Journal article
Recovery and Reuse of Composite Cathode Binder in Lithium Ion Batteries
ChemistryOpen (Weinheim), v 10(5), pp 545-552
May 2021
PMID: 33945235
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Here, we investigate the recovery and reuse of polyvinylidene fluoride (PVDF) binders from both homemade and commercial cathode films in Li ion batteries. We find that PVDF solubility depends on whether the polymer is an isolated powder or cast into a composite film. A mixture of tetrahydrofuran:N‐methyl‐2‐pyrrolidone (THF : NMP, 50 : 50 v/v) at 90 °C delaminates composite cathodes from Al current collectors and yields pure PVDF as characterized by
1
H nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), wide‐angle X‐ray scattering (WAXS), and scanning electron microscopy (SEM). PVDF recovered from Li ion cells post‐cycling exhibits similar performance to pristine PVDF. These data suggest that PVDF can be extracted and reused during Li ion battery recycling while simultaneously eliminating the formation of HF etchants, providing an incentive for use in direct cathode recycling.
The structure, purity, and reuse
of polyvinylidene fluoride binder recovered from spent lithium‐ion battery cathodes have been investigated.
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Details
- Title
- Recovery and Reuse of Composite Cathode Binder in Lithium Ion Batteries
- Creators
- Amrita Sarkar - Columbia UniversityRichard May - Columbia UniversitySapna Ramesh - Columbia UniversityWesley Chang - Princeton UniversityLauren E. Marbella - Columbia University
- Publication Details
- ChemistryOpen (Weinheim), v 10(5), pp 545-552
- Publisher
- John Wiley and Sons Inc
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000664241800005
- Scopus ID
- 2-s2.0-85105335173
- Other Identifier
- 991021889993204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary