Xiaoyong Xu

ORCID: 0000-0002-0149-815X
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About
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Research Areas
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Advancements in Solid Oxide Fuel Cells
  • Electronic and Structural Properties of Oxides
  • Catalysis and Oxidation Reactions
  • Electrocatalysts for Energy Conversion
  • Advanced battery technologies research
  • Metallurgical Processes and Thermodynamics
  • Magnetic and transport properties of perovskites and related materials
  • Catalytic Processes in Materials Science
  • Metal Extraction and Bioleaching
  • Fuel Cells and Related Materials
  • Advancements in Battery Materials
  • Chemical Looping and Thermochemical Processes
  • Thermal Expansion and Ionic Conductivity
  • Per- and polyfluoroalkyl substances research
  • Advanced Battery Materials and Technologies
  • Photonic Crystal and Fiber Optics
  • Chalcogenide Semiconductor Thin Films
  • Advanced Fiber Laser Technologies
  • CO2 Reduction Techniques and Catalysts
  • Perovskite Materials and Applications
  • Machine Learning in Materials Science
  • Minerals Flotation and Separation Techniques
  • Carbon Dioxide Capture Technologies

Peking University Shenzhen Hospital
2025

The University of Queensland
2013-2024

Hubei University
2024

The University of Adelaide
2023-2024

National University of Defense Technology
2024

Chaohu University
2020-2022

Brisbane School of Theology
2014-2017

A highly defective CeO<sub>2</sub> supported RuO<sub>2</sub> as an electrocatalyst shows improved OER activity and stability in alkaline media. This improvement likely originates from the oxidative oxygen species O<sub>2</sub><sup>2−</sup>/O<sup>−</sup> formed CeO<sub>2</sub>, which can easily migrate “spillover” to surface of during process.

10.1039/c4ta05770h article EN Journal of Materials Chemistry A 2014-11-11

Abstract The slow activity of cathode materials is one the most significant barriers to realizing operation solid oxide fuel cells below 500 °C. Here we report a niobium and tantalum co-substituted perovskite SrCo 0.8 Nb 0.1 Ta O 3−δ as cathode, which exhibits high electroactivity. This has an area-specific polarization resistance low ∼0.16 ∼0.68 Ω cm 2 in symmetrical cell peak power densities 1.2 0.7 W −2 Gd Ce 0.9 1.95 -based anode-supported at 450 °C, respectively. performance attributed...

10.1038/ncomms13990 article EN cc-by Nature Communications 2017-01-03

Foam fractionation is a well-developed technology used to separate surface-active compounds from solution by exploiting their affinity for the air–water interface. The was founded in 1940s and has since evolved into key treatment of many different pollutants variety industries such as textiles dyes, heavy metals, proteins food processing waste even per- poly-fluoroalkyl substances (PFAS). progressed standard batch process continuous with an applied reflux being presently in-situ groundwater...

10.1080/01496395.2021.1946698 article EN Separation Science and Technology 2021-07-18

Strontium cobaltite-based perovskites (SrCoO3−δ) have been widely studied as a promising cathode for the next-generation solid-oxide fuel cell (SOFC). Here, we found balance between oxygen vacancy (VO) formation and its migration in designing SrCoO3−δ-based materials by using two activity descriptors, i.e., radius electronegativity. The ORR of these types is to strongly rely on proposed Nb- or Ta-doped SrCoO3−δ locates zone predicted with moderate value both VO energy ion barrier. Then Sc–Ta...

10.1021/jacs.1c03441 article EN Journal of the American Chemical Society 2021-06-18

Efficient catalysts are imperative to accelerate the slow oxygen reaction kinetics for development of emerging electrochemical energy systems ranging from room-temperature alkaline water electrolysis high-temperature ceramic fuel cells. In this work, we reveal role cationic inductive interactions in predetermining vacancy concentrations 235 cobalt-based and 200 iron-based perovskite at different temperatures, trend can be well predicted machine learning techniques based on lattice...

