Elevated performances of SnS anodes with MWNTs as conductive agent for rechargeable lithium-ion batteries

Abstract

SnS nanoparticles were mechanochemically synthesized and fabricated into electrodes with two kinds of conductive agents, acetylene black and multi-wall carbon nanotubes (MWNTs), respectively. The morphology and structure of as-synthesized SnS powder were characterized by scanning electron microscopy and X-ray diffraction. The electrochemical properties of as-prepared electrodes were investigated by discharge-charge test, cyclic voltammogram, and electrochemical impedance spectrum. By comparing the variation of the charge-transfer impedance R ct at different discharge states, it was found that the value of R ct of the electrode with MWNTs as conductive agent was less than that of the electrode with acetylene black as conductive agent. The electrode with MWNTs as conductive agent had preferable cycling performances, which was believed to be attributed to the tenacity and good conductivity of MWNTs.

High-performance humidity sensor using Schottky-contacted SnS nanoflakes for noncontact healthcare monitoring

“…Its anisotropic crystal structures pose interesting anisotropic properties, such as polarized light, electric field, strain, and so on [20,21]. Inspired by the unique electrical and physical properties, SnS has great potential application in photovoltaic converters [22], photodetectors [23], solid-state batteries [24], field-effect transistors [25], and gas detectors [26]. Especially for gas sensing between polar gas and SnS, the strong charge transfer and the adsorption-induced in-gap states can affect the carrier density and distribution in SnS and lead to outstanding sensing performances [27].…”