Acetone as an agent for PVDF recovery and delamination of lithium-ion battery electrodes

Guozhan Jiang; David Lee; David Raimbault; Paul A. Anderson; Gary A. Leeke

doi:10.1016/j.resconrec.2024.107778

Acetone as an agent for PVDF recovery and delamination of lithium-ion battery electrodes

Guozhan Jiang^*, David Lee, David Raimbault, Paul A. Anderson, Gary A. Leeke

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Downloads (Pure)

Abstract

An acetone-based process to recover polyvinylidene fluoride (PVDF) from Li-ion battery electrodes has been developed. The PVDF binder was first dissolved away using acetone and the electrode material was subsequently subject to stirring in acetone for delamination from the current collector. The electrode became separated into electrode materials, PVDF binder, and current collector. The solubility of PVDF in acetone was measured as a function of temperature and was found to increase with temperature, reaching a maximum value at around 150 °C. The dissolution rate of PVDF both in its pure state and in electrodes was measured against temperature. The former was much faster than the latter. The diffusion of PVDF out of the electrodes was modelled mathematically for predicting the time for material recovery. The research demonstrates the potential of establishing a direct recycling process by enabling the recovery of PVDF, electrode materials and current collectors from Li-ion batteries.

Original language	English
Article number	107778
Journal	Resources, Conservation and Recycling
Volume	209
Early online date	17 Jun 2024
DOIs	https://doi.org/10.1016/j.resconrec.2024.107778
Publication status	Published - 1 Oct 2024

Bibliographical note

Acknowledgements
This work was supported by the Faraday Institution ReLiB project. The author would like to thank Dr Rob Sommerville and Anton Zorin for dismantling the pouch cells used in this study.

Keywords

Lithium-ion battery
Recycling
PVDF
Acetone

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.resconrec.2024.107778Licence: Creative Commons: Attribution (CC BY)

JiangG2024AcetoneFinal published version, 3.34 MBLicence: Creative Commons: Attribution (CC BY)

https://linkinghub.elsevier.com/retrieve/pii/S0921344924003720

Cite this

@article{dd753a6a31e0437889e9a26718527dbe,

title = "Acetone as an agent for PVDF recovery and delamination of lithium-ion battery electrodes",

abstract = "An acetone-based process to recover polyvinylidene fluoride (PVDF) from Li-ion battery electrodes has been developed. The PVDF binder was first dissolved away using acetone and the electrode material was subsequently subject to stirring in acetone for delamination from the current collector. The electrode became separated into electrode materials, PVDF binder, and current collector. The solubility of PVDF in acetone was measured as a function of temperature and was found to increase with temperature, reaching a maximum value at around 150 °C. The dissolution rate of PVDF both in its pure state and in electrodes was measured against temperature. The former was much faster than the latter. The diffusion of PVDF out of the electrodes was modelled mathematically for predicting the time for material recovery. The research demonstrates the potential of establishing a direct recycling process by enabling the recovery of PVDF, electrode materials and current collectors from Li-ion batteries.",

keywords = "Lithium-ion battery, Recycling, PVDF, Acetone",

author = "Guozhan Jiang and David Lee and David Raimbault and Anderson, {Paul A.} and Leeke, {Gary A.}",

note = "Acknowledgements This work was supported by the Faraday Institution ReLiB project. The author would like to thank Dr Rob Sommerville and Anton Zorin for dismantling the pouch cells used in this study.",

year = "2024",

month = oct,

day = "1",

doi = "10.1016/j.resconrec.2024.107778",

language = "English",

volume = "209",

journal = "Resources, Conservation and Recycling",

issn = "0921-3449",

publisher = "Elsevier",

}

TY - JOUR

T1 - Acetone as an agent for PVDF recovery and delamination of lithium-ion battery electrodes

AU - Jiang, Guozhan

AU - Lee, David

AU - Raimbault, David

AU - Anderson, Paul A.

AU - Leeke, Gary A.

N1 - Acknowledgements This work was supported by the Faraday Institution ReLiB project. The author would like to thank Dr Rob Sommerville and Anton Zorin for dismantling the pouch cells used in this study.

PY - 2024/10/1

Y1 - 2024/10/1

N2 - An acetone-based process to recover polyvinylidene fluoride (PVDF) from Li-ion battery electrodes has been developed. The PVDF binder was first dissolved away using acetone and the electrode material was subsequently subject to stirring in acetone for delamination from the current collector. The electrode became separated into electrode materials, PVDF binder, and current collector. The solubility of PVDF in acetone was measured as a function of temperature and was found to increase with temperature, reaching a maximum value at around 150 °C. The dissolution rate of PVDF both in its pure state and in electrodes was measured against temperature. The former was much faster than the latter. The diffusion of PVDF out of the electrodes was modelled mathematically for predicting the time for material recovery. The research demonstrates the potential of establishing a direct recycling process by enabling the recovery of PVDF, electrode materials and current collectors from Li-ion batteries.

AB - An acetone-based process to recover polyvinylidene fluoride (PVDF) from Li-ion battery electrodes has been developed. The PVDF binder was first dissolved away using acetone and the electrode material was subsequently subject to stirring in acetone for delamination from the current collector. The electrode became separated into electrode materials, PVDF binder, and current collector. The solubility of PVDF in acetone was measured as a function of temperature and was found to increase with temperature, reaching a maximum value at around 150 °C. The dissolution rate of PVDF both in its pure state and in electrodes was measured against temperature. The former was much faster than the latter. The diffusion of PVDF out of the electrodes was modelled mathematically for predicting the time for material recovery. The research demonstrates the potential of establishing a direct recycling process by enabling the recovery of PVDF, electrode materials and current collectors from Li-ion batteries.

KW - Lithium-ion battery

KW - Recycling

KW - PVDF

KW - Acetone

U2 - 10.1016/j.resconrec.2024.107778

DO - 10.1016/j.resconrec.2024.107778

M3 - Article

SN - 0921-3449

VL - 209

JO - Resources, Conservation and Recycling

JF - Resources, Conservation and Recycling

M1 - 107778

ER -

Acetone as an agent for PVDF recovery and delamination of lithium-ion battery electrodes

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

Fingerprint

Cite this