Xingbao Zhu

Xingbao Zhu
Harbin Institute of Technology | HIT · Department of Physics

About

59
Publications
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Introduction

Publications

Publications (59)
Article
Solid-state batteries have received widespread attention due to their excellent stability and safety. However, the low ionic conductivity and weak interface contact have always restricted their performance. In this work, we propose an in-situ thermally cross-linked and solidified polymer electrolyte with polyethylene glycol diacrylate (PEGDA) as sc...
Article
Oxygen selective membranes (OSMs) are considered to be an optimal solution for problems of lithium-air batteries (LABs) operating in an open environment. In this study, we use an electrostatic spinning method to fabricate a porous polytetrafluoroethylene hexafluoropropylene (PVDF-HFP) based oxygen selective membrane that was further impregnated wit...
Article
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...
Article
Emerging graphene quantum dots (GQDs) materials have attracted worldwide attention in biological, optoelectronic and energy-related applications because of their unique features. Herein, we successfully synthesized glucose-derived GQDs through a hydrothermal process, which were further employed as an efficient cathodic catalyst in non-aqueous lithi...
Article
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...
Article
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 (...
Article
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...
Article
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...
Article
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...
Article
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...
Article
Full-text available
Cellular metals with the large surface-to-volume ratios and excellent electrical conductivity are widely applicable and have thus been studied extensively. It is highly desirable to develop a facile and cost-effective process for fabrication of porous metallic structures, more so for micron/nano pores. Herein, we propose a novel direct-flame strate...
Article
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...
Article
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-...
Article
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...
Article
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 (...
Article
Full-text available
Sr-doped LaMnO3 (LSM)/MnO2 composites show different electrochemical performance and thus indicate that LSM has a positive effect on the capacitance of MnO2 electrode. A typical LSM(10 wt%)/MnO2 electrode presents a higher capacitance of 287.8 F g−1 in 1.0 M Na2SO4 aqueous solution, comparing to the pristine MnO2 electrode, 251.7 F g−1. More intere...
Article
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...
Article
Sulfur poisoning and subsequent oxidative regeneration of La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCrM) anode by pure O2 were studied using a model solid oxide fuel cell with yttria-stabilized zirconia (YSZ) electrolyte. Utilization of H2 fuel containing 50 ppm (v) of H2S was found to result in increasing polarization resistance of LSCrM anode and degradation...
Article
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...
Article
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...
Article
(La0.75Sr0.25)0.95MnO3-δ (LSM)/MnO2 composite for supercapacitor (SC) electrode is successfully synthesized via a facile hydrothermal method. The LSM/MnO2 composite shows a flower-like structure and possesses numerous active sites and better conductivity. The as-prepared LSM/MnO2 electrode exhibits a larger specific capacitance of 437.2 F g⁻¹, much...
Article
Novel perovskite-type La0.3Sr0.7Fe0.7Ti0.3O3 (LSFT) oxide is investigated as both anode and cathode materials in a symmetrical solid oxide electrolysis cell (SOEC) for direct electrolysis of pure CO2 at 800 °C. The current density is 521 mA cm− 2 at an applied voltage of 2.0 V. The lowest polarization resistance Rp of this symmetrical SOEC is obtai...
Article
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...
Article
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...
Article
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...
Article
YSZ (Y2O3-stabilized ZrO2)/SDC (Sm-doped CeO2) bilayer electrolyte film was successfully fabricated on NiO/YSZ anode substrate using stepwise sintering processing by screen-printing technique. OCVs (open-circuit voltages) of 1.06 V, 1.05 V and 0.88 V were achieved at 750 °C for single cells with bilayer electrolyte of 12 μm-SDC/8 μm-YSZ, 12 μm-SDC/...
Article
(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...
Article
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...
Article
Full-text available
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...
Article
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...
Article
Full-text available
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...
Article
In this study, we will report our investigation for La0.75Sr0.25Cr0.5Mn0.5O3-delta (LSCrM) based anodes impregnated with solutions of cobalt (Co) nitrate. A YSZ supported SOFC with pure LSCrM anode and La0.7Sr0.3MnO3 (LSM) cathode exhibits the maximum power density (P-max) of 58.7 and 5.2 mW cm(-2) at 850 degrees C in dry H-2 and dry CH4. After the...
Article
This work focuses on the effects of the reducing and sintering behavior for NiO→Ni on the microstructures and performances of conventional Ni/YSZ (YSZ: yttria-stabilized zirconia) anodes for anode-supported solid oxide fuel cells (SOFCs). A strong dependence of reducing and sintering behavior on the initial reduction temperature for NiO→Ni was demo...
Article
Full-text available
The search for a sustainable supply of clean and economical energy has stimulated great interest in fuel cells for direct conversion of chemical fuels to electricity. Among all types of fuel cells, solid oxide fuel cells (SOFCs) are the cleanest and most effi cient ones with excellent fuel fl exibility. They are capable of direct utilization of a w...
Article
Uniform, dense and continuous coatings of La0.8Sr0.2MnO3−δ (LSM) have been successfully deposited on dense/porous La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) substrates via a one-step drop-coating process using a water-based solution in order to improve the operating stability of solid oxide fuel cell cathode. The processing conditions were optimized by precis...
