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Study on Synergistic Modification of Mn-Based Oxides by Co-Doping with Fe and Nb and Their Lithium Storage
Jia-Yi Ma1, Zi-Yu Dong1, Li-Yan Tian1
1Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province, School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang, China.
Chemistry, an Asian Journal
|May 9, 2026
Summary
This study introduces Fe-Nb co-doped manganese oxide anodes for lithium-ion batteries. This modification enhances structural stability and charge transfer, significantly improving battery performance and cycle life.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium-ion batteries (LIBs) are crucial for energy storage due to their environmental benefits and high energy density.
- Manganese-based compounds offer high theoretical capacity for LIB anodes but suffer from poor structural stability and slow charge transfer.
- Existing challenges limit the practical application of manganese-based anodes in high-performance LIBs.
Purpose of the Study:
- To develop a novel Fe-Nb dual-element synergistic modification strategy for manganese-based anodes.
- To enhance the structural stability, cycling retention, and electrochemical performance of manganese oxide anodes.
- To provide a new approach for designing advanced anodes for high-performance lithium-ion batteries.
Main Methods:
- Synthesis of Mn-Fe-Nb composite oxides using MnO2, Fe2O3, and Nb2O5 as precursors.
- High-energy ball milling followed by calcination to create the composite anode materials.
- Electrochemical testing to evaluate the performance of the synthesized materials as LIB anodes.
Main Results:
- The optimized Mn:Fe:Nb = 8:1:1 composite anode (Mn/Fe/Nb-1) demonstrated superior electrochemical performance.
- Achieved a reversible capacity of 1044.53 mAh g⁻¹ after 130 cycles.
- Maintained a discharge capacity of 801.35 mAh g⁻¹ at 1 A g⁻¹ after 800 cycles, indicating excellent cycling stability.
Conclusions:
- Fe-Nb co-doping effectively suppresses structural collapse in manganese-based materials.
- The synergistic modification significantly improves reaction kinetics and extends the cycle life of LIB anodes.
- This strategy offers a promising route for developing high-performance anodes for next-generation lithium-ion batteries.
