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Measuring Properties of the Membrane Periodic Skeleton of the Axon Initial Segment using 3D-Structured Illumination Microscopy 3D-SIM
Published on: February 11, 2022
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Spherical Li Deposited inside 3D Cu Skeleton as Anode with Ultrastable Performance.
Yanyan Wang1, Zhijie Wang1, Danni Lei1,2
1Engineering Laboratory for the Next Generation Power and Energy Storage Batteries, Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , P. R. China.
ACS Applied Materials & Interfaces
|June 5, 2018
Summary
This study introduces a 3D copper (Cu) skeleton current collector with open pores to improve lithium metal anode performance. This design enhances safety and rechargeability by preventing lithium dendrite growth.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Porous current collectors can improve lithium metal anode properties.
- Diffusion path congestion during plating hinders current collector effectiveness.
- Lithium dendrite growth remains a critical challenge for anode safety and stability.
Purpose of the Study:
- To develop a novel 3D copper (Cu) skeleton with open micrometer-sized pores.
- To investigate the impact of this porous structure on lithium plating and dendrite mitigation.
- To enhance the safety and rechargeability of lithium metal anodes.
Main Methods:
- Fabrication of a 3D Cu skeleton using a NaCl-assisted powder-sintering method.
- Characterization of the porous structure and surface properties.
- Electrochemical testing of lithium metal anodes utilizing the developed current collector.
Main Results:
- The 3D Cu skeleton exhibits open micrometer-sized pores, reducing diffusion path congestion.
- Lithium deposition predominantly occurs within the current collector's pores.
- The large, smooth surface area promotes uniform lithium deposition, forming spherical shapes and mitigating dendrite growth.
- Improved safety and rechargeability of the lithium metal anode were demonstrated.
Conclusions:
- The developed 3D Cu skeleton effectively addresses diffusion path congestion during lithium plating.
- This porous current collector design significantly suppresses lithium dendrite formation.
- The enhanced lithium metal anode exhibits superior safety and prolonged rechargeability.
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