reduced graphene oxide

Using the method of normalized galvanostatic curves, as well as taking into account the changes in the half-charge and half-discharge potentials of an electrode, the latter based on a sulfur composite with reduced graphene oxide, it was established that the main reason for electrode degradation during cycling was the loss of active material (due to the shuttle transfer of polysulfides and sulfur from the positive electrode to the negative lithium one).

This article show results of research work which focused on a new active materials for lithium ion rechargeable battery anode – reduced graphene oxide spheres, which made by blending of two liquids – hot vacuum oil in graphene oxide water dispersion, with subsequent reduction formed graphene oxide spheres in heated to 200°C vacuum oil. Investigated surface morphology, chemical bond structure and cyclic voltammetry of reduced graphene oxide spheres. Graphene oxide spheres show capacity 185 mA?h/g throughout 50 charge/discharge cycles.