Back to results
US 10,703,632 B2Granted
Method of purifying carbon nanotubes
AssigneeSK Innovation Co., Ltd.
InventorsYeon Hwa La, Ji Min Kim, Min Ji Sung, Woong Chul Shin
Life of this patent
Estimating the term…
Abstract
Disclosed is a method of purifying carbon nanotubes, including treating carbon nanotubes with an inert gas at a high temperature in a low vacuum in a reactor and obtaining ultrapure carbon nanotubes, wherein the ultrapure carbon nanotubes contain 50 ppm or less of each metal remaining therein.
Claims7
A method of purifying carbon nanotubes, comprising:
- (1) treating carbon nanotubes with an inert gas at a treatment temperature of 1800° C. or less in a low vacuum at a reaction pressure of 0.1 Torr or more in a reactor;
- and
- (2) obtaining ultrapure carbon nanotubes,
- wherein the ultrapure carbon nanotubes contain 50 ppm or less of each metal remaining therein.
1 more element
Dependencies are inferred from the claim text.