In this work, 0.96(K0.48Na0.52)(1-x)Li(x)NbO(3-)0.04Bi(0.5)Na(0.5)ZrO(3) lead-free piezoceramics were prepared using the conventional solid state reaction method in order to attain both a high T-C and an enhanced d(33). The effect of Li content on their phase structure, electrical properties, and stability was systematically investigated. These results indicate that adding Li could result in the increase of T-C and the decrease of TO-T. Here we obtain the ceramics with an orthogonale-tetragonal phase boundary in the composition of x 0.02, and then enhanced piezoelectric properties and a high Curie temperature (i.e., d33 similar to 255 pC/N, k(p) similar to 41%, and TC similar to 360 degrees C) were observed, showing the realization of our objective. In addition, a good stability of piezoelectric and ferroelectric properties has been shown in such a material system. (C) 2014 Elsevier B.V. All rights reserved.