Structural characterization and electrochemical properties of cerium-vanadium (Ce-V) mixed oxide films synthesized by chemical route

被引：10

作者：

Amaechi, Ifeanyichukwu C. ^{[1
]}

Nwanya, Assumpta C. ^{[1
,2
]}

Obi, Daniel ^{[3
]}

Ezugwu, Sebastine C. ^{[4
]}

Udounwa, Alice E. ^{[1
]}

Ekwealor, Azubike B. C. ^{[1
]}

Osuji, Rose U. ^{[1
,5
,6
]}

Maaza, Malik ^{[5
,6
]}

Ezema, Fabian I. ^{[1
,5
,6
]}

机构：

[1] Univ Nigeria, Dept Phys & Astron, Nsukka, Enugu State, Nigeria

[2] Univ Nigeria, Natl Ctr Energy Res & Dev, Nsukka, Enugu State, Nigeria

[3] Univ Quebec, EMT INRS, Varennes, PQ J3X 1S2, Canada

[4] Univ Western Ontario, Dept Phys & Astron, London, ON, Canada

[5] Natl Res Fdn, iThemba LABS, Nanosci African Network NANOAFNET, Somerset West, Western Cape Pr, South Africa

[6] Univ South Africa UNISA, Coll Grad Studies, UNESCO UNISA Africa Chair Nanosci Nanotechnol, Pretoria, South Africa

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 02期

关键词：

Mixed oxide; Cyclic voltammetry (CV); Bandgap; Polyethylene glycol (PEG); THIN-FILMS; COUNTER-ELECTRODE; OPTICAL CHARACTERIZATION; LITHIUM; PERFORMANCE; ABSORPTION; CARBON; CEVO4;

D O I：

10.1016/j.ceramint.2015.10.156

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Mixed oxide thin films of cerium and vanadium were obtained by chemical bath methbd from Ce(NO3)(3) and 6H(2)O, NH4VO3 with distilled water as solvent in the presence of polyethylene glycol (PEG) as surfactant and dip coated on non-conducting quartz substrate. The optical, structural and morphological properties depend on post-deposition temperature. No remarkable effect was observed upon the addition of surfactant. The amorphous to polycrystalline transition of the films revealed that the inclusion of CeO2 was responsible for the widening of the energy bandgap 3.8 eV. The supercapacitive behavior of the electrode was evaluated using cyclic voltammetry (CV) and galvanostatic charge discharge techniques in 1 M LiClO4. The specific capacitance of 179 F/g was achieved for the mixed oxide electrode at a scan rate of 20 mV/s. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：3518 / 3524

页数：7

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