Lanthanum telluride (La2Te3) thin films are synthesized via a successive ionic layer adsorption and reaction (SILAR) method. The crystal structure, surface morphology and surface wettability properties are investigated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FE-SEM) and contact angle goniometer techniques, respectively. The La2Te3 material exhibits a specific surface area of 51 m(2) g(-1) determined by Brunauer-Emmett-Teller (BET) method. La2Te3 thin film electrode has a hydrophilic surface which consists of interconnected pine leaf-like flaky arrays that affect the performance of the supercapacitor. The supercapacitive performance of La2Te3 film electrode is evaluated in 1 M LiClO4/PC electrolyte using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy techniques. La2Te3 film electrode exhibits a specific capacitance of 194 F g(-1) at a scan rate of 5 mV s(-1) and stored energy density of BOW h kg(-1) with delivering power density of 7.22 kW kg(-1). La2Te3 film electrode showed capacitive retention of 82% over 1000 cycles at a scan rate of 100 mV s(-1). Further, flexible La2Te3[LiClO4-PVA] La2Te3 supercapacitor cell is fabricated. (C) 2016 Elsevier Inc. All rights reserved.