Nanostructured LiMn 2O 4 prepared by a glycine-nitrate process for lithium-ion batteries

Abstract

Porous nanostructured spinel LiMn 2O 4 has been successfully synthesized using a glycine-nitrate combustion process. The average primary particle size of the as-synthesized powders was about 10 nm, but increased to about 100 nm with improved crystallinity after calcination at 800 °C for 2 h. Yet, the calcined powders were still highly porous and displayed reversible capacity of about 112 mA h g −1 at a discharge rate of 49.0 μA cm −2 (C/5 rate). At a high discharge rate of 2.44 mA cm −2 (10C rate), the obtainable reversible capacity was 57 mA h g −1.