Optimization of Binder Systems for NCM/Graphite Lithium-ion Batteries: Electrochemical performance and Swelling behavior

Key Points

• The aim is to optimize binder systems in lithium-ion batteries for improved electrochemical performance and reduced swelling behavior.
• Compared electrochemical performance of organic binder (PVDF) and aqueous binders (SBR/CMC) in NCM/Graphite batteries.
• Fabricated 700 mAh pouch cells for performance evaluation.
• Conducted tests at high temperature (90°C) to assess gas generation and swelling behavior.
• Aqueous binders showed increased gas generation and swelling when used with natural graphite at high temperatures compared to organic binders.
• Significant swelling was observed which affects battery stability and performance.