Methode for making cabron nanotube slurry

A method for making carbon nanotube slurry, the method comprises the steps of:

• step (10), providing a carbon nanotube array on a substrate, the carbon nanotube array comprising a plurality of carbon nanotubes parallel to each other and perpendicular to a surface of the substrate;
• step (20), trimming the carbon nanotube array by a laser to obtain a trimmed carbon nanotube array comprising a plurality of trimmed carbon nanotubes having substantially uniform lengths, wherein the laser irradiates the carbon nanotube array along a direction parallel to an axial direction of the carbon nanotubes;
• step (30), removing the trimmed carbon nanotube array from the substrate to obtain the trimmed carbon nanotubes having the substantially uniform lengths;
• and
• step (40), mixing the trimmed carbon nanotubes with an inorganic binder and an organic carrier to obtain a carbon nanotube slurry.