10.1038/s41467-024-53578-7 article EN cc-by-nc-nd Nature Communications 2024-10-29

Perovskite oxides are extensively utilized in energy storage and conversion. However, they conventionally screened via time-consuming cost-intensive experimental approaches density functional theory. Herein, interpretable machine learning is applied to identify perovskite from virtual perovskite-type combinations by constructing classification regression models predict their thermodynamic stability above the convex hull (Eh), respectively, interpreting using SHapley Additive exPlanations....

10.1039/d3ra08591k article EN cc-by-nc RSC Advances 2024-01-01

Solid oxide fuel cells (SOFCs) offer promising prospects for sustainable electricity generation, attributed to high efficiency and adaptability. However, their widespread application relies on three critical factors: performance, cost-effectiveness, durability. Durability presents a significant hurdle; one key reason is the thermal expansion mismatch between cobalt-based cathodes electrolytes, potentially leading detachment at cathode-electrolyte interface. In this study, we propose an...

10.1016/j.jpowsour.2024.235143 article EN cc-by Journal of Power Sources 2024-08-06

La-doped SrTiO 3 perovskite was explored as anode for methane coupling in solid oxide cells. DFT showed can achieve higher conversions when activated on surfaces with fewer oxygen vacancies and more lattice oxygen.

10.1039/d3ta07648b article EN Journal of Materials Chemistry A 2024-01-01

In this paper a phosphorus doped perovskite, SrCo0.85Fe0.1P0.05O3−δ (SCFP), is evaluated as cathode material for intermediate-temperature solid oxide fuel cells. It observed that the dopant can prevent Sr–Co–Fe–O system from oxygen vacancy ordering and stabilise crystallite structure of in 3C perovskite phase at high temperature proved by XRD, TGA, O2-TPD electrical conductivity characterization. SCFP shows excellent chemical compatibility with Sm0.2Ce0.8O1.9 (SDC) electrolyte even 1200 °C....

10.1039/c3ta12781h article EN Journal of Materials Chemistry A 2013-01-01

Performance degradation caused by carbon deposition substantially restricts the development of direct methane solid oxide fuel cells (SOFCs). Here, an internal reforming layer composed Ni supported on proton conducting La-doped ceria, such as La2Ce2O7 (LDC) and La1.95Sm0.05Ce2O7 (LSDC) is applied over conventional Ni-Ce0.8Sm0.2O2-x (SDC) anodes for SOFCs. The can adsorb water thus significantly improving performance In situ Raman FTIR results confirm adsorption capacity LDC LSDC. They also...

10.1021/acsami.7b07938 article EN ACS Applied Materials & Interfaces 2017-09-11

Numerous issues influencing the device performance at buried interface of perovskite solar cells exist. Modifying constitutes a key to enhancing efficiency and stability cells. In this work, we propose small molecule material, (3-bromopropyl)trimethoxysilane (BTS), as an efficient modifier for regular It can interact with -OH groups on SnO2 uncoordinated Pb formamidinium (FA) vacancies in perovskite, thereby passivating defects layers, improving extraction transportation charge carriers...

10.1021/acsami.5c01522 article EN ACS Applied Materials & Interfaces 2025-03-18

We present a comprehensive investigation on the laser properties of longitudinal spindle-shaped Yb-doped fibers (SYDFs), focusing transverse mode instability (TMI) and stimulated Raman scattering (SRS), by conducting theoretical experimental comparisons with traditional uniform double-clad fibers. The underlying physical mechanisms for TMI SRS characteristics in SYDF amplifiers are revealed through detailed analysis. indicate that showcases slightly weaker threshold than fiber same...

10.1364/oe.558282 article EN cc-by Optics Express 2025-03-24

Intermediate-temperature proton-conducting solid oxide cells (P-SOCs) have emerged as a promising technology for power generation and hydrogen production. They gained significant attention due to their lower operating temperature, higher...

10.1039/d5ee00983a article EN Energy & Environmental Science 2025-01-01

10.1016/j.ijhydene.2013.02.066 article EN International Journal of Hydrogen Energy 2013-03-14
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