BNNT SP10 Technical Data

BNNT, LLC tubes are synthesized using the high temperature/high pressure (HTP) method, also called the pressurized vapor/condenser (PVC) method. This method produces highly flexible, large aspect ratio BNNTs with high crystallinity. Key specifications of our material are summarized in the table below.

h-BN content >99% (refined materials)
Residual Impurities Refined materials contain <1 wt.% elemental boron
Tap Density Low, ~0.25 mg/cm3
Defect density Extremely low (BNNTs flex and recover when bent)
Band gap 5.7 eV (direct measurement by low energy EELS)
Surface area up to 400 m2/g (by multipoint BET)
Network many isolated tubes, bundles up to 5 tubes (by TEM)
Number of walls 1 to 5 walls are typical, 2 or 3 walls are most common (by TEM)
BNNT length up to 200 μm (by SEM), longer suspected

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Below are photos of our current puffball, powder, and mat products. (back, left to right) SP10 puffball, SP10-R puffball, SP10-R-P powder, and (front) SP10-R-M mat. The as-grown puffball material has a cotton-like appearance with a very low tap density as shown in the photo below.


Read the full "Boron Nitride Nanotube: Synthesis and Applications" paper.

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