Related Experiment Video
Updated: Sep 14, 2025
08:23
Niobium Oxide Films Deposited by Reactive Sputtering: Effect of Oxygen Flow Rate
Published on: September 28, 2019
7.5K
A Multi-Element Composition Modulation Strategy for Designing High-Capacity and Stable O3-Type Na-Layered Oxide.
Xubin Wang1,2, Wenfeng Yang3, Yang Yang1,2
1Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials, and Devices, Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Institute of Physics, Beijing, 100190, China.
Advanced Materials (Deerfield Beach, Fla.)
|July 22, 2025
Summary
Developing high-capacity cathodes is key for sodium-ion batteries (SIBs). This study introduces a multi-element strategy for LFANMT cathodes, achieving over 180 mAh g-1 and enhancing cycling stability for advanced SIBs.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Unstable high-capacity cathodes limit sodium-ion battery (NIB) energy density.
- Current high-entropy strategies offer limited specific capacities (<150 mAh g-1).
Purpose of the Study:
- To develop NIB cathodes with enhanced capacity and stability by leveraging multi-element synergy.
- To explore composition modulation for high-performance O3-type layered oxides.
Main Methods:
- Proposed a multi-element composition modulation strategy.
- Synthesized and characterized LFANMT (NaLi0.05Fe0.04Al0.01Ni0.4Mn0.4Ti0.1O2) cathodes.
- Investigated particle morphology, stress distribution, and electrochemical performance.
Main Results:
- Achieved a specific capacity exceeding 180 mAh g-1 at 4.3 V.
- Observed single-crystal particles with beneficial surface compressive stress and bulk tensile stress.
- Demonstrated excellent cycling stability with negligible voltage decay.
Conclusions:
- Multi-element composition modulation is effective for designing high-capacity O3-type layered oxide cathodes for NIBs.
- Synergistic effects among elements are crucial for improving cathode performance.
- Controlling internal stress via particle engineering enhances stability.
