International Journal of Hydrogen Energy, Vol.42, No.15, 10072-10080, 2017
Fe3O4/Ag microsheets assembled by interlaced nanothorns as high performance anode materials for lithium storage
Fe3O4/Ag nanocomposite is directly prepared by dealloying a well-designed FeAgAl source alloy in alkaline etching solution at room temperature. Selectively dissolving Al from FeAgAl alloy results in Fe3O4/Ag microsheets assembled by second order interlaced nanothoms. On account of the distinctive hierarchical micro-/nano-structure and the hybridization of well conductive Ag, Fe3O4/Ag composite shows much improved lithium storage performances with higher capacities, cycling stability, and coulombic efficiency compared with the pure Fe3O4 anode. Even the current rate is as high as 1 A g(-1), the capacity of Fe3O4/Ag composite still exceeds 600 mA h g(-1) after cycling 500 cycles compared with the remained value of only 294.8 mA h g(-1) for pure Fe3O4. Moreover, Fe3O4/Ag composite presents the excellent rate capabilities at whether low or high current densities. Owing to the superiorities of excellent properties and handy preparation, the Fe3O4/Ag anode exhibits encouraging prospect for lithium ion batteries. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.