What is a lithium-ion battery?

The growing trend in shifting the utilization of fossil fuel recourses to renewable energy resource drives the development of efficient energy conversion and effective energy storage. Storage materials and devices are therefore highly demanded than ever.

Among the diverse energy storage devices, a lithium-ion battery (LIB), also known as Li-ion batteries, is a family of rechargeable battery types in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging.* LIBs are commonly used in portable electronics such as in PDAs, cell phones, laptops; and also used for electric vehicles and several other applications.

The 2019 Nobel prize in chemistry is rewarded to the development of the lithium-ion battery.
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*source: Functional Nanofibers and their Applications, 2012, (https://www.sciencedirect.com/topics/chemistry/lithium-ion-battery)

AkuPureTM CMC in lithium-ion battery

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.


The AkuPure
TM CMC optimize the performance of aqueous binder system in lithium-ion battery:

  • 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 proces´
    • 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

 

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AkuPure CMC for aqueous binder systems in lithium-ion battery.