Electrochemical supercapacitive properties of SILAR-Deposited Mn3O4 electrodes

被引：36

作者：

Nwankwo, M. C. ^{[1
,2
]}

Nwanya, A. C. ^{[1
,3
,4
]}

Agbogu, A. ^{[1
]}

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

Ejikeme, Paul M. ^{[5
]}

Bucher, R. ^{[3
]}

Osuji, R. U. ^{[1
,3
,4
]}

Maaza, M. ^{[3
,4
]}

Ezema, Fabian I. ^{[1
,3
,4
,6
]}

机构：

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

[2] Nnamdi Azikiwe Univ, Dept Sci Educ, Awka, Nigeria

[3] iThemba LABS Natl Res Fdn, Nanosci African Network NANOAFNET, 1 Old Faure Rd,POB 722, ZA-7129 Somerset West, Western Cape Pr, South Africa

[4] Univ South Africa UNISA, Coll Grad Studies, UNESCO UNISA Africa Chair Nanosci Nanotechnol, POB 392, Pretoria, South Africa

[5] Univ Nigeria, Dept Pure & Ind Chem, Nsukka, Nigeria

[6] Coal City Univ, Fac Nat & Appl Sci, Dept Phys, Enugu, Nigeria

来源：

VACUUM | 2018年 / 158卷

关键词：

Mn3O4 thin film; SILAR; Optical properties; Potentiostatic charge-discharge; Electrochemical impedance spectroscopy; THIN-FILMS; FACILE SYNTHESIS; PERFORMANCE; MNO2;

D O