High Performance Battery Materials

Cathodes, Anodes, and Electrolytes

Silicon & Silicon-Graphite Tapes

Anode Electrode Sheets

Silicon (Si) has attracted great attention due to its remarkably high theoretical specific capacity of ~4200 mAh/g, and as a result, silicon is increasingly being used in high energy density lithium-ion batteries. In most cases, a small amount of silicon is mixed with graphite. Si-Graphite composite materials offer the advantage of improving the cycling stability of silicon, which is attributed to the surrounding carbon-based matrix and improved electrical conductivity network. NANOMYTE BE-150E is composite electrode containing 20% silicon and 65% graphite by weight. BE-150E shows a nominal capacity of 750 mAh/g at 0.05C for an electrode loading of 4 mAh/cm2.

In some cases, there is additional benefit in increasing the silicon content in the anode. NEI’s NANOMYTE BE-150E Plus has a silicon content of 50% by weight, because of which the nominal capacity is 1,500 mAh/g at 0.05C (electrode loading is 4 mAh/cm2).

The standard silicon tape is cast single-sided on 5 inch x 10 inch sheets of copper foil. Our tapes can be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as the type of a current collector.

Electrode Sheets Brochure

NANOMYTE® BE-150E Spec Summary:

  • Silicon-graphite composite (single-sided)
  • Active Material Loading: 20% Silicon + 65% Graphite
  • Current Collector: Copper (10 µm thick)
  • Sheet Size: 5 in x 10 in (127 mm x 254 mm)
  • Active Material Loading (Silicon): 1.25 mg /cm2
  • Standard Areal Capacity: 4 mAh/cm2 ± 5%
  • Average Voltage vs. Li/Li+: ~ 0.1V
  • Nominal Capacity at 0.05C: ≥ 750 mAh/g

NANOMYTE® BE-150E Plus Spec Summary:

  • Silicon (single-sided)
  • Active Material Loading: 50% Silicon
  • Current Collector: Copper (10 µm thick)
  • Sheet Size: 5 in x 10 in (127 mm x 254 mm)
  • Active Material Loading (Silicon): 2.7 mg /cm2
  • Standard Areal Capacity: 4 mAh/cm2 ± 5%
  • Average Voltage vs. Li/Li+: ~ 0.1V
  • Nominal Capacity at 0.05C: 1,500 mAh/g ± 5%

Available for Purchase

NEI’s standard* electrode sheets are available in ready-to-ship packages of 2, 5, and 10 sheets (per material). Request a quote today!

*Standard electrode sheets are cast single-sided on 5 inch x 10 inch sheets of aluminum (cathode) or copper foil (anode). Modifications in tape specifications (such as loading, thickness, binder, & collector) can be made for an additional fee.