*typical representative size, areas/dimensions may vary
||Titanium sulfide, Bis(sulfanylidene)titanium
|Classification / Family
Transition metal dichalcogenides (TMDCs), Nano-electronics, Nano-photonics, Photovoltaic, Materials science
||Synthetic - Chemical Vapour Transport (CVT)
Titanium disulfide (TiS2) is a semimetal with an indirect band-overlap of about 0.12 eV. It has been successfully employed as an electrode material for rechargeable sodium and lithium ion batteries.
A single sheet of TiS2 is formed by a titanium atom layer sandwiched between two layers of sulfur atoms that are covalently bonded to the titanium atoms. Like other Group IV transition metal dichalcogenides, TiS2 crystallises in an octahedral (1T) phase, which is more energetically stable compared to its hexagonal (2H) phase.
Monolayer titanium disulfide is the lightest member of the transition metal dichalcogenide family. It has promising applications in energy conversion and storage systems. 2D titanium disulfide has also been used in non-linear optics, supercapacitors, and ultrafast fiber laser applications.
Titanium disulfide is manufactured using chemical vapour transport (CVT) crystallisation, with crystals having a purity in excess of 99.999%.
Titanium disulfide single crystals can be used to prepare monolayer and few-layer TiS2 by mechanical or liquid exfoliation.
Literature and Reviews
Electronic Properties and Chemical Reactivity of TiS2 Nanoflakes, C. Cucinotta et al., J. Phys. Chem. C, 119, 15707−15715 (2015); DOI: 10.1021/acs.jpcc.5b03212
Tracking the Chemical and Structural Evolution of the TiS2 Electrode in the Lithium-Ion Cell Using Operando X‑ray Absorption Spectroscopy, L. Zhang et al., Nano Lett., 18, 4506−4515 (2018); DOI: 10.1021/acs.nanolett.8b01680.
Room Temperature and Aqueous Solution-Processed 2D TiS2 as Electron Transport Layer for Highly Efficient and Stable Planar n-i-p Perovskite Solar Cells, ACS Appl. Mater. Interfaces, 10 (17), 14796-14802 (2018); DOI: 10.1021/acsami.8b03225.
Intercalation and lattice expansion in titanium disulfide, M. Whittingham et al., J. Chem. Phys. 62, 1588 (1975); doi: 10.1063/1.430581.
Thio sol–gel synthesis of titanium disulfide thin films and nanoparticles using titanium(IV) alkoxide precursors, A. Let et al., J. Phys. Chem. Solids 68, 1428–1435 (2007); doi:10.1016/j.jpcs.2007.03.001.
Unveiling two-dimensional TiS2 as an insertion host for the construction of high energy Li-ion capacitors, J. Mater. Chem. A, 5, 9177 (2017); DOI: 10.1039/c7ta01594a.
TiS2 nanoplates:Ahigh-rateandstable electrode material for sodium ion batteries, Y. Liu et al., Nano Energy, 20, 168–175 (2016); doi: 10.1016/j.nanoen.2015.12.028.
Titanium Disulfide: A Promising Low-Dimensional Electrode Material for Sodium Ion Intercalation for Seawater Desalination, P. Srimuk et al., Chem. Mater., 29, 9964−9973 (2017); DOI: 10.1021/acs.chemmater.7b03363.