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Updated: Aug 9, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Published on: August 12, 2013

Long-Lifespan Lithium Metal Batteries Enabled by a Hybrid Artificial Solid Electrolyte Interface Layer.

Zengzhong Cheng^1,2, Ya Chen^1,2, Lei Shi^1,2

¹CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China.

ACS Applied Materials & Interfaces

|February 21, 2023

Summary

Researchers developed a novel artificial solid electrolyte interface (SEI) for lithium metal batteries. This SEI, composed of lithium fluoride (LiF) and silver nanoparticles (Ag), effectively suppresses dendrite formation, enhancing battery safety and longevity.

Keywords:

cycling stability hybrid SEI lithium metal batteries synergetic effect uniform lithium deposition

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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Published on: November 11, 2013

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Lithium metal batteries offer high energy density but face safety challenges due to lithium dendrite growth.
Dendrites can cause short circuits and reduce battery lifespan, hindering practical application.

Purpose of the Study:

To develop an effective strategy for suppressing lithium dendrite formation in lithium metal anodes.
To enhance the cycling stability and safety of lithium metal batteries.

Main Methods:

Fabrication of an artificial solid electrolyte interface (SEI) on a lithium anode (LNA-Li) using a simple replacement reaction.
The SEI composition includes lithium fluoride (LiF) and nano-silver (Ag).
Evaluation of the LNA-Li anode's performance in symmetric cells and full cells with LiFePO4 and NCM cathodes.

Main Results:

The artificial SEI effectively suppressed lithium dendrite formation.
LNA-Li//LNA-Li symmetric cells demonstrated stable cycling for 1300 h (1 mA cm⁻²) and 600 h (10 mA cm⁻²).
Full cells with LiFePO4 cathodes achieved 1000 stable cycles without significant capacity fade; good performance was also observed with NCM cathodes.

Conclusions:

The synergetic effect of LiF and Ag in the artificial SEI promotes uniform and dense lithium deposition.
The developed LNA-Li anode exhibits excellent stability and safety, paving the way for practical high-energy-density lithium metal batteries.