Advanced Energy Storage Materials
Advanced Energy Storage Materials
Binder-free Cathode Enabling High Capacity Li-ion Battery
Li-ion batteries have polymeric binder in their electrodes resulting in high internal resistance and hence long charge times and short product lifetime. Binder-free Ni-Mn-Co (NMC) cathodes containing carbon nanotubes (CNT) provide a solution to extend the product lifetime as well as providing increased capacity and rate capability. Our proprietary processing of CNT into viscous organic or water-based slurry without a surfactant or dispersant reduces or eliminates the need for organic binder and carbon black additives in conventional cathodes. Our batteries show superior performance over binder-containing cells.
Compared to LiB cells with binder-containing NMC cathodes, cells with binder free NMC-CNT cathodes provide:
- 31% lower cell resistance
- 6% vs. 12% capacity fade after 500 cycles
- 2x improvement in cell capacity at high 10C discharge rate
- 5% higher capacity
- Scalable R2R coating of NMC/CNT cathodes without binder & carbon black additives
Binder-free Cathode Enabling High Capacity Li-ion Battery
Li-ion batteries have polymeric binder in their electrodes resulting in high internal resistance and hence long charge times and short product lifetime. Binder-free Ni-Mn-Co (NMC) cathodes containing carbon nanotubes (CNT) provide a solution to extend the product lifetime as well as providing increased capacity and rate capability. Our proprietary processing of CNT into viscous organic or water-based slurry without a surfactant or dispersant reduces or eliminates the need for organic binder and carbon black additives in conventional cathodes. Our batteries show superior performance over binder-containing cells.
Compared to LiB cells with binder-containing NMC cathodes, cells with binder free NMC-CNT cathodes provide:
- 31% lower cell resistance
- 6% vs. 12% capacity fade after 500 cycles
- 2x improvement in cell capacity at high 10C discharge rate
- 5% higher capacity
- Scalable R2R coating of NMC/CNT cathodes without binder & carbon black additives