (LT-SOFCs). Their crystal structure, thermal behaviors, catalytic activity, oxygen transport properties, oxygen reduction kinetics, long-term stability and CO2 tolerance are systematically exploited. At 600 °C, th...

Fe-based pervoskite oxides Bi0.5Sr0.5Fe1−xZrxO3−δ (BSFZx, x = 0, 0.05, 0.10 and 0.15) were synthesized and developed by doping of cation Zr as possible cathodes for solid oxide fuel cells (SOFCs). Herein, we carefully investigated the effect of Zr-doped on BSFZx physicochemical property. The Bi0.5Sr0.5Fe0.90Zr0.10O3−δ (BSFZ0.10) cathode shows the l...

It is widely considered that lithium metal is the most ideal anode for the next-generation rechargeable batteries with high energy and power density. The growth of lithium dendrite and low coulombic efficiency, however, result in a sluggish pace for the real application of lithium metal anode. Here, the lithiophilic coating, like the metal oxide-ba...

Micron/nanoporous metals are of great importance in catalysis, sensor, and energy technologies. However, their practical application is limited because the existing fabrication approaches mainly depend on the top-down strategy, such as dealloying and template methods, which often require an introduction of sacrificial materials and an elaborate pro...

La1-xSrxMnO3 is a well-known oxygen electrode for reversible solid oxide cells (RSOCs). However, its poor ionic conductivity limits its performance in redox reaction. In this study, we selected Sm0.5Sr0.5CoO3-δ (SSC) as catalyst and Sm0.2Ce0.8O1.9 (SDC) as ionic conductor and sintering inhibitor to co-modify the La0.65Sr0.35MnO3 (LSM) oxygen electr...

Surface protection has drawn increasing attention in lithium (Li) metal batteries by simultaneously taking advantage of the uniform potential distribution and high conductivity, whereas tuning the composition of the protective film and improving the resistance at the interface of protective film/Li metal remain the challenges. Herein, a solid-state...

Protective surface layer (PSL) is emerging as a popular strategy for lithium (Li) metal protection. Previous reports regarding PSL primarily focus on the two indexes of ionic conductivity and elastic modulus under the precondition of chemical compatibility. Herein, the dielectric property of PSL on Li metal is thoroughly investigated. Although this...

In this work, La 2 NiO 4+ δ - x Ce 0.55 La 0.45 O 2− δ (denoted as LNO- x LDC) with various LDC contents ( x = 0, 10, 20, 30, and 40 wt%) were prepared and evaluated as bifunctional oxygen electrodes for reversible solid oxide cells (RSOCs). Compared with the pure LNO, the optimum composition of LNO-30LDC exhibited the lowest polarization resistanc...

The niobium doping perovskite has been used in anode materials of solid oxide fuel cell. The electronic properties and structural stability of LaFeO3 (LFO) oxide by Nb-doping and the adsorption of H2 molecule at the clean and Nb-doped LFO (001) surface are investigated by theoretical calculations. The calculated results reveal that the band gap of...

Herein, a new type of perovskite oxide PrBaCo2O5+δ (PBCO) was synthesized and optimized by cooperating with carbon nanotubes (CNT) or carbon nanoparticles (BP2000), which was further applied into Li–O2 battery cathode as a bi-functional cathode catalyst, achieving a high discharge capacity of 15.1 mA h, the number of which is over four times than t...

Symmetric cell configuration is commonly used for the study of reaction mechanism and kinetics of oxygen reduction reaction (ORR) and/or oxygen evolution reaction (OER) of solid oxide cells (SOCs) to avoid the issues associated with the possible inaccuracy and errors of the reference electrode in three-electrode cell configuration. The electrode im...

Developing efficient and durable oxygen evolution reaction (OER) electrocatalysts with non-noble elements is particularly urgent for electrochemical water splitting. Herein, we report heterostructural Ni3S2–Fe5Ni4S8 hybrids directly grown on redox-NiFe foams (denoted as NFS/rNF) as excellent pre-catalysts for OER in 1 M KOH media. The electrochemic...

