Pseudo-materials are effective in boosting the specific capacitance of supercapacitors, but during service their degradation may also be very strong, causing reduced cycling stability. Here, we show that a carbon nanotube sponge grafted by two conventional pseudo-polymer layers in sequence can serve as a porous supercapacitor electrode with significantly enhanced cycling stability compared with...

One-dimensional (1D) van der Waals heterostructures based on carbon nanotube templates are raising a lot of excitement due to the possibility creating new optical and electronic properties, by either confining molecules inside their hollow core or adding layers outside nanotube. In contrast 2D analogues, where number layers, atomic type relative orientation constituting main parameters defining...

By employing the theoretical method based on tight-binding, we study electronic band structure of single-wall carbon nanotube (CNT) superlattices, which the system is the made of the junction between the zigzag and armchair carbon nanotubes. Exactly at the place of connection, it is appeared the pentagon–heptagon pairs as topological defect in carbon hexagonal network. The calculations are base...

Imogolite nanotubes (INTs) display a range of useful properties and provide an ideal material system to study the assembly nanomaterials into macroscopic fibers. A method wet spinning pure, binder-free imogolite fibers has been developed using double-walled germanium nanotubes. The nanotube aspect ratio can be controlled during initial synthesis is critical process. Fibers made from short (<100...

The generation process of a double-walled carbon nanotube (DWNT) from a “peapod” was studied by classical molecular dynamics simulation. Starting from a peapod structure, defined by five C60 molecules inside a (10,10) single-walled carbon nanotube (SWNT), polymerized fullerenes, a peanut-like structure and an almost nanotube-like structure were obtained under suitable conditions of temperature ...

Zero bias conductance per spin of nanotube double junction (NTDJ) is investigated theoretically using the tight binding model, unrestricted Hartree-Fock approximation and non-equilibrium Green’s functions. NTDJ consists of two metallic nanotubes joined by a piece of semiconducting nanotube, with the transition between the nanotubes made up of sets of 5 and 7 member carbon rings. A quantum well ...

We studied the spectral diffusion and exciton fine structures of single-walled carbon nanotubes (SWNTs) using single carbon nanotube spectroscopy. Two types of single nanotube photoluminescence (PL) spectra were observed at temperatures below 50 K, double peaks with spectral diffusion and a single peak without spectral diffusion. The spectral diffusion occurring in the lower energy peak of the ...