Facet-Engineered Tungsten Disulfide for Promoting Polysulfide Electrocatalysis in Lithium-Sulfur Batteries.

Distinct facets of an electrocatalyst can promote polysulfide (LiS ( = 4, 6, 8) and LiS ( = 1, 2)) redox kinetics in lithium-sulfur (Li-S) battery chemistry. Herein, we report that the (100) facet of tungsten disulfide (e-WS) generated in situ by electrochemical pulverization exhibits onset potentials of 2.52 and 2.

Three-Dimensional MoS Nanodot-Impregnated Nickel Foam Electrodes for High-Performance Supercapacitor Applications.

An economical and binder-free electrode was fabricated by impregnation of sub-5 nm MoS nanodots (MoS NDs) onto a three-dimensional (3D) nickel substrate using the facile dip-coating method. The MoS NDs were successfully synthesized by controlled bath sonication of highly crystalline MoS nanosheets. The as-fabricated high-surface area electrode demonstrated promising electrochemical properties.