Abstract

I will discuss energy storage systems incorporating graphene, such as silicon-graphene hybrids, with an introduction to solvothermally synthesized transition metal dichalcogenides. Silicon-graphene (Si-FLG) composite electrode have been optimised and fabricated using a pilot-scale manufacturing method. A comprehensive study on the electrochemical performance and the impedance response using electrochemical impedance spectroscopy (EIS) is discussed. The study demonstrated that the incorporation of FLG results in significant performance improvement in terms of cyclability, capacity retention, electronic conductivity, diffusion properties and tensile parameters. Moreover, the diffusion impedance during Si phase change as well as the variation against cycle number was investigated through Staircase Potentio-Electrochemical Impedance Spectroscopy (SPEIS), which is more comprehensive and straightforward than previous state-of-charge (SoC) based diffusion study. I will also discuss anode chemistry development based around MoS2. graphene hybrids for Li and Na-ion energy storage.