In this work, La 2 NiO 4+δ -xCe 0.55 La 0.45 O 2-δ (denoted as LNO-xLDC) with various LDC contents (x = 0, 10, 20, 30 and 40, wt %) were prepared and evaluated as bifunctional oxygen electrodes for reversible solid oxide cells (RSOCs). Compared with the pure LNO, the optimum composition of LNO-30LDC exhibited the lowest polarization resistance ( R...

In this work, La 2 NiO 4+δ -xCe 0.55 La 0.45 O 2-δ (denoted as LNO-xLDC) with various LDC contents (x = 0, 10, 20, 30 and 40, wt %) were prepared and evaluated as bifunctional oxygen electrodes for reversible solid oxide cells (RSOCs). Compared with the pure LNO, the optimum composition of LNO-30LDC exhibited the lowest polarization resistance ( R...

Developing efficient and nonprecious electrocatalysts for oxygen evolution reaction (OER) is crucial for the hydrogen generation via water splitting. Here we report the direct growth of heterostructural Ni2P–Fe2P hybrid electrocatalysts on NiFe foams. The redox engineered NiFe foam (rNF) significantly enhances the OER performance. Among prepared ca...

The sulfur resistance and regeneration ability of Ni- or Co-impregnated La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCrM) composite anodes are investigated in this study. The sulfur resistance of the composite anodes are assessed after a 5 h sulfur poisoning process. Interestingly, the composite anodes exhibit weak sulfur resistance due to the excellent catalytic...

In this study, we report a kind of highly efficient and environmentally friendly cathode based on yeast derived hydrothermal carbon. Different hydrothermal conditions are explored in order to obtain the optimal hydrothermal carbon based cathode. Then a kind of one-step synthesis method of yeast based cathode is developed to simplify the experimenta...

The rapid development of express logistics industry has yielded more carton wastes, how to utilize them as resources has become an important issue in recent years. In this paper, effective and multifunctional applications of waste carton are explored to obtain products of solid carbon fuel and tar via pyrolysis process. Solid carbon derived from wa...

Traditionally, dendrite growth is considered to be one of the reasons leading to poor performance of lithium metal. However, it is found that the growth of dendrites does not necessarily reduce the coulombic efficiency of lithium metals. Here, the relationships among morphologies, SEI composition and the coulombic efficiency of lithium metal have b...

As anodes for solid oxide fuel cells (SOFCs), one of the significant advantages for perovskite alternatives over conventional Ni-based cermets is the high tolerance to sulfur poisoning. However, there are some controversies on sulfur poisoning mechanisms of perovskite anode cells and many related works are not systematic and convincible enough. Her...

To realize solid oxide fuel cells commercial applications, it is necessary to develop new cathode materials with low-cost, high electrochemical performance and high stability. In this paper, we successfully synthesize a series of Nb-doped LaBaFe2-xNbxO6-δ (x = 0, 0.05, 0.075 and 0.1) cathode materials and present a systematic investigation on their...

The double perovskites GdBaCo2O5.5 (GBCO) is candidate cathode materials for application in intermediate temperature solid oxide fuel cells (IT-SOFCs), attributing to excellent electrical conduction properties and oxidation activity. The electronic structure and the oxygen adsorption at BaO terminated surface of GBCO are investigated using projecto...

Electrochemical reduction of CO2 under the high temperature electrolysis condition with favored kinetics is a promising method to utilize and convert CO2 to valuable chemicals and to reduce its environmental impact. In this work, the electrochemical performance of perovskite-type La0·3Sr0·7Fe0·7Ti0·3O3 (LSFT) oxide was thoroughly investigated as a...

In this work, we report FeCo2O4-xCe0.8Sm0.2O1.9 (x = 0, 30, 40, 50, 60, 70 wt%), catalyst/electrolyte composite oxides, as cathode materials for application in solid oxide fuel cells. Herein a systematic investigation represents the effect of Ce0.8Sm0.2O1.9 incorporation on physical and electrochemical properties. The obtained results indicate that...

As an ideal negative electrode material for next-generation high-energy-density batteries, lithium (Li) metal has received extensive attention from the global research community. However, the safety hazards and short cycle life caused by the growth of Li dendrites have seriously hampered the application of Li metal batteries. Based on electrochemic...

Lithium metal has long been seen as a promising battery anode due to its high specific capacity and low anode potential. However, serious safety hazards and poor electrochemical performance caused by uncontrollable dendritic growth hinder its practical application. Here, a stable [email protected] roll composite electrode is developed by utilizing...

