LiMn2O4 spinel cathode materials were modified with 1%, 3% and 5% Co-3(PO4)(2) coating with a simple chemical deposition process, followed by calcinations at 420 degrees C for 3 h in air. The Co-3(PO4)(2) surface modified samples showed much better capacity retention at both room temperature and 60 degrees C than bare LiMn2O4. Especially, 3 wt.% Co-3(PO4)(2) coated sample exhibited superior capacity retention with only 12% capacity loss after 100 cycles at 60 degrees C with a final capacity around 110 mAh g(-1). From the electrochemical impedance spectroscopy (EIS) analysis, Co-3(PO4)(2) surface coating suppressed the undesirable growth of electrochemical impedance spectroscopy (SEI). The cyclic voltammetry (CV) confirmed that Co-3(PO4)(2) surface modification improved the stability of the LiMn2O4 structure. Therefore, Co-3(PO4)(2) will be a promising coating material for LiMn2O4 to improve the cyclic performance. (C) 2015 Elsevier B.V. All rights reserved.