Article
A uniform and dense (relative density 89%) La0.8Sr0.2MnO3-delta (LSM) thin film (84 nm thick) has been prepared on La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) substrate using a water-based sal gel method, in order to improve the operating stability of intermediate temperature cathode. An in situ static electric field was applied in the deposition/drying pr...
Article
Adsorption mechanisms of noble metals (Ag, Pd, Pt) on MnO2-terminated (001) surface and their catalytic role for oxygen adsorption have been investigated using the first-principles density functional theory calculations. The analysis of the adsorption energies reveals that the energetically favorable configuration for Ag and Pd adsorption is at the...
Article
The perovskite-type La0.9Sr0.1Ga0.8Mg0.2O3-δ(LSGM9182) with high oxygen-ionic conductivity is successfully synthesized using conventional solid-state reaction. The phase composition, grain size distribution, relative density, and oxygen-ionic conductivity of the samples are studied. The XRD result shows that the main perovskite LaGaO3 phase can be...
Article
The oxygen adsorption on Ag/LSM(0 0 1) catalysts surfaces has been investigated using first-principles density functional theory calculations. The most favorable oxygen adsorption sites are found to be atop surface Mn atoms on the MnO2-terminated surface and on the hollow positions of the La(Sr)O-terminated LSM(0 0 1) surface. The calculated adsorp...
Article
A sealant-free solid oxide fuel cell (SOFC) micro-stack was successfully operated inside a liquefied petroleum gas (LPG) flame during cooking. This micro-stack consisted of 4 single cells with infiltrated La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM) based composite anodes, achieving an open circuit voltage of 0.92 V and a peak power density of 348 mW cm−2. Th...
Article
The effect of gas supply method on the performance of a single-chamber solid oxide fuel cell micro-stack and single cells was studied, and a novel gas supply method with separated gas vents in the gas tube was proposed. The traditional gas supply method was also investigated for comparison. Results showed that the single cells could obtain a unifor...
Article
We present a high-capacity pseudocapacitor based on a hierarchical network architecture consisting of Co(3)O(4) nanowire network (nanonet) coated on a carbon fiber paper. With this tailored architecture, the electrode shows ideal capacitive behavior (rectangular shape of cyclic voltammograms) and large specific capacitance (1124 F/g) at high charge...
Article
Anode microstructure has a great influence on the cell performance. The addition of urea into impregnated solution has been proposed to tailor the distribution and/or morphology of Cu when fabricating the Cu-based anodes by impregnation method. While the previous reports demonstrated the single cell performance has not been improved in this route,...
Article
In this study, a simple and cost-effective dry-pressing method has been used to fabricate a symmetrical solid oxide fuel cell (SOFC) where the dense yttria-stabilized zirconia (YSZ) electrolyte film is sandwiched between two symmetrical porous YSZ layers in which La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCM) based anode and cathode are incorporated using wet i...
Article
In this study, an anode-supported solid oxide fuel cell (SOFC) has been prepared using a porous yttria-stabilized zirconia (YSZ) anode matrix. The anode was prepared by impregnating the sintered porous YSZ matrix with a nitrate aqueous containing La3+, Sr2+, Cr3+, Fe3+, Ni2+ and urea. The formed anode exhibited high surface area and porosity, and h...
Article
La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCrM)-impregnated anodes have been fabricated by infiltrating 70% porous yttria-stabilized zirconia (YSZ) matrixes with an LSCrM solution. In these anodes, LSCrM is a primary electronic conducive phase while the well-sintered YSZ provides an ionic-conducting pathway throughout the electrode. The maximum power densities...
Article
In this paper, La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCrM) and Ni impregnated porous yttria-stabilized zirconia (YSZ) anodes have been fabricated in two different ways. The testing results demonstrated the excellent performance of the anode made by infiltrating a mixture of LSCrM and Ni(NO3)2 solutions into porous YSZ matrix. After reduction of the anode wi...
Article
An aqueous impregnation method has been developed to incorporate , NiO, and Sm-doped phases into a presintered porous yttria-stabilized zirconia (YSZ) anode matrix to form an effective composite anode, in which the well-sintered YSZ provides a highly connected ion-conducing pathway while a small amount of Ni and SDC acts as catalyst. A single cell...
Article
In this paper, perovskite oxide La0.75 Sr0.25 Cr 0.5 Mn0.5 O3-δ (LSCM) mixed with a small fraction Ni has been used as the anode of single-chamber solid oxide fuel cell(s) operating in a methane-oxygen mixture. The anode is prepared by an ion impregnation method, whereby a proper mixed solution with metal nitrates and urea is incorporated into the...
Article
In the present study, the performances of a single solid oxide fuel cell (SOFC) and a micro-SOFC stack fueled with flame of combusting liquefied petroleum gas (LPG) were studied. La0.75Sr0.25Cr0.5Mn0.5O3-delta and Ni coimpregnated yttria-stabilized zirconia were used as the anode material of the direct-flame SOFC. The operation temperature of the c...
Article
The optimization of electrodes for solid oxide fuel cells (SOFCs) has been achieved via a wet impregnation method. Pure La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCrM) anodes are modified using Ni(NO3)2 and/or Ce(NO3)3/(Sm,Ce)(NO3)x solution. Several yttria-stabilized zirconia (YSZ) electrolyte-supported fuel cells are tested to clarify the contribution of Ni a...
Article
Fe-doped (LSCrFe) oxide was modified as the anode of solid oxide fuel cells. Through vacuum-assisted impregnation processes, nanosized Sm-doped (SDC) and Ni particles were introduced into an anode backbone. With Ni and SDC coimpregnated LSCrFe anodes, the maximum power densities at reached 765 and with and as fuels, respectively, which were much hi...

Projects

Projects (2)
Archived project
Project
SOFC novel cathode materials and Study of solid oxide electrolytic cell oxygen electrode.