Influence of manganese rate on structural, optical and electrochemical properties of CeO_(2) thin films deposited by spray pyrolysis:Supercapacitor applications

作     者：J.Zimou K.Nouneh A.Talbi L.El Gana A.El-Habib R.Hsissou M.Addou J.Zimou;K.Nouneh;A.Talbi;L.El Gana;A.El-Habib;R.Hsissou;M.Addou

作者机构：Laboratory of Materials Physics and SubatomicDepartment of PhysicsFaculty of ScienceIbn Tofail UniversityBP 13314000KenitraMoroco Thin Film and Nanomaterial Research TeamFaculty of Science and TechiquesAbdelmalek Essadi UniversityTangerMorocco Laboratory of Organic ChemistryCatalysis and EnvironmentFaculty of SciencesIbn Tofail UniversityBP 24214000KenitraMorocco 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2022年第40卷第10期

页      面：1611-1618页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 07[理学] 08[工学] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Project supported by Moroccan Ministry of Higher Education and Research and CNRST Morocco in the framework of ERANETMED-NIn FFE PPR/37/2015 and PPR/9/2015 projects 

主　　题：Ce1-xMnxO_(2)thin films Electrochemical properties ITO substrates XRD/UV-Vis/AFM Band gap energy Storage capacity 

摘      要：The present work aimed to investigate the electrochemical properties of ITO substrates in propylene carbonate(PC) with 0.5 mol/L lithium perchlorate(LiClO_(4)) medium in the presence of elaborated thin films of cerium dioxide pure and doped with manganese at varying ***_(1-x)Mn_(x)O_(2)(x=0 wt%,2 wt%,4 wt% and 6 wt%) were successfully deposited by the spray pyrolysis(SP) technique on the glass substrate and ITO at 450℃.The effects of manganese(Mn) doped thin films Ce_(1-x)Mn_(x)O_(2) were studied and investigated by using different analyses namely X-ray diffraction(XRD) analysis,Raman spectroscopy method,UV-Vis spectrophotometer technique,atomic force microscopy(AFM) analysis and electrochemical *** data obtained present a polycrystalline with a face-centred cubic structure of fluorite *** results of undoped and Mn doped thin films show two peaks at 465 and 600 cm^(-1),due to the formation of extrinsic oxygen vacancies by the incorporation of Mn into Ce1-xMnxO_(2) *** dispersive spectroscopy(EDS) data show the presence of Ce,O,and Mn elements in the elaborated *** AFM results reveal that the surface roughness decreases with increasing Mn ***,band gap energy of thin films decreases with increasing in Mn rate due to the formation of defect state between valence and conduction *** storage capacity of the elaborated Ce_(1-x)Mn_(x)O_(2)/ITO/PC+LiClO_(4) electrode reaches a maximum of 1.997 mF in the presence of 6 wt% of Mn.