nn8b01703_si_001.pdf (1.9 MB)
Robust and Conductive Red MoSe2 for Stable and Fast Lithium Storage
journal contribution
posted on 2018-04-16, 12:52 authored by Sanpei Zhang, Gan Wang, Jun Jin, Linlin Zhang, Zhaoyin Wen, Jianhua YangTwo-dimensional
(2D) layered transition-metal dichalcogenides (LTMDs)
display various crystal phases with distinct symmetries, structures,
and physical properties. Exploring and designing different structural
phases in two dimensions could provide an avenue for switching material
properties, aiming at practical applications for potential fields.
Here we demonstrate a conceptually designed approach to narrow the
band gap of MoSe2 and obtain a conductive red MoSe2 nanosheet. By introducing the high valence state of Mo species
and constructing the Mo–O bonding on the surface of the MoSe2 nanosheets, the electronic properties can be modified and
the conductivity is accordingly improved, an effect that significantly
improves their lithium storage capacity and high-rate capability.
We anticipate that the exploration of the conductive red MoSe2 with tunable band gap could help us unlock more potential
crystal structures of LTMD-based and even other 2D materials for further
applications.