Poly(Acrylic Acid)-Based Polymer Binders for High-Performance Lithium-Ion Batteries: From Structure to Properties

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Poly(acrylic acid) (PAA) and its derivatives are explored as advanced binder materials for lithium-ion batteries (LIBs).
• Effective binders are crucial for improving electrode integrity, silicon particle adhesion, and ion transport in LIBs.
• Current research investigates PAA-based binders to overcome limitations in existing battery technologies.

Purpose of the Study:

• To evaluate the potential of poly(acrylic acid)-based binders in enhancing the electrochemical performance of lithium-ion batteries.
• To examine the structural and physicochemical properties of PAA derivatives as binder materials.
• To understand the interaction mechanisms between PAA binders and active materials for improved battery function.

Main Methods:

• Investigated various modification strategies, including mixing modifications and copolymerization, for PAA-based binders.
• Analyzed the structural and physicochemical properties of the developed PAA binder materials.
• Examined the electrochemical performance of LIBs utilizing PAA binders, focusing on adhesion, ion transport, and electrode integrity.

Main Results:

• PAA-based binders demonstrate enhanced adhesion with silicon particles, crucial for battery stability.
• Improved ion transport and maintained electrode integrity were observed with PAA binder utilization.
• Significant improvements in initial Coulombic efficiency (ICE) and cycle stability were achieved using tailored PAA binders.

Conclusions:

• Tailored poly(acrylic acid)-based binders effectively enhance the electrochemical properties of lithium-ion batteries.
• These binders offer promising solutions for developing high-performance lithium batteries.
• The findings provide insights into designing advanced battery materials for future energy storage demands.