Microwave-assisted synthesis of Zn-WO3 and ZnWO4 for pseudocapacitor applications

被引：35

作者：

Kumar, R. Dhilip ^{[1
]}

Andou, Y. ^{[2
]}

Karuppuchamy, S. ^{[1
]}

机构：

[1] Alagappa Univ, Dept Energy Sci, Karaikkudi 630003, Tamil Nadu, India

[2] Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, 2-4 Hibikino, Kitakyushu, Fukuoka 8080196, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2016年 / 92卷

关键词：

Microwave; Zinc tungstate; Nanopowder; Pseduocapacitor; NANOCRYSTALLINE TITANIUM-DIOXIDE; ELECTRONIC BEHAVIOR; PHOTOCATALYTIC ACTIVITIES; GRAPHENE NANOSHEETS; FACILE SYNTHESIS; COMPOSITE; SUPERCAPACITOR; PERFORMANCE; DEGRADATION; TRANSITION;

D O I：

10.1016/j.jpcs.2016.01.022

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanosized Zn-WO3 and ZnWO4 materials have been prepared by microwave irradiation method. The physico-chemical characterization of the prepared nanomaterials was carried out by X-ray diffraction (XRD) and high resolution-scanning electron microscopy (HR-SEM) techniques. The size and shape of the ZnWO4 material can be controlled by changing the temperature. The XRD analysis revealed the formation of monoclinic phase of the calcined nanopowder. The HR-SEM images showed the sphere and plate shape particles. The electrochemical behavior of the ZnWO4 modified electrodes was investigated using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) techniques. The synthesized material shows the pseudocapacitance. The specific capacitance of 35.70 F/g was achieved for the Zn-WO3 nanopowder. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：94 / 99

页数：6

共 47 条

[1]

An KH, 2001, ADV FUNCT MATER, V11, P387, DOI 10.1002/1616-3028(200110)11:5<387::AID-ADFM387>3.0.CO

[2]

2-G

[3] Graphene nanosheets-tungsten oxides composite for supercapacitor electrode [J].

Cai, Yun ;

Wang, Yan ;

Deng, Shaojuan ;

Chen, Gang ;

Li, Qing ;

Han, Bingqian ;

Ha, Rong ;

Wang, Yude .

CERAMICS INTERNATIONAL, 2014, 40 (03) :4109-4116

[4] Enhanced photoelectrocatalytic performance of Zn-doped WO3 photocatalysts for nitrite ions degradation under visible light [J].

Cheng, X. F. ;

Leng, W. H. ;

Liu, D. P. ;

Zhang, J. Q. ;

Cao, C. N. .

CHEMOSPHERE, 2007, 68 (10) :1976-1984

[5] TRANSITION FROM SUPERCAPACITOR TO BATTERY BEHAVIOR IN ELECTROCHEMICAL ENERGY-STORAGE [J].

CONWAY, BE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1991, 138 (06) :1539-1548

[6] Diagnostic analyses for mechanisms of self-discharge of electrochemical capacitors and batteries [J].

Conway, BE ;

Pell, WG ;

Liu, TC .

JOURNAL OF POWER SOURCES, 1997, 65 (1-2) :53-59

[7] Nanostructured transition metal oxides for aqueous hybrid electrochemical supercapacitors [J].

Cottineau, T ;

Toupin, M ;

Delahaye, T ;

Brousse, T ;

Bélanger, D .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2006, 82 (04) :599-606

[8] Bio-molecule Assisted Aggregation of ZnWO4 Nanoparticles (NPs) into Chain-like Assemblies: Material for High Performance Supercapacitor and as Catalyst for Benzyl Alcohol Oxidation [J].

Ede, Sivasankara Rao ;

Ramadoss, Ananthakumar ;

Nithiyanantham, U. ;

Anantharaj, S. ;

Kundu, Subrata .

INORGANIC CHEMISTRY, 2015, 54 (08) :3851-3863

[9] Nanotubular materials as electrodes for supercapacitors [J].

Frackowiak, E ;

Jurewicz, K ;

Szostak, K ;

Delpeux, S ;

Béguin, F .

FUEL PROCESSING TECHNOLOGY, 2002, 77 :213-219

[10] Photocatalytic activities of a novel ZnWO4 catalyst prepared by a hydrothermal process [J].

Fu, Hongbo ;

Lin, Jie ;

Zhang, Liwu ;

Zhu, Yongfa .

APPLIED CATALYSIS A-GENERAL, 2006, 306 :58-67

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