The comparative lithium storage properties of urchin-like hematite spheres: hollow vs. solid

Abstract

Urchin-like α-Fe₂O₃ spheres, hollow or solid, are obtained by thermally annealing their α-FeOOH precursor structures, which are synthesized via a facile hydrothermal method. The “hollowness” of these α-FeOOH spheres can be readily controlled by varying the glycerol concentration. The structure-dependent lithium storage properties of these α-Fe₂O₃ samples might shed light on the future development of advanced electrode materials for lithium-ion batteries.