No-precious bifunctional catalysts with high electrochemical activities and stability were crucial to properties of rechargeable zinc-air batteries. Herein, LaNiO3 modified with Ag nanoparticles (Ag/LaNiO3) was prepared by the co-synthesis method and evaluated as the bifunctional oxygen catalyst for oxygen reduction reaction (ORR) and oxygen evolut...

Single-chamber solid oxide fuel cell (SC-SOFC) stacks with different angles between the gas flow direction and the electrode were fabricated and tested in a diluted methane-oxygen mixture. The gas tubes with separated gas vents were used for transmission of the reactant gasses. Experimental results showed that the performance of the two-cell stack...

The delamination of (La,Sr)MnO 3 (LSM) oxygen electrode is considered as a key reason for the degradation of solid oxide electrolysis cells (SOEC). In this study, a YSZ porous layer prepared by spinning coating has been introduced to inhibit significant degradation of LSM oxygen electrode during anodic polarization for 100 h under constant 500 mA c...

Metal foams with high surface/volume ratio and excellent electrical conductivity are widely used in water splitting. Herein, we report a redox process sculpturing commercial NiFe foams with dual-scale porosities as high efficient catalysts for water oxidation reactions. Through the oxidation-reduction process, many pores of few micrometres in size...

Single-chamber solid oxide fuel cell made of conventional materials with two gas tubes located at the different sides of the cell was fabricated and tested in a diluted methane-oxygen mixture to evaluate the influence of various operating parameters on cell performance. The traditional gas supply method was also studied for comparison. Experimental...

To develop new anode material for intermediate temperature-solid oxide fuel cells (IT-SOFCs), layered perovskite PrBaFe 1.75 Nb 0.25 O 5+δ (PBFNO) is synthesized and evaluated. PBFNO is partially decomposed in wet H 2 to form a composite including Fe, Pr 2 O 3 , PrBa 2 Nb x Fe 1-x O 6-δ and survival PBFNO. PBFNO anode not only exhibits good electro...

In this study, we report an eco-friendly and cost-efficient cathode based on sucrose-derived active carbon (SDAC). Ni(NO3)2 is then co-impregnated into the cathode, which is designed to form a hierarchical pore architecture inside the SDAC that takes into account both the mass transport process of O2/Li⁺ and the accommodation of discharge product (...

Direct carbon solid oxide fuel cells (DC-SOFCs) with the novel perovskite La0.3Sr0.7Fe0.7Ti0.3O3–δ (LSFT) electrodes are evaluated by using biochar derived from some one-time toothpicks made of wood as fuel in different discharging modes. The constant current (CC) mode and constant resistance (CR) mode are compared with same fuel cell configuration...

Herein, a new type of perovskite oxide PrBaCo2O5+δ was synthesized and innovatively applied into Li-O2 battery (LOB) system as a cathode catalyst, obtained a specific capacity of over 8000 mAh g⁻¹ and sustained more than 1000 cycles at a fixed capacity of 1000 mAh g⁻¹, the number of which approaches and even exceeds most carbon-based Li-O2 batterie...

Highly active and stable bifunctional catalysts for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) play a vital role in rechargeable zinc-air batteries. In this work, La2O3 and alloy nanoparticles (NiFe and NiCo) decorated nitrogen doped carbon nanotubes hybrids (denoted as La2O3/NiFe-NCNTs and La2O3/NiCo-NCNTs) were succe...

In this work, a novel La1.7Sr0.3Co0.5Ni0.5O4+δ with a layered perovskite structure was synthesized by the sol-gel method and characterized by the X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). Catalytic activities of La1.7Sr0.3Co0.5Ni0.5O4+δ toward oxygen reduction reaction (ORR) and oxygen e...

Actually, Li-O2 batteries can be served as flexible power sources with extremely high specific energy densities to meet the rising demand for flexible and wearable electronic devices. In this work, the electrochemical performance and flexibility of a Li-O2 battery are demonstrated to be significantly enhanced by introducing a KH550–NH4Cl-treated, K...

