Ternary metal sulfide on carbon fiber for high performance low-temperature lithium sulfur batteries

The morphology and microstructures of the prepared materials were characterized with Zeiss Supra55 Scanning Electron Microscopy (SEM) and FEI TECNAIG2 F30 Transmission Electron Microscopy (TEM, 200 kV). X-ray diffraction (XRD) measurements were performed using Rigaku D/max 2400 PC (CuKa). X-ray photoelectron spectroscopy (XPS) was performed using a Kratos AXIS Ultra DLD XPS system equipped with a microsphere energy analyzer and a monochromatic Al Kα source to determine accurate elemental composition and valence states. The galvanostatic charge/discharge measurements and deposition tests were carried out on a Neware analyzer at room temperature and a LAND analyzer at -20 ℃ between 1.7 and 2.8 V. Other electrochemistry test were performed on a VMP3 multichannel workstation.