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3D-Printed Hierarchical Porous Frameworks for Sodium Storage
Junwei Ding1, Kai Shen1, Zhiguo Du1
1Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science and Engineering, Beihang University , 100191 Beijing, China.
ACS Applied Materials & Interfaces
|November 11, 2017
Summary
3D printing sodium-ion batteries is challenging due to compact structures. New hierarchical porous frameworks using GO-contained inks enable efficient sodium ion transport, boosting battery capacity and stability.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Conventional 3D printing inks for sodium-ion batteries create compact structures hindering electrolyte infiltration and sodium ion diffusion.
- This limitation results in low reversible capacities and poor battery performance.
Purpose of the Study:
- To develop novel 3D printable inks for creating hierarchical porous frameworks for enhanced sodium storage.
- To overcome the limitations of compact structures in 3D printed battery components.
Main Methods:
- Designing and utilizing well-defined graphene oxide (GO)-contained inks for 3D printing.
- Fabricating hierarchical porous frameworks with continuous filaments and multihole gridding.
Main Results:
- The 3D printed frameworks exhibit continuous filaments and hierarchical multihole structures.
- These structures facilitate rapid transport of sodium ions and electrons.
- The batteries demonstrate high specific capacity, excellent rate performance, and stable cycling for 900 cycles.
Conclusions:
- 3D printed hierarchical porous frameworks offer a promising approach for advanced sodium-ion battery design.
- The developed GO-contained inks and resulting structures significantly improve sodium storage performance.
