Fast solution combustion synthesis of porous NaFeTi3O8 with superior sodium storage properties

In this work, NaFeTi₃O₈ with three-dimensional porous net-like sheet morphology is firstly prepared by a simple and effective solution combustion method. Encouragingly, when being assessed as an anode electrode for sodium ion batteries, the NaFeTi₃O₈ net-like sheet composite exhibits superior electrochemical properties. We also study the effect of the combustion fuel glycine. The results indicate that the NaFeTi₃O₈ composite tends to be porous with glycine as the combustion fuel, which displays more excellent long cyclic stability (discharge capacity of 91 mA h g^‑1 after 1000 cycles at the current density of 0.5 A g^‑1) and superior rate performance (84.4 mA h g^‑1 even at 1.6 A g^‑1) than that of NaFeTi3O8 without glycine as the combustion agent. The enhanced electrochemical properties could be ascribed to the unique porous morphology, which achieves better electrolyte infiltration and faster ion diffusion.