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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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Manipulating Layered P2@P3 Integrated Spinel Structure Evolution for High-Performance Sodium-Ion Batteries.

Yan-Fang Zhu¹, Yao Xiao², Wei-Bo Hua³

¹Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2522, Australia.

Angewandte Chemie (International Ed. in English)

|February 26, 2020

Summary

Engineered a novel P2@P3 integrated spinel oxide cathode for sodium-ion batteries. This material demonstrates excellent electrochemical performance and provides insights into structure-performance relationships for advanced battery design.

Keywords:

layered structures oxide cathodes sodium-ion batteries spinel structure structural evolution

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Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

The structural evolution of battery cathodes significantly impacts sodium-ion battery performance.
Developing stable and high-performance cathode materials is crucial for advancing sodium-ion battery technology.

Purpose of the Study:

To design and investigate a novel layered P2@P3 integrated spinel oxide cathode for sodium-ion batteries.
To understand the structure-property relationships and structural evolution during battery cycling.

Main Methods:

Crystal structure engineering and chemical substitution were employed to synthesize the Na_0.5 Ni_0.1 Co_0.15 Mn_0.65 Mg_0.1 O₂ cathode.
Atomic-resolution scanning transmission electron microscopy (STEM) was used for structural characterization.
In situ synchrotron-based X-ray absorption spectra (XAS) and X-ray diffraction (XRD) were utilized to study the electrochemical processes and structural changes.

Main Results:

The P2@P3 integrated spinel structure was successfully synthesized and characterized.
Excellent electrochemical performance was observed in both sodium-ion half and full battery configurations.
The study visualized the charge compensation mechanism, structural evolution, and phase transitions during cycling.

Conclusions:

The P2@P3 integrated spinel oxide cathode exhibits superior performance in sodium-ion batteries.
Understanding and manipulating structural evolution is a promising strategy for designing next-generation high-performance battery cathodes.
This work opens new avenues for developing advanced energy storage materials.