journal article·2026

Al/Ti Co-doped Fe/Mn-based layered oxide for high-performance sodium-ion storage

Wenshuo Zhao, Yanzhe Zhang, Yongli Wang, Tong Wu, Yingying Zhang, Jingjing Sun, Xiangrong Liu, Yongjie Zhao

Nanoscale· Volume 18· Issue 23
Publisher page

Abstract

Fe-Mn based layered transition metal oxides are compelling candidates for sodium-ion cathodes owing to their high specific capacity and cost-effectiveness. However, their practical application is hampered by inherent challenges, including the Jahn-Teller effect, lattice oxygen loss, and transition metal dissolution. In this study, an Al/Ti co-doped Na0.67Fe0.4Mn0.4Al0.1Ti0.1O2 (FM-AT) cathode is proposed and prepared. The introduction of Al/Ti effectively stabilizes the lattice oxygen structure by forming strong Al-O and Ti-O bonds, thereby suppressing oxygen redox activity and enhancing its reversibility. Furthermore, the stability of the transition metal layer is effectively enhanced, suppressing transition metal dissolution and the P2-OP4 phase transition associated with TMO2 layer slippage in deep charge states. The FM-AT demonstrated excellent cycling stability, with a capacity of 137.1 mAh g-1 at 20 mA g-1 and a capacity retention of 85.5% after 50 cycles (55.7% for the pristine FM cathode). Even after 200 cycles at 200 mA g-1, a capacity retention of 72.1% was achieved (versus 20.9% for the FM). This work offers a novel method for enhancing the structural stability of iron-manganese based electrodes and designing cost-effective, high-performance sodium ion cathodes.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Magnetic Properties and Synthesis of Ferrites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China

Inner Mongolia Engineering Research Centre of Lithium-Sulfur Battery Energy Storage, Inner Mongolia Key Laboratory of Solid State Chemistry for Battery, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, PR China

School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, 526000, PR China

Inner Mongolia Engineering Research Centre of Lithium-Sulfur Battery Energy Storage, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, PR China

Inner Mongolia Key Laboratory of Solid State Chemistry for Battery, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao, 028000, PR China

Funding

Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China · State Key Laboratory of Clean Energy Utilization · Beijing Institute of Technology

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