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Related Experiment Video

Updated: Jun 23, 2026

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
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High-Electron-Insulating Li2O-Assisted Li3N for Highly Stable SEI Formation in High-Performance Li-S Batteries.

Hui Liu1, Hanxiao Wang2, Boshen Zhang1

  • 1College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.

Inorganic Chemistry
|June 20, 2026
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Summary

This study developed a novel lithium metal anode by creating a solid electrolyte interphase (SEI) with lithium nitride (Li3N) and lithium oxide (Li2O). This enhanced anode significantly improves lithium-ion battery cycling stability and performance.

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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Area of Science:

  • Materials Science
  • Electrochemistry
  • Battery Technology

Background:

  • Lithium metal anodes are crucial for high-energy-density batteries but suffer from dendrite formation and interfacial instability.
  • The solid electrolyte interphase (SEI) plays a critical role in regulating ion transport and preventing side reactions.
  • Optimizing SEI composition to enhance Li+ conductivity while suppressing electron conduction is key to stable lithium metal anodes.

Purpose of the Study:

  • To develop an interwoven SEI architecture for lithium metal anodes using in situ coconstruction of Li3N and Li2O.
  • To investigate the formation mechanism and electrochemical properties of the modified lithium anode.
  • To improve the cycling stability and electrochemical performance of lithium metal batteries.

Main Methods:

  • In situ coconstruction of Li3N and Li2O within the SEI using 3-nitro-1,2,4-triazole as a precursor.
  • Density functional theory (DFT) calculations to guide material design.
  • In situ Raman spectroscopy to elucidate the SEI formation mechanism.
  • Electrochemical characterization using symmetric Li||Li cells.

Main Results:

  • The Li3N/Li2O-modified anode exhibited a significantly enhanced Li+ transference number (0.403) compared to bare Li (0.234).
  • Interfacial charge-transfer resistance was reduced to 53.85 Ω, lower than Li3N-Li (77.73 Ω) and bare Li (94.69 Ω).
  • Li||Li symmetric cells demonstrated an extended cycling lifetime of 800 h at 0.5 mA cm-2, over 11 times longer than bare Li.

Conclusions:

  • The interwoven Li3N/Li2O SEI architecture effectively enhances Li+ transport and suppresses electron conduction.
  • The modified lithium anode exhibits superior interfacial stability and electrochemical performance.
  • This strategy offers a promising pathway for developing high-performance and long-lasting lithium metal batteries.