Electrochemical intercalation of lithium ions into LiTi2(PO4)(3) prepared by sol-gel method in 1 M Li2SO4 aqueous electrolyte solution was studied with cyclic voltammetry (CV), galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS). It was found that there was one step of intercalation for LiTi2(PO4) 3 anode in the presence of aqueous electrolyte, corresponding to a pair of redox peak at E-SCE = -0.67/-0.86 V. The initial discharge capacity of the LiTi2(PO4)(3)parallel to LiMn2O4 cell is 44.41 mAh g(-1), the capacity retention of 67.3% after 60 cycles. The EIS for LiTi2(PO4)(3) electrode consisted of two semicircles in the aqueous electrolyte, which were attributed to Schottky contact resistance and charge transfer process, respectively. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.060301jes] All rights reserved.