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Related Experiment Video

Updated: Mar 19, 2026

Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems
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An Aurivillius Oxide Based Cathode with Excellent CO2 Tolerance for Intermediate-Temperature Solid Oxide Fuel Cells.

Yinlong Zhu1, Wei Zhou2, Yubo Chen1

  • 1Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P.R. China.

Angewandte Chemie (International Ed. in English)
|June 14, 2016
PubMed
Summary

A novel Aurivillius oxide, Bi2 Sr2 Nb2 MnO12-δ (BSNM), demonstrates exceptional CO2 tolerance and oxygen reduction reaction activity. This cobalt-free cathode material shows great promise for intermediate-temperature solid oxide fuel cells (IT-SOFCs).

Keywords:
Aurivillius oxidescathodeselectrochemistryoxygen reduction reactionsolid oxide fuel cells

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Conversion

Background:

  • Intermediate-temperature solid oxide fuel cells (IT-SOFCs) require advanced cathode materials.
  • Existing cobalt-containing cathodes face challenges with CO2 tolerance and long-term stability.

Purpose of the Study:

  • To investigate the potential of Aurivillius oxide Bi2 Sr2 Nb2 MnO12-δ (BSNM) as a cobalt-free cathode for IT-SOFCs.
  • To evaluate the CO2 tolerance, electrochemical performance, and material stability of BSNM.

Main Methods:

  • Synthesis and characterization of the BSNM oxide.
  • Electrochemical performance testing, including oxygen reduction reaction (ORR) studies.
  • Assessment of thermal expansion coefficient, structural stability, and chemical compatibility with electrolytes.

Main Results:

  • BSNM exhibits complete CO2 tolerance, a unique characteristic among alkaline-earth-containing cathode materials.
  • Favorable oxygen reduction reaction (ORR) activity was observed at intermediate temperatures.
  • BSNM demonstrates a low thermal expansion coefficient, excellent structural stability, and good chemical compatibility.

Conclusions:

  • Bi2 Sr2 Nb2 MnO12-δ (BSNM) is a highly promising cobalt-free cathode material for IT-SOFCs.
  • Its CO2 tolerance and stable performance highlight its potential for next-generation fuel cell technologies.