A5102659550- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Semiconductor materials and devices
- Extraction and Separation Processes
- Magnetic Properties and Synthesis of Ferrites
- Advanced battery technologies research
- Semiconductor materials and interfaces
Beijing Institute of Technology
2023-2024
Abstract We successfully synthesized a series of O3‐type NaNi 1/3 Fe Mn 1/3− x Zr O 2 ( = 0, 0.01, 0.02, 0.04) cathode materials by the solid‐state reaction method. Energy dispersion spectroscopy, X‐ray diffraction (XRD), and photoelectron spectroscopy results confirmed successful incorporation elements into lattice to substitute Mn. Due introduction 4+ , crystal structure modulation O3‐NaNi has been realized. By increasing content, width sodium diffusion layer expands, thereby facilitating...
The electrochemical properties of O3-NaNi 1/3 Fe 1/3− x Mn Y O 2 cathode materials for sodium ion batteries are significantly improved by using yttrium substitution strategy to realize the micro-modulation crystal structure.
Configuration entropy is increased by doping with multiple cations, whereby the material defects and active sites are phase transition inhibited at high voltage. Meanwhile, sodium-ion diffusion rate was improved co-doping strategy.
Introducing electrochemically active or inactive metal ion substitution is a well-known modification strategy in the layered transition-metal oxide cathode materials for sodium batteries. However, introduction of ions into layer often triggers redox reaction anionic oxygen. The charge compensation induced by oxygen can improve specific capacity material, whereas it also brings problems, such as voltage hysteresis and attenuation sluggish kinetics. Here, we propose high-entropy using Li, Cu,...
Layered transition metal oxides are widely considered as ideal cathode materials for SIBs. However, the existing P2 and O3 structures possess specific issues, which limit their practical applications. To address these this work designed a novel intergrowth layered oxide with phases by implementing Cu Ti into structure formation of high-entropy superior performance The electrochemical test results show that optimized P2/O3 possesses high initial discharge capacity 157.85 mAh g