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Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems

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Published on: May 26, 2019

Novel Mn1.5Co1.5O4 spinel cathodes for intermediate temperature solid oxide fuel cells.

Huanying Liu¹, Xuefeng Zhu, Mojie Cheng

¹State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.

Chemical Communications (Cambridge, England)

|December 18, 2010

Summary

Mn(1.5)Co(1.5)O(4) spinel oxide shows excellent stability and performance as a cathode material for intermediate-temperature solid oxide fuel cells. It offers a promising alternative to traditional cathodes, reducing polarization resistance and enhancing overall efficiency.

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Area of Science:

Materials Science
Electrochemistry
Energy Conversion

Background:

Solid oxide fuel cells (SOFCs) are advanced energy conversion devices.
Developing efficient and stable cathode materials is crucial for intermediate-temperature SOFCs (IT-SOFCs).
Traditional cathodes like Sr-doped LaMnO(3) face challenges in long-term stability and performance.

Purpose of the Study:

To investigate the potential of Mn(1.5)Co(1.5)O(4) spinel oxide as a cathode material for IT-SOFCs.
To evaluate the electrochemical performance and stability of Mn(1.5)Co(1.5)O(4) when in contact with Y(2)O(3)-stabilized ZrO(2) (YSZ) electrolyte.
To compare the performance of Mn(1.5)Co(1.5)O(4) with conventional cathode materials.

Main Methods:

Synthesis of Mn(1.5)Co(1.5)O(4) spinel oxide.
Fabrication of composite cathodes using Mn(1.5)Co(1.5)O(4) and YSZ.
Electrochemical impedance spectroscopy (EIS) to measure electrode polarization resistance.
Performance testing of SOFCs with Mn(1.5)Co(1.5)O(4) cathodes.

Main Results:

Mn(1.5)Co(1.5)O(4) spinel oxide exhibited no visible reaction with the YSZ electrolyte.
The electrode polarization resistances for Mn(1.5)Co(1.5)O(4) based cathodes were significantly lower than those of traditional Sr-doped LaMnO(3)-YSZ cathodes.
Good electrochemical performance was observed, indicating high efficiency.

Conclusions:

Mn(1.5)Co(1.5)O(4) spinel oxide is a highly stable and promising cathode material for IT-SOFCs.
Its superior performance and compatibility with YSZ electrolyte make it a strong candidate for next-generation SOFC technology.
This material offers a viable alternative to current cathode materials, potentially improving SOFC efficiency and longevity.