Superconductivity in NaH intercalated C60

Three Components Organic Superconductors: Intercalation of KH into C60

“…The 373 K band in (KH) C can be assigned to the adsorbed H molecules on the surface, since it is located at the similar temperature to the 402 K band of H V KC . The 725 and 1024 K bands due to the dissociated hydrogen (hydride ions) are shifted to the high temperature side by &80 and &150 K, respectively, compared with 644 and &875 K for -(NaH) C (5). This means that hydride ions in (KH) C are more strongly bounded in the C lattice than those in -(NaH) C .…”

“…The crystal structure of the Na-H-C superconductor was solved by Rietveld analysis, in which Na> ions in the octahedral (O) and tetrahedral (T) sites are o!-centered, suggesting the intercalation of hydrogen (7). The thermal desorption and theoretical calculation showed that hydrogen exists as a hydride ion with a fractional charge (5,8). As another feature in the Na-H-C system, a nonsuperconductor ( -phase) as well as a superconductor ( -phase) was obtained as the main product (9).…”

Rare gas storage and chemical reaction using nanospace in C 60 lattice

“…C 60 -sodium-hydrogen compound was prepared by direct reaction of C 60 and sodium hydride (NaH) [4]. C 60 -Na-H powders were exposed to 0.1 atm CO or N 2 gas at 473 K for three days.…”

“…Figure 1(a) shows the mass spectrum at 650 K of the desorbed gases from the sample of C 60 -Na-H exposed to CO. The species corresponding to Figure 1(b) shows the TD spectrum of CH 3 (m /e 15) as a fragment of CH 4 . The peak temperature (T P ) of desorption is observed around 720 K. The desorption at high temperature suggests that the hydrogenation reaction of CO to CH 4 occurs not on the surface but in the octahedral nanospace including hydrogen in the C 60 lattice, because for the surface reaction, T P should be low due to the desorption of physically adsorbed CH 4 .…”

Room Temperature Storage of Hydrogen by Carbons

“…We have reported the chemical interactions of hydrogen in the solids C 60 , Na-C 60 -H ternary systems (super-conducting (SC) and non-super-conducting non-SC Phases) and carbon nanotube [1][2][3][4][5][6][7], as shown in Figure 1.…”