Thermoelectric properties of TiS2 mechanically alloyed compounds

Tailoring the thermoelectric and structural properties of Cu–Sn based thiospinel compounds [CuM1+xSn1−xS4 (M = Ti, V, Cr, Co)]

“…81 The large mass difference between Sn and Co can induce a mass fluctuation effect, which suppresses the thermal transport, as reported in several sulfidebased materials such as TiS2. 46,47 The beneficial effects of lower κ has however been negated by the poor PF, thus resulting in a mediocre figure of merit, zT (Figure 5e). Nevertheless, the zTmax value of ~0.02 at 673 K for this CuCo0.5Sn1.5S4 compound is still slightly higher than that of some similar n-type thiospinel compounds that were reported earlier, such as c-CuTi2S4 and CuCrTiS4.…”

“…In most of these cases, modifications of the structural and magnetic properties via processing conditions and electronic band structure engineering are expected to allow for modifications of the transport properties, thus providing avenues for tuning or tailoring of the thermeoelectric properties. 29,31,41,35,[42][43][44][45] In addition, the Sn-based thiospinel compounds can possess intrinsically lower thermal conductivity due to the large molar mass of Sn, which might enable the promotion of the mass fluctuation effect, 46,47 which we hope to exploit to tune their thermal transport properties. Besides the thermoelectric aspects, this work also sheds some light on the crystallography, magnetic properties together with thermoelectric correlations, electronic band structures and density of states of these CuM1+xSn1-xS4 (M = Ti, V, Cr, Co) thiospinel compounds.…”

Two-dimensional transition metal dichalcogenide-based counter electrodes for dye-sensitized solar cells

“…Titanium Disulfide (TiS 2 ) is a metallic thermoelectric material which attains unique morphologies such as nanotubes, nanoclusters and nanodisks, and exhibits interesting physical properties. [187][188][189][190][191][192][193][194][195][196][197][198] Meng et al 199 has prepared 2D TiS 2 nanosheets decorated on graphene using a ball milling method and followed by high-temperature annealing. photoanode for a DSSC was prepared by immersing it in N719 dye solution for 24 hours at room temperature.…”

Improved thermoelectric properties of layered Ti1−xNbxS2−ySey solid solutions

“…Layered crystal structure are characteristic for TMDs compounds: metal and chalcogen atoms are bonded by covalent M–X bonds within the layers, and the neighboring layers have weaker van der Waals interaction between chalcogen atoms (X…X) 11−14 . According to experimental data 7,15−19 and some theoretical calculations, 20 some layered TMDs are the perspective candidates for TEG. We focused on titanium dichalcogenides, such as TiS 2 and TiSe 2 .…”