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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Published on: August 12, 2013

Closed-loop cathode recycling in solid-state batteries enabled by supramolecular electrolytes.

Jiwoong Bae¹, Zhuoying Zhu², Jiajun Yan³

¹The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.

Science Advances

|August 11, 2023

Summary

This summary is machine-generated.

Researchers developed novel organo-ionic (ORION) electrolytes for solid-state batteries (SSBs). These electrolytes enable easy cathode recycling, extending battery life and promoting sustainability in energy storage.

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Area of Science:

Materials Science
Electrochemistry
Sustainable Chemistry

Background:

Recycling solid-state batteries (SSBs) is challenging due to the difficulty in separating components like cathodes and solid electrolytes.
Current methods for deconstructing and remanufacturing SSB materials are intensive and costly.

Purpose of the Study:

To design novel electrolytes that facilitate both the fabrication of high-performance SSBs and their end-of-life recycling.
To develop a method for efficient recovery and reuse of cathode materials from SSBs.

Main Methods:

Development of supramolecular organo-ionic (ORION) electrolytes with tunable viscoelastic properties.
Fabrication and testing of SSBs using ORION electrolytes, lithium metal anodes, and LFP/NMC cathodes.
Implementation of a low-temperature solvent process for cathode isolation and cell refurbishment.

Main Results:

ORION electrolytes exhibit viscoelastic solid behavior at operating temperatures (-40°C to 45°C) and viscoelastic liquid behavior above 100°C.
SSBs with ORION electrolytes demonstrated stable cycling for hundreds of cycles at 45°C with <20% capacity fade.
Refurbished cells using recycled cathodes recovered 90% of initial capacity and retained 84% after 100 cycles in their second life.

Conclusions:

ORION electrolytes offer a viable solution for creating recyclable solid-state batteries.
The developed recycling process significantly enhances the sustainability and economic feasibility of SSB technology.
This approach paves the way for a circular economy in advanced battery manufacturing.