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Updated: Sep 17, 2025
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
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Spinel-Layered Heterostructure Enables Reversible Oxygen Redox in Lithium Manganese Oxide
Yanfang Wang1,2,3, Cheng Li4, Yulin Cao1
1Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
Angewandte Chemie (International Ed. in English)
|July 2, 2025
Summary
Researchers developed a novel lithium manganese oxide with spinel-layered heterostructures, LMO-SH, demonstrating reversible oxygen redox activity. This breakthrough advances high-capacity cathode materials for next-generation lithium-ion batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Battery Technology
Background:
- Lithium-rich manganese-based layered oxides (LRMOs) are key for next-gen lithium-ion batteries (LIBs) due to high capacity from oxygen redox.
- Conventional lithium manganese oxide (LMO) lacks bulk redox activity without other transition metals.
Purpose of the Study:
- To engineer a lithium manganese oxide with spinel-layered heterostructures (LMO-SH) exhibiting reversible oxygen redox activity.
- To investigate the role of interfacial architecture in facilitating Li+ diffusion and activating oxygen redox.
Main Methods:
- Synthesis of structural-engineered lithium manganese oxide with spinel-layered heterostructures (LMO-SH).
- Experimental characterization techniques.
- Theoretical modeling and simulation.
Main Results:
- LMO-SH demonstrated reversible oxygen redox activity between lattice oxygen (O2-) and molecular oxygen (O2).
- This is the first documented instance of such redox behavior in a manganese-based material.
- The spinel-layered interfacial architecture enhanced Li+ diffusion kinetics and activated bulk oxygen redox.
Conclusions:
- Mechanistic understanding of redox chemistry in LMO-based materials is advanced.
- Strategic phase engineering provides new design principles for high-capacity LIB cathodes.
- LMO-SH represents a significant step towards developing advanced energy storage solutions.
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