Intercalation of copper into some layered and tunnel chalcogenides by mechanical alloying

Cu atoms were intercalated into the layered chalcogenides 2Ha-Nb1.05Se2 and 1T-TiS2 by milling mixtures of Cu and chalcogenides in a planetary ball mill. The intercalation compounds 2Ha-CuxNb1.05Se2 (0 < x ≤ 0.4), 2Hb-Cu1.0Nb1.05Se2, and 1T-CuxTiS2 (0 < x ≤ 0.5) were obtained by milling for 30–80 min. Among them, 1T-CuxTiS2 (0.3 ≤ x ≤ 0.5) is a metastable phase compound. Cu atoms were intercalated into the tunnels in Nb3Te4 by milling mixtures of Cu and Nb3Te4 for 60 min. CuxNb3Te4 was obtained in the range of 0 ≤ x ≤ 1.0.