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Devi, Mayanglambam Manolata; Ankush; Guchhait, Sujit Kumar; Sunaina; G. N., Suresh Babu; Sreekanth, M.; Kalaiselvi, N.; Ganguli, Ashok Kumar; Jha, Menaka
Journal of hazardous materials, 02/2020, Letnik: 384Journal Article
Display omitted •Zn, Mn and C sources have been extracted from spent primary batteries.•Extracted materials have been used as anode in rechargeable lithium ion batteries.•C-ZnMn2O4 shows high capacity of 600 mAhg−1 at a current density of 50 mAg−1. In an attempt to develop low cost, energy efficient and advanced electrode material for lithium-ion batteries (LIBs), waste-to-wealth derived as well as value added spent battery materials as potential alternatives assume paramount importance. By combining the low lithiation potential advantages, one can arrive at energy efficient electrodes bestowed with cost effective and eco-friendly benefits required for practical LIB applications. In the present study, Zn and Mn-salts along with C were successfully extracted from the spent zinc carbon batteries through a simple and efficient hydrometallurgy approach and decomposed thermally to obtain ZnMn2O4 at 350 °C for 12 h and 450 °C for 3 h. Further, C-ZnMn2O4 nanocomposites were prepared and demonstrated for appreciable electrochemical performance in LIB assembly. Our results show that C-ZnMn2O4 composites prepared at 350 °C and 450 °C demonstrate better performance than pristine ZnMn2O4 anode due to the improved electronic conductivity rendered by the added carbon obtained from spent primary battery. In particular, C-ZnMn2O4 at 350 °C @12 h exhibits appreciable electrochemical performance by showing a stable and higher capacity of 600 mAhg−1 at a current density of 50 mAg−1 in the voltage range of 0.01–3.0 V and qualifies it as a better performing cost-effective anode for LIBs.
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