These years, Li–O2 batteries attract wide interest because of its high theoretical energy density. However, the catalytic activity and porous structure of cathode remains a great challenge. In this work, we developed a hierarchical porous graphene foam to serve as a battery cathode, which has much richer active sites for cathodic reaction and chann...

The novel perovskite La0.8Sr0.2Fe0.9Nb0.1O3-δ (LSFNb) anode for direct carbon-solid oxide fuel cells (DC-SOFCs) is evaluated using activated carbon and corn straw carbon as fuels. Activated carbon possesses less ratio of disorder carbon, smaller average particle size and much higher specific surface area, as well as porous structure with micropores...

The efficiency of impregnation methods for making Cu-based solid oxide fuel cells (SOFCs) is qualitatively characterized for the first time through a conformal coating model. It is found that the low-efficiency results from the uneven distribution of Cu instead of the small loading. Most of the Cu deposits form isolated islands, e.g., in a 20.4 vol...

The low performance and insufficient catalytic activity of the perovskite anodes hinder their further application in intermediate temperature solid oxide fuel cells (IT‐SOFCs). Herein, we report a novel La0.8Sr0.2Fe0.9Nb0.1Pd0.04O3‐δ (LSFNP) anode material with Fe‐Pd co‐exsolutions for IT‐SOFCs. Fe0 and Pd0 metallic nanoparticles are confirmed to e...

Double perovskite oxide GdBaCo2O5+δ (GBCO) is widely investigated as promising cathode for solid oxide fuel cells (SOFCs), but it remains unclear whether GBCO is suitable for application in solid oxide electrolysis cells (SOECs) anode. In this study, the effect of anodic polarization on electrochemical activity and microstructure of GBCO electrode...

In this study, a three-dimensional CNTs-grafted graphene foam has been fabricated by a chemical vapor deposition method. The nanoarchitectured composite is employed as a cathode for lithium-oxygen (Li-O2) batteries and exhibits a substantially enhanced capacity of 20300 mAh g–1 at 0.05 mA cm–2, the number of which is among the highest prototype Li-...

Here, we report a high performance biomass-derived cathode material. Compared to traditional carbon materials, biomass-derived carbon, prepared through the pyrolysis of yeast followed by activation with KOH, shows a great improvement in both catalytic activity and stability. A lithium–oxygen battery that uses the yeast-derived carbon as its cathode...

In this work, we report the significant enhancement of the electrochemical performance and flexibility of a lithium-oxygen battery by introducing a free-standing, binder-free carbon nano-fibers (CNF) grafted carbon paper cathode with a bimodal pore architecture. The small pore structures (~100 nm) accommodated Li2O2, and the large pore structures (...

A novel Nb-doped lanthanum strontium ferrite perovskite oxide La0.8Sr0.2Fe0.9Nb0.1O3-δ (LSFNb) is evaluated as anode material of solid oxide fuel cell (SOFC). The effects of Nb partial substitution on the crystal structure, electrical conductivity and valence of Fe ions are studied. A good structural stability of LSFNb in severe reducing atmosphere...

In this article, we propose a simple redox process to in-situ create a cellular architecture on Ni solid sheet by the direct oxidization (O2) and subsequent reduction (H2) at 750 °C. Nanocrystalline Ni(OH)2 is fabricated on the micro-porous Ni sheet (MPNS) using cathodic electrodeposition method to form a MPNS-Ni(OH)2 electrode for supercapacitor....

A novel La2NiO4+δ-La3Ni2O7−δ-Ce0.55La0.45O2−δ (L2N1-L3N2-LDC) ternary composite with a weight ratio of 0.3:2.5:2.2 was prepared by a one-step co-synthesis method and employed as cathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). X-ray diffraction (XRD) profiles confirmed the successful synthesis of the composite consis...

The electrochemical performance and microstructure stability of PrBaCo2O5+δ (PBCO) cathode are investigated in CO2-containing atmospheres for solid oxide fuel cells (SOFCs). Electrochemical impedance spectra results confirm obvious performance degradation of the PBCO cathodes in the presence of CO2 impurity, especially in high CO2 concentration con...

