Abstract: Tracers for oil recovery, particularly fluorescent nanotracers conservative in aqueous phases. The tracer comprises a core-shell nanoparticle tailored according to the operation to be traced. It contains a fluorescent core that allows the detection thereof in the field and a functionalized polymeric shell that provides increased stability in high salinity aqueous phases. A method for preparing said nanotracer. Given the nanotracer versatility, it can be used both for tracing fracking steps as well as meshes of secondary and tertiary recovery.

Abstract: The present invention is directed to an anode for a lithium-ion battery and a method of manufacturing the same. The anode is manufactured from a material composed of Si and C known as SBA-15/C having a porous structure of mesopores interconnected by micropores, wherein carbon nanofibers occupy the pore space of the porous structure. The anode has improved conductivity properties and allows to mitigate the drawbacks linked to the volumetric expansion of the anode during the operation of a lithium-ion battery.