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Related Experiment Video

Updated: Jun 27, 2026

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
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Preserving a Kinetically-Metastable Nanophase by Limited Calcination for High-Performance Protonic Ceramic Cells.

Yue Pang1, Hangbin Lin1, Kuiwu Lin1

  • 1State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Shenzhen Key Laboratory of Deep Underground Engineering Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China.

Advanced Materials (Deerfield Beach, Fla.)
|June 26, 2026
PubMed
Summary

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A novel calcination method creates a metastable nanostructure in reversible protonic ceramic cells. This enhances oxygen reactions, boosting efficiency for energy applications.

Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • Sluggish oxygen reduction/evolution reactions (ORR/OER) at the air electrode limit reversible protonic ceramic cell (r-PCC) efficiency.
  • Conventional calcination methods cause surface passivation or insufficient crystallization, impairing electrocatalytic activity.

Purpose of the Study:

  • To develop a thermally-limited calcination process to create a metastable nanophase in the air electrode for enhanced ORR/OER activity.
  • To improve the efficiency and performance of reversible protonic ceramic cells.

Main Methods:

  • Employed a thermally-limited calcination process to kinetically retain a metastable nanophase.
  • Controlled calcination temperature for selective Ce incorporation into Ba(Co,Fe,Y)O3-δ, preserving the metastable BaCeO3-related nanophase.
Keywords:
heterointerfaceinterface engineeringkinetically‐metastable nanophasereversible protonic ceramic cellsthermally‐limited calcination

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Last Updated: Jun 27, 2026

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  • Characterized the nanostructure's effect on defects, surface exchange, bulk diffusion, proton incorporation, and thermomechanical compatibility.

    • Main Results:

    • The developed electrode (BaCo0.6Fe0.2Y0.1Ce0.1O3-δ-BaCeO3) exhibited low resistance (0.38 Ω cm2 at 550°C).
    • Single cells achieved a peak power density of 1.44 W cm-2 at 650°C.
    • Electrolysis current density reached -2.47 A cm-2 at 1.3 V.

    Conclusions:

    • Thermally-limited calcination is a promising strategy for designing high-performance r-PCCs.
    • The metastable nanostructure significantly enhances electrocatalytic activity for ORR/OER.
    • The approach improves overall r-PCC efficiency and performance for energy applications.