title: Chemical synthesis and supercapacitive properties of lanthanum telluride thin film.
abstract: 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 La2Te3material exhibits a specific surface area of 51m2g-1determined by Brunauer-Emmett-Teller (BET) method. La2Te3thin 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 La2Te3film electrode is evaluated in 1M LiClO4/PC electrolyte using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy techniques. La2Te3film electrode exhibits a specific capacitance of 194Fg-1at a scan rate of 5mVs-1and stored energy density of 60Whkg-1with delivering power density of 7.22kWkg-1. La2Te3film electrode showed capacitive retention of 82% over 1000cycles at a scan rate of 100mVs-1. Further, flexible La2Te3|LiClO4-PVA|La2Te3supercapacitor cell is fabricated.
authors.affiliation: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, India; Mems and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.
authors.forename: S J
authors.initials: SJ
authors.lastname: Patil
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-Dong, Puk-Gu, Gwangju 500-757, South Korea.
authors.forename: A C
authors.initials: AC
authors.lastname: Lokhande
authors.affiliation: Mems and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.
authors.forename: D-W
authors.initials: DW
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-Dong, Puk-Gu, Gwangju 500-757, South Korea.
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, India. Electronic address: l_chandrakant@yahoo.com.
authors.forename: C D
authors.initials: CD
authors.lastname: Lokhande
keywords: Energy density; Pine-leaf like flaky array; Supercapacitor; Thin film