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Related Experiment Video

Updated: Aug 28, 2025

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
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Photoassisted High-Performance Lithium Anode Enabled by Oriented Crystal Planes.

Weizhai Bao1,2, Ronghao Wang1, Chengfei Qian1

  • 1Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing 210044, People's Republic of China.

ACS Nano
|September 22, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel photoassisted anode for lithium metal batteries. This design suppresses dendrite growth, achieving high Coulombic efficiency for safer, next-generation energy storage.

Keywords:
crystal plane orientationdendrite-freedual-functionlithium metal anodesmorphology regulationphotoassisted

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Lithium metal anodes are crucial for high-performance lithium-ion batteries (LIBs).
  • Uncontrolled lithium dendrite growth poses safety risks and limits Coulombic efficiency (CE) in LIBs.
  • Current research on stable lithium anodes focuses on tailored deposition and photoassisted current collectors, with limited studies available.

Purpose of the Study:

  • To design a cost-effective, dendrite-free anode for lithium metal batteries.
  • To improve lithium deposition and Coulombic efficiency using a customized-facet/photoassisted synergistic approach.
  • To investigate the mechanisms behind photoassisted lithium deposition for enhanced battery performance.

Main Methods:

  • Fabrication of a customized-facet anode with a (002) plane nanorod array/microsphere composite structure.
  • Utilizing a photoassisted synergistic process for lithium deposition and stripping.
  • Characterization of lithium deposition behavior, overpotential, and Coulombic efficiency under cycling conditions.

Main Results:

  • The tailored (002) plane demonstrated strong lithium affinity, reducing Li+ nucleation overpotential and promoting uniform deposition.
  • Photoassisted deposition induced electron-hole separation, forming a weakly charged layer and reducing overpotential by 8.3 mV.
  • Achieved a high Coulombic efficiency of approximately 99.3% at the 300th cycle (2 mA cm-2), indicating stable cycling.

Conclusions:

  • The developed customized-facet/photoassisted synergistic anode effectively suppresses lithium dendrite growth.
  • This approach significantly enhances electrochemical performance, offering a promising pathway for next-generation lithium metal batteries.
  • The findings hold great significance for advancing photoassisted lithium metal anode technology.