|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Rare Metal Extraction & Processing
||Production of rare earth -based compounds for hydrogen storage application from waste generated during the hydrometallurgical processing of nickel metal hydride (NiMH) batteries
||Moufida Mansouri, Cristian Tunsu, Burcak Ebin, Martina Petranikova
|On-Site Speaker (Planned)
The hydrometallurgical processing of nickel metal hydride (NiMH batteries) generates a feed containing several rare earths (REEs). In most of the developed processes, REEs are recovered as a mixture. To increase their potential, the utilization of this mixture should be explored. Herein, the reuse of the outputs generated by recycling for synthesis of new energy storage compounds has been investigated. The REENi5 samples for hydrogen storage application were prepared by using combustion followed by metallothermic process. The X-ray diffraction analysis shows that the samples ReeNi5 crystallized in hexagonal structure (P6/mmm) with presence of secondary phase attributed to the presence of metals impurities (Ni, Co, Zn, Al, Mn) in the feed. Hydrogen absorption and desorption of the obtained samples were studied.