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Related Experiment Video

Updated: Dec 12, 2025

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

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Published on: February 1, 2016

Constructing Stable Anodic Interphase for Quasi-Solid-State Lithium-Sulfur Batteries.

Ying Wei¹, Fei Hu¹, Yuyu Li¹

¹State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.

ACS Applied Materials & Interfaces

|August 14, 2020

Summary

Adding copper fluoride (CuF2) to liquid electrolytes creates a stable interface between solid-state electrolytes and lithium metal anodes. This significantly improves the performance and lifespan of quasi-solid-state lithium-sulfur batteries.

Keywords:

copper fluoride interface lithium metal anode lithium−sulfur batteries quasi-solid-state batteries

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Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

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Published on: January 20, 2023

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Solid-state electrolytes (SSEs) offer a promising alternative to organic separators in lithium-sulfur (Li-S) batteries, aiming to prevent lithium dendrite growth and polysulfide dissolution.
A major challenge remains the high interfacial resistance between SSEs and lithium metal anodes, hindering practical application.

Purpose of the Study:

To develop a stable interphase between an inorganic SSE and a lithium metal anode using a novel electrolyte additive.
To enhance the electrochemical performance of quasi-solid-state Li-S batteries.

Main Methods:

Utilized copper fluoride (CuF2) as an additive in liquid electrolytes to form an interphase layer.
Investigated the interphase stability using Li||Li symmetric cells.
Evaluated the performance of the quasi-solid-state Li-S full cell with the modified interface.

Main Results:

The CuF2 additive successfully constructed a stable interphase between the Li1.5Al0.5Ge1.5(PO4)3 (LAGP) SSE and Li metal.
Li||Li symmetric cells demonstrated exceptional stability, lasting over 1500 hours at 0.1 mA cm-2.
The assembled Li-S full cells exhibited high coulombic efficiency and stable cycling performance (750 mA h g-1 after 50 cycles) at room temperature with minimal liquid electrolyte.

Conclusions:

The developed strategy effectively mitigates interfacial resistance in quasi-solid-state Li-S batteries.
Copper fluoride additive presents a viable approach to enhance the stability and performance of next-generation lithium-sulfur batteries.