Self-assembled high-entropy Prussian blue analogue nanosheets enabling efficient sodium storage
Yunjiang Gu1, Yonglin Lu1, Pengfei Dai1
1Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China.
Journal of Colloid and Interface Science
|August 2, 2024
Summary
High entropy materials (HEMs) can be self-assembled into porous nanosheets using directional freezing. This novel approach enhances electrochemical performance, particularly for sodium storage applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- High entropy materials (HEMs) offer potential for advanced applications.
- Improving HEM electrochemical performance requires sophisticated structural design.
- Constructing complex high-entropy self-assemblies presents significant challenges.
Purpose of the Study:
- To develop a bottom-up method for creating self-assembled high-entropy nanostructures.
- To investigate the synthesis of high-entropy Prussian blue analogue nanosheets (HE-PBA NSs).
- To evaluate the electrochemical performance of HE-PBA NSs for energy storage.
Main Methods:
- Utilizing a bottom-up directional freezing technique.
- Forming stable high-entropy Prussian blue analogue hydrosols via simultaneous coordination-substitution reactions.
- Guiding nanoparticle assembly using anisotropic ice crystal growth during freezing.
Main Results:
- Successful fabrication of porous high-entropy PBA nanosheets (HE-PBA NSs).
- HE-PBA NSs exhibit superior sodium storage kinetics compared to control materials.
- Enhanced electrochemical performance attributed to high entropy and self-assembled structure.
Conclusions:
- Directional freezing is an effective strategy for constructing high-entropy self-assembled nanomaterials.
- The developed HE-PBA NSs demonstrate promising potential for next-generation sodium-ion batteries.
- Self-assembled nanostructure design significantly boosts the performance of high entropy materials.
Keywords:
Directional freezing routeHigh entropy materialsNa-ion batteriesPrussian blue analogueSelf assembly
