Molten synthesis of ZnO.Fe3O4 and Fe2O3 and its electrochemical performance

Autor: K. P. Loh, Tew You Wen Daryl, B. V. R. Chowdari, Kannan Ramanathan, Stefan Adams, Kevin Chee Wei Jie, M. V. Reddy, C. T. Cherian, Tan Yi Hao
Rok vydání: 2014
Předmět:
Zdroj: Electrochimica Acta. 118:75-80
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2013.11.125
Popis: Fe 2 O 3 and ZnO.Fe 3 O 4 hybrids has been synthesised by molten salt method and tested as anode material for Li-ion batteries. The crystal structure and phase purity was evaluated by X-ray diffraction and the morphology of the final powders was examined by the Scanning electron microscopy. The Li-cycling properties of Fe 2 O 3 and ZnO-Fe 3 O 4 were studied by cyclic voltammery (58 μV s −1 ) and galvanostatic discharge-charge cycling in the voltage range, 0.005- 3 V at a current of 60 mA g −1 . The Fe 2 O 3 samples prepared at 280 °C and 900 °C showed stable reversible capacities of 600 and 620 mAhg −1 at the end of 50 cycles respectively. On the other hand, ZnO.Fe 3 O 4 hybrids showed improved and stable capacity of 820 mAh g −1 at the end of the 50th cycle.
Databáze: OpenAIRE