Innovative Biobased Thermoplastic Binders for Sustainable Lithium-Ion Batteries

Area of Science:

• Materials Science
• Electrochemistry
• Sustainable Energy

Background:

• Growing global demand for batteries necessitates sustainable materials for energy storage.
• Poly-(vinylidene fluoride) (PVDF) is a common binder in lithium-ion batteries (LIBs), but its environmental impact is a concern.
• Developing biobased polymer binders is crucial for enhancing LIB sustainability.

Purpose of the Study:

• To explore novel biobased polymers as sustainable alternatives to PVDF in LIBs.
• To synthesize and evaluate biobased polymers derived from isosorbide and poly-(ethylene glycol) (PEG) as binders for LFP cathodes.
• To assess the mechanical and electrochemical performance of these biobased binders.

Main Methods:

• Synthesis of biobased polymers from isosorbide and PEG.
• Fabrication of LFP cathodes using the novel biobased binder (ISB-25PEG).
• Evaluation of binder adhesion, cohesion, and electrochemical performance in LIBs.

Main Results:

• The developed ISB-25PEG binder demonstrated superior adhesion and cohesion properties.
• Cathodes utilizing the ISB-25PEG binder exhibited battery performance comparable to those with traditional PVDF binders.
• The biobased binder proved to be a viable alternative to PVDF for LFP cathodes.

Conclusions:

• ISB-25PEG shows significant potential as a sustainable and high-performance binder for next-generation energy storage devices.
• This research marks a key advancement in developing environmentally friendly battery technologies.
• The findings support the transition towards greener materials in the battery industry.