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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Recycling Solid Electrolytes from All-Solid-State Lithium-Ion Batteries by Using Deep Eutectic Solvents as Green

Yu Chen¹, Zhuojia Shi¹, Xueqing Zhang¹

¹Department of Chemistry and Material Science, Langfang Normal University, Langfang, Hebei, 065000, P. R. China.

|November 8, 2024

Summary

Green deep eutectic solvents (DESs) enable efficient recovery of solid-state electrolytes (SSEs) from all-solid-state lithium-ion batteries (ASSLIBs). This sustainable method offers high lithium leaching efficiency and selectivity at mild temperatures.

Keywords:

Chemical thermodynamics Data driven Deep eutectic solvents Green recovery Ionic liquids Physical properties

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Area of Science:

Materials Science
Electrochemistry
Green Chemistry

Background:

All-solid-state lithium-ion batteries (ASSLIBs) offer enhanced safety and energy density but pose future waste challenges.
Current recovery methods for ASSLIBs lack sustainability, leading to resource depletion and environmental concerns.
Developing eco-friendly and efficient recycling processes for ASSLIBs is critical for a circular economy.

Purpose of the Study:

To investigate the use of green deep eutectic solvents (DESs) for the recovery of solid-state electrolytes (SSEs) from ASSLIBs.
To evaluate the efficiency, selectivity, and conditions for lithium recovery from ASSLIBs using DESs.
To explore methods for recycling dissolved SSEs from the leachate.

Main Methods:

Utilized green deep eutectic solvents (DESs) for the extraction of SSEs from ASSLIBs at mild temperatures.
Quantified lithium leaching efficiency and Li/La selectivity under optimized conditions.
Screened a wide range of anti-solvents to precipitate SSEs from the leachate.

Main Results:

Achieved a lithium leaching efficiency of up to 87.5% using DESs at 80°C.
Demonstrated a high Li/La selectivity of 1902, indicating efficient separation.
Identified 12 effective anti-solvents capable of precipitating SSEs from leachate at room temperature.

Conclusions:

Green deep eutectic solvents provide a sustainable, cost-effective, and safe approach for recovering SSEs from ASSLIBs.
This method facilitates the recovery of valuable materials from spent batteries, promoting resource circularity.
The developed process opens new avenues for the environmentally responsible recycling of advanced battery technologies.