Spinel Li4Ti5O12/C composites were synthesized using gel-cast technique with acrylamide (AM) as monomer and NN-methylenebis-acrylamide as crosslinking agent. Effects of the amount of AM on the performances of the as-prepared materials were investigated. SEM photographs show that the primary particle size decreases gradually with the increase of AM content from 5 wt.% to 15 wt.%. When the AM content reaches at 15 wt.%, the agglomeration of the particles becomes obvious. Electrochemical measurements show that the Li4Ti5O12/C composite prepared with 10 wt.% AM presents relatively higher specific capacity (157.5 mAh g(-1)) and better cycling stability, especially at a higher current rate. Impedance measurement shows that its resistance is substantially lower than that of the other two, suggesting the improvement of the charge transfer process over the electrode surface. (C) 2013 Elsevier B.V. All rights reserved.