Carbon nanotube and secondary battery
Assigneesartience Co., Ltd., Toyocolor Co., Ltd.
InventorsYu Morita, Tomoaki Masuoka
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Abstract
A carbon nanotube dispersion including a carbon nanotube, a solvent, and a dispersant. A highly conductive electrode membrane can be produced as a result of the carbon nanotube using a carbon nanotube dispersion satisfying (1), (2), and (3). (1) An average outer diameter is more than 3 nm and less than 10 nm. (2) A peak is present in a powder X-ray diffraction analysis at a diffraction angle of 2θ=25°±2°, and a half value width of the peak is 3° to 6°. (3) When a maximum peak intensity within the range of 1,560 to 1,600 cm−1 in a Raman spectrum is G and a maximum peak intensity within the range of 1,310 to 1,350 cm−1 is D, a G/D ratio is 0.5 to 4.5.
Claims5
A carbon nanotube, satisfying the following (1), (2), and (3):
- (1) an average outer diameter of the carbon nanotube is more than 3 nm and less than 10 nm,
- (2) a peak appears at a diffraction angle 2θ=25°±2° in powder X-ray diffraction analysis, and a half value width of the peak is 3° to 6°, and
- (3) a G/D ratio is 1.0 to 4.5, where G represents a maximum peak intensity in a range of 1,560 to 1,600 cm−1, and D represents a maximum peak intensity in a range of 1,310 to 1,350 cm−1 in a Raman spectrum of the carbon nanotube.
Dependencies are inferred from the claim text.