Pr and Ti co-doped strontium ferrite oxide Pr0.3Sr0.7Ti0.3Fe0.7O3−d (PSTF) has been examined as a hydrogen electrode for solid oxide electrolysis cell (SOEC). X-ray diffraction analysis shows that the PSTF material maintains phase stability during 20 hours of treatment under 5%H2/N2 conditions. An SOEC with a configuration of PSTF||SDC|YSZ||LSM-YSZ...

A high activity ferrite Pr0.3Sr0.7Ti0.3Fe0.7O3−δ (PSTF) has been synthesized and examined as a cathode of solid oxide electrolysis cell (SOEC) for direct high-temperature steam electrolysis. The SOEC with a configuration of PSTF|YSZ|LSM-YSZ was operated under H2O concentrations ranging from 20%H2O/Ar to 60%H2O/Ar and exhibited excellent electrochem...

In this paper, a composite cathode material consisted of 70 wt % La2NiO4+δ and 30 wt % Ce0.55La0.45O2-δ (LNO-LDC) was synthesized by co-synthesized method. The LNO-LDC composite cathode was coated on Sm0.2Ce0.8O1.9 electrolyte and its electrochemical performance was evaluated. The co-synthesized LNO-LDC cathode showed excellent electrochemical perf...

High-temperature tetragonal phase La2NiO4 bulk and surface models have been constructed to investigate electronic structure, surface segregation and oxygen adsorption by first-principle calculations. The electronic structure of La2NiO4 is calculated and compared with previous study. The correlation between the formation of oxygen vacancy and Sr seg...

The understanding of surface chemistry changes on oxygen electrodes is critical for the development of reversible solid oxide fuel cell (RSOFC). Here, we report for the first time that the electrochemical potentials can drastically affect the surface composition and hence the electrochemical activity and stability of PrBaCo2O5+δ (PBCO) electrodes....

In this paper, the surface properties of the (001) surface LaBO3 (B = Mn, Fe, Co, and Ni) perovskites and oxygen adsorption mechanism are investigated using first-principles calculations based on density functional theory (DFT) and pseudopotential method. Surface rumpling and Mulliken effective atomic charges have been obtained. The surface rumplin...

In this study, a carbon–air battery based on a solid oxide fuel cell (SOFC) is demonstrated to continuously generate electric power through a direct oxidation of the biomass wastes. Due to inevitable poisoning gases such as H2S, SO2, CO2 in wastes, more stable La0.75Sr0.25Cr0.5Mn0.5O3–δ (LSCM) instead of Ni is used as the anode material for SOFC. N...

Ni-Y2O3 stabilized ZrO2 (Ni-YSZ) cermet is the most commonly used hydrogen electrode for hydrogen oxidation reaction (HOR) under solid oxide fuel cell (SOFC) mode and water reduction reaction (WRR) under solid oxide electrolysis cell (SOEC) mode. Here we studied the electrocatalytic activity of Ni-YSZ electrodes as a function of Ni content, water c...

The search for colossal permittivity (CP) materials continues to attract considerable interest motivated by not only academic research but also potential applications. Very recently, CP with low dielectric loss was reported in In + Nb co-doped rutile TiO2 polycrystalline ceramics. However, the mechanism of CP in this material system and the effect...

In this paper, we demonstrate the enhanced photodegradation of rhodamine B on polarized ferroelectric KNbO3 (KNO) particles. High-quality KNO samples were prepared using a solid-state reaction and polarized under different electric fields. The variation of XRD and piezoelectric coefficient (d33) suggest an increased intensity of the ferroelectric p...

The effect of Cr deposition and poisoning on the electrochemical activity and microstructure of La0.6Sr0.4Co0.2Fe0.8O3 - δ (LSCF) electrodes is investigated in detail under open circuit conditions at 900 °C, 800 °C and 700 °C in the presence of a Fe-Cr alloy interconnect. The electrochemical performance of LSCF electrodes for the O2 reduction react...

Abstract A simple modification of a conventional nickel-yttria stabilized zirconia (Ni-YSZ) anode for a solid oxide fuel cell (SOFC) by BaCO3 can enhance the coking resistance of the anode in carbon-containing fuels. In this study, X-ray diffraction, Raman spectroscopy, and thermo-gravimetric analysis are used to investigate the chemical reactions...

