AkuPureTM CMC in lithium-ion batteries

AkuPureTM CMCs are specifically suited for aqueous binder systems in lithium-ion battery anodes which are used typically in combination with graphite and Styrene Butadiene Rubber (SBR) in anode coating to improve binding strength of active graphite on the copper collector. SBR alone cannot generate sufficient coating rheology and slurry stability for graphite powder. Therefore, applying AkuPureTM CMCs will provide excellent dispersion of graphite particles and homogenous distribution of the binder. Secondary Lithium-ion battery made using our CMC show high capacity retention in general, but also at high C-rates.

The AkuPureTM CMC optimizes the performance of aqueous binder systems in lithium-ion batteries:

  • Excellent adhesion, typically in combination with Styrene Butadiene Rubber (SBR), providing high coating quality
  • Low levels of insolubles:
    - Prevents filter clogging for an efficient production process
    - Ensures a defect-free coating for optimal performance of lithium-ion battery electrodes
  • Ultra high purity (>99.5) with best-in-class low levels of trace metals
  • Easily dispersible free-flowing powders to facilitate easy slurry manufacturing
  • Superb slurry stability and dispersion of graphite
  • Excellent battery properties, such as high temperature storage stability and capacity retention (tested on 18650 NMC-type lithium-ion battery)

  AkuPure 2791 AkuPure 2795 AkuPure 2885
DS specification 0.85-1.0 0.85-1.0 0.70-0.95
Viscosity
Specification*
1000-2000 1500-3000 1500-3500
Particle size Fine (0.1 mm) Standard (0.5 mm) Standard (0.5 mm)
Dissolution properties Fast dissolving, with high shear mixer  Free flowing powder, easy to disperse and dissolve Free flowing powder, easy to disperse and dissolve
Insolubles Best-in-class level of insolubles Best-in-class level of insolubles Best-in-class level of insolubles
Battery performance Best-in-class performance Best-in-class performance Best-in-class performance

*Viscosity measured at 25°C, Brookfield LVT


Manufactured in state-of-the-art factory

AkuPure is manufactured in a world class, safe, and reliable factory in The Netherlands, Europe.

  • State of the art purification process
  • Producing CMC (Carboxymethyl Cellulose) since 1948
  • Excellent track record in safety and reliability
  • In-house laboratory and Quality Control
  • Dedicated R&D and Application support team
  • Own pilot plant facilities
  • Blending and milling facilities
  • Operating 24/7

 

Download our new AkuPure leaflet

 

What is a lithium-ion battery?