Batteries are at the heart of revolutionary innovations in smart mobile devices, pollution free electric cars, intelligent power management solutions, and mass energy storage systems to compliment wind and solar power. 

Whether you are associated with battery research or battery development; aiming to achieve the highest battery performance, our analytical solutions can help you get there faster and easier. This applies to Li-ion batteries as well as new emerging battery technologies like Na-ion, Li-sulphur, Zn-air etc. including graphene-based modifications. This also covers graphene supercapacitors which compliment batteries in applications needing high power over short duration. 

Scroll below to understand how you can optimize your electrode materials to achieve the best battery performance.  

How do I ensure the quality of my electrode materials?

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Particle size: Particle size plays an important role in battery performance. Usually the tolerance on particle size variation if consistent battery performance is to be maintained. Based on the principles of laser diffraction, Mastersizer 3000 offers the easiest and most accurate way of measuring battery cathode and anode material particle sizes. In an industrial process environment, this can be replaced by an Insitec on-line particle size analyser to provide real time data for process control. 

Particle shape: Particle shape in battery electrode materials holds the key to unlock full potential of a given battery material to be translated into the best performing battery. Particle shape affects slurry rheology as well as the electrode coating in terms of packing density, porosity and uniformity. To achieve the highest level of battery performance, manufacturers must understand and optimize the particle morphology. Morphologi 4 can analyze the size and shape of statistically relevant ensemble of particles in just a few minutes to empower you with critical information you need to optimize the battery slurry. 

Crystalline Phase: Crystalline phase defines the structure of materials at atomic scale – the scale at which ionic or electronic transport happens or is hindered. Crystalline phase composition defines the overall electrode material quality and its suitability for the battery cell manufacturing. X-ray diffraction is the technique of choice when it comes to the analysis of crystalline phases. 

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Aeris compact X-ray diffractometer, an easy to use instrument with superb data quality, can be used for accurate analysis of:

  • Crystalline phase composition and presence of any residual reactants (optimization of calcination process)
  • Crystallite size (related to the primary particle size)
  • Degree of graphitization in synthetic anode graphite

   
Chemical composition and impurities: X-ray fluorescence is an alternative technique to ICP to analyze chemical composition and impurities from few ppm up to 100% levels. For major elements at few % levels, XRF provides a simpler and more accurate way of measuring elemental composition than ICP as it does not require any sample dilution or acid digestion. Many leading battery companies use our benchtop E4 XRF or Zetium WDXRF to analyse cathode and pre-cursor materials. 

How do I optimize electrode slurry and ensure its stability?

Battery slurry has many components (electrode, carbon / graphene, polymer binder and solvent) and their interconnected structure plays an important role in the quality of electrode coating. While particle size and shape influence the packing density and porosity as discussed above, another important factor to consider is zeta potential.

Zeta Potential: Zeta potential of electrode particles in the dispersant (slurry) governs if the particles are prone to aggregate. Particles with high zeta potential will repel and form a stable dispersion whereas low zeta potential will allow particle aggregation. Any particles aggregation will lead of non-uniformity in electrode coating resulting in the loss of battery performance. Likewise, zeta-potential also influence the wettability of the metal surface. Our Zetasizer can help you optimize the zeta-potential and improve the quality of electrode coating.

How do I enhance battery performance with Graphene?

Graphene is known to enhance the performance of both the cathode and anode materials by providing a framework of electronic conduction network. In the modification of cathode material with graphene, the Zeta potential plays an important role in defining the interaction between graphene and Li cathode particles. Zetasizer can decode the zeta potential of both graphene and cathode particles and help you optimize the Ph value suitable for favourable interaction.

Working on super/ultra-capacitors?


Graphene/activated carbon based super capacitors complement the batteries in applications needing high power for short times. Materially, supercapacitors are very similar to batteries, and particle size, morphology, phase/interlayers, rheology and phase changes associated with charge-discharge play equally important role. Our novel solutions discussed above can be used to analyse and improve the performance of super-capacitors as well.

Our solutions

Expert solutions in batteries and supercapacitors. Contact us to discuss your challenges.
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