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An Oxygen-Permeable Bilayer MIEC-Redox Membrane Concept.

Valery V Belousov1, Sergey V Fedorov1

  • 1Laboratory of Functional Ceramics, A.A. Baikov Institute of Metallurgy and Materials Science , Russian Academy of Sciences , 49 Leninskii Prospekt , 119334 Moscow , Russia.

ACS Applied Materials & Interfaces
|June 21, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a novel bilayer mixed ionic-electronic conducting (MIEC)-Redox membrane for improved oxygen separation. The new design overcomes limitations of traditional MIEC membranes, enabling efficient oxygen transport.

Keywords:
chemical diffusiongas bubblesmembranesoxidesoxygen separation

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Electrochemistry

Background:

  • Mixed ionic-electronic conducting (MIEC) membranes are crucial for oxygen separation and energy conversion.
  • Fabrication of asymmetric MIEC membranes often results in thin layers that are not completely gas-tight.
  • Existing methods face challenges in achieving complete hermeticity for efficient oxygen flux.

Purpose of the Study:

  • To introduce and characterize a novel bilayer MIEC-Redox membrane concept.
  • To address the gas-tightness limitations of conventional MIEC membranes.
  • To report the transport properties of a copper oxide-based MIEC-Redox membrane.

Main Methods:

  • Development of a bilayer membrane architecture.
  • Fabrication of a gastight MIEC external layer and a redox-active internal layer.
  • Investigation of transport properties, including oxygen permeation and redox reactions.

Main Results:

  • Successful fabrication of a bilayer MIEC-Redox membrane.
  • Demonstration of a gastight external MIEC layer.
  • Characterization of redox reactions and oxygen bubbling within the internal layer.
  • Reporting of the membrane's transport properties.

Conclusions:

  • The bilayer MIEC-Redox membrane concept offers a promising solution to enhance oxygen separation efficiency.
  • This novel design overcomes the hermeticity issues associated with traditional MIEC membranes.
  • Copper oxide-based MIEC-Redox membranes show potential for advanced energy conversion applications.