Polymeric Binder Design for Sustainable Lithium-Ion Battery Chemistry

Abstract

The design of binders plays a pivotal role in achieving enduring high power in lithium-ion batteries (LIBs) and extending their overall lifespan. This review underscores the indispensable characteristics that a binder must possess when utilized in LIBs, considering factors such as electrochemical, thermal, and dispersion stability, compatibility with electrolytes, solubility in solvents, mechanical properties, and conductivity. In the case of anode materials, binders with robust mechanical properties and elasticity are imperative to uphold electrode integrity, particularly in materials subjected to substantial volume changes. For cathode materials, the selection of a binder hinges on the crystal structure of the cathode material. Other vital considerations in binder design encompass cost effectiveness, adhesion, processability, and environmental friendliness. Incorporating low-cost, eco-friendly, and biodegradable polymers can significantly contribute to sustainable battery development. This review serves as an invaluable resource for comprehending the prerequisites of binder design in high-performance LIBs and offers insights into binder selection for diverse electrode materials. The findings and principles articulated in this review can be extrapolated to other advanced battery systems, charting a course for developing next-generation batteries characterized by enhanced performance and sustainability.

Polyacrylonitrile-co-(Polyethylene Glycol-Maleic Acid Ester) (PAM): A Multifunctional Binder for High-Performance Lithium-Ion Batteries

“…Additionally, PVDF’s limited ability to disperse conductive additives often results in their aggregation within the electrode matrix, failing to establish a continuous internal pathway that connects all regions of the electrode. This aggregation can impede effective electron transport within the electrode and to the current collector, compromising the rate capability and long-term cycle performance of LIBs. − …”

Unlocking sustainable power: advances in aqueous processing and water-soluble binders for NMC cathodes in high-voltage Li-ion batteries

“…Consequently, this pH elevation contributes to the corrosion of the aluminium current collector. 23–25 In recent times, significant attention has been directed towards NMC materials, driven by their notable attributes of high specific capacity and average discharge voltage, which makes them very attractive for its use in electric vehicles. In this review, we have presented a thorough overview of the cutting-edge advancements in waterborne polymeric binders for the aqueous processing of high-voltage cathodes.…”