Boron nitride (BN) nanotube as a hydrogen storage material and method for producing the same

摘要

PPROBLEM TO BE SOLVED: To provide a new lightweight nanotube in which influence on hydrogen storage properties owing to form, the remaining of catalyst metal or the like hardly occurs, and which stably stores hydrogen, and, in which influence on the human body is not recognized as well. PSOLUTION: The nanotube is a multi-wall boron nitride nanotube having a hydrogen storage content of 1.5 wt.% under 10 MPa at room temperature, and having a diameter of 5 to 50 nm and a length of 1 to 20 m. Alternatively, the nanotube is a bamboo boron nitride nanotube in which nanobell type nanotubes having a hydrogen storage content of 2.5 wt.% under 10 MPa at a room temperature, and having a diameter of 10 to 100 nm and a length of 50 to 300 nm are connected so as to be a length of 5 to 20 m. PCOPYRIGHT: (C)2004,JPO&NCIPI