The present disclosure generally relates to Vanadium Boride nanoparticle synthesis. In some examples, a method is described that includes fluorine based Vanadium Boride nanoparticle synthesis. In some examples, the method includes providing Vanadium Boride battery waste products, treating the battery waste products to treat precursors for fluorination, heating the precursors for fluorination to form VF3 and BH3 and heating the VF3 and BH3 to form VB2 nanorods in a liquid mixture, wherein the method is performed at less than approximately 700° C.