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Updated: Apr 22, 2026
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
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A moisture stable high-entropy halide electrolyte with performance recovery capability for all-solid-state batteries.
Jingran Fu1,2,3, Hongyang Zhang1,2,3, Yuan Tian1,2,3
1National Power Battery Innovation Center, GRINM Group Corporation Limited, Beijing 100088, P. R. China. yangrong@glabat.com.
Materials Horizons
|April 21, 2026
Summary
This study introduces a new, cost-effective high-entropy halide electrolyte (HE-25) with improved moisture stability for solid-state batteries. The electrolyte demonstrates remarkable performance recovery after moisture exposure, paving the way for practical applications.
Area of Science:
- Materials Science
- Electrochemistry
- Solid-State Chemistry
Background:
- Practical application of halide solid electrolytes (HSEs) is limited by poor moisture stability, often requiring expensive elements like indium for optimization.
- Current methods for improving moisture stability in HSEs are costly and may not fully address performance degradation.
- Developing cost-effective and moisture-stable electrolytes is crucial for the advancement of all-solid-state batteries (ASSBs).
Purpose of the Study:
- To develop a novel high-entropy halide electrolyte with enhanced moisture tolerance and cost reduction.
- To investigate the moisture stability mechanism and performance recovery capability of the new electrolyte.
- To evaluate the performance of the developed electrolyte in all-solid-state batteries (ASSBs).
Main Methods:
- Synthesis and characterization of a novel high-entropy halide electrolyte: Li2.65Zr0.25Ta0.25In0.16Zn0.16Fe0.16Cl6 (HE-25).
- Moisture exposure tests and performance evaluation after annealing at 150 °C.
- Fabrication and testing of ASSBs using HE-25 with an NCM89 cathode.
Main Results:
- HE-25 exhibits enhanced moisture tolerance and significant ionic conductivity recovery after annealing, indicating reversible water adsorption.
- The incorporation of low-cost elements (Zn, Fe) reduces the overall cost of the electrolyte.
- ASSBs utilizing HE-25 demonstrated a high first-cycle discharge capacity (211.4 mA h g⁻¹) and good cycling stability (73.2% retention after 500 cycles).
Conclusions:
- A cost-effective, high-entropy halide electrolyte (HE-25) with excellent moisture resistance and performance recovery has been developed.
- The findings suggest that reversible water adsorption, rather than irreversible damage, is responsible for performance degradation.
- This high-entropy strategy offers a promising route for developing practical, durable, and affordable solid-state batteries.
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