In this study, La0.3Sr0.7Ti0.3Fe0.7O3-δ (LSTF) is evaluated as a novel symmetrical electrode on SDC(Sm0.2Ce0.8O1.9)-YSZ(yttria-stabilized zirconia)-SDC three-layer electrolyte. Impedance spectroscopy results indicate the polarization resistances of anode and cathode are 0.18 and 0.04 Ω cm2 at 900 °C, respectively, suggesting that the micron-scale L...

The use of a dense film to modify perovskite is a new approach to develop highly stable cathode for solid oxide fuel cell (SOFC). Here, we report that La0.8Sr0.2MnO3 (LSMO) surface decoration led to markedly enhanced stability and activity of conventional Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF). This novel cathode architecture has a potential to make effec...

In this paper, we report the fast and sensitive lateral photovoltacic (LPE) effects in Fe3O4/Si junction. A good rectifying I-V characteristics and large LPE are observed. The LPE exhibits a linear dependence on the position of laser spot, and the position sensitivity can reach 32.5 mV mm-1. The optical response time and relaxation time of LPE were...

Ni-Y 2 O 3 stabilized ZrO 2 (Ni-YSZ) cermet is a widely used hydrogen electrode for solid oxide fuel cells (SOECs), but detailed studies regarding the water splitting processes are scarce. Here we report the preliminary results on the electrocatalytic activity of Ni-YSZ hydrogen electrode in the SOEC mode as a function of operating temperature and...

In this study, comparison experiments are conducted based on yttria-stabilized zirconia (YSZ) electrolyte supported single solid oxide fuel cells (SOFCs) with pure La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCrM) or Ni/CeO2 impregnated LSCrM anodes. The single cells are tested in dry H2 and H2/H2S (50 ppm) mixture, respectively. Compared with the pure LSCrM anod...

(1-xwt%) La0.6PrSr0.4NiO4 - (xwt%) Ce0.8Pr0.2O2 (x = 0, 10, 20, 30, 40, 50), abbreviated as LPSN-xCPO, were prepared and used as composite cathode for intermediate temperature solid oxide fuel cell (IT-SOFC). XRD result suggested that no chemical reaction occurred between LPSN and CPO after sintering at 1200 degrees C for 4 h. Electrical conductivi...

In this paper, the surface properties of the (001) surface in PrMnO3 are investigated using the projector augmented plane wave (PAW) methods within the spin-polarization generalized gradient approximation (GGA+U), where U is on-site Coulomb interaction correction. The result of the total density of states shows a half-metallic ground state for PrMn...

The intrinsically poor electrical conductivity of transition metal oxides is a critical challenge to obtain high electrochemical performance when these materials were used as the electrode of supercapacitor. In this study, the pseudo-capacitance feature of the perovskite (La0.75Sr0.25)0.95MnO3-δ (LSM) having a high electric conductivity of 44.9 S c...

The degradation of solid oxide electrolysis cells (SOECs) is an issue of both scientific and technical importance. In this study, chromium deposition and poisoning at La0.6Sr0.4Co0.2Fe0.8O3- (LSCF) anode or oxygen electrode of SOECs is studied for the first time at 900 oC under current density of 200 mA cm-2. After polarization in the presence of...

A 70 wt.% Sm0.5Sr0.5CoO3 – 30 wt.% Sm0.2Ce0.8O1.9 (SSC–SDC73) composite cathode was co-synthesized by a facile one-step sol–gel method, which showed lower polarization resistance and overpotential than those of physically mixed SSC–SDC73 cathode. The polarization resistance of co-synthesized SSC–SDC73 cathode at 800 °C was as low as 0.03 Ω cm2 in a...

Large thermal mismatch between GdBaCo2O5+δ (GBCO) oxide and solid electrolytes remains a challenge for its application as a cathode of solid oxide fuel cells (SOFCs). To avoid sharp discontinuities in composition, a functionally graded GBCO cathode is developed, which consists of an inner layer with high electrochemical activity and good thermal co...

A novel method for fabricating Ni(NO3)2 solution impregnated YSZ (YSZ: Yttria Stabilized Zirconia) anodes for solid oxide fuel cells (SOFCs) is presented. In order to reduce the impregnation cycles and increase the reliability of the YSZ membrane, a YSZ support with a porosity of ∼60% is soaked in a saturated Ni(NO3)2 solution with an increased tem...