Preparation And Characterization Of Electrodes And Electrolytes For Batteries

In this work, liquid phase co-exfoliated MoS2/PEO and MoS2/rGO have been prepared as negative electrode materials for Li-ion batteries. The combination of cyclic voltammery and chronopotentiomery results reveal that the as-prepared MoS2/100k PEO (PEO with the molecular weight of 100k) composites display good reversible charge/discharge behavior.Restacked MoS2 is prepared through the exfoliation and restacking process and used as anode material for Na-ion batteries.The restacked MoS2 exhibited higher reversible capacity than the values previously reported for pure MoS2.We also studied a kind of solid polymer electrolyte, PEO/LiAsFs complex. This complex forms two different crystalline structures at different annealing temperatures. Both structures exhibit high resolution 13C NMR spectra. We applied 2D exchange 13C experiment and 13C fp-RFDR DQ-SQ experiments to assign the resonances, paving the way towards better understanding of the molecular motions of different crystalline structures.