1 research outputs found
Layer-by-Layer Polyelectrolyte Assisted Growth of 2D Ultrathin MoS<sub>2</sub> Nanosheets on Various 1D Carbons for Superior Li-Storage
Transitional
metal sulfide/carbon hybrids with well-defined structures could not
only maximize the functional properties of each constituent but engender
some unique synergistic effects, holding great promise for applications
in Li-ion batteries and supercapacitors and for catalysis. Herein,
a facile and versatile approach is developed to controllably grow
2D ultrathin MoS<sub>2</sub> nanosheets with a large quantity of exposed
edges onto various 1D carbons, including carbon nanotubes (CNTs),
electrospun carbon nanofibers, and Te-nanowire-templated carbon nanofibers.
The typical approach involves the employment of layer-by-layer (LBL)
self-assembled polyelectrolyte, which controls spatially the uniform
growth and orientation of ultrathin MoS<sub>2</sub> nanosheets on
these 1D carbons irrespective of their surface properties. Such unique
structures of the as-prepared CNTs@MoS<sub>2</sub> hybrid are significantly
favorable for the fast diffusions of both Li-ions and electrons, satisfying
the kinetic requirements of high-power lithium ion batteries. As a
result, CNTs@MoS<sub>2</sub> hybrids exhibit excellent electrochemical
performances for lithium storage, including a high reversible capacity
(1027 mAh g<sup>–1</sup>), high-rate capability (610 mAh g<sup>–1</sup> at 5 C), and excellent cycling stability (negligible
capacity loss after 200 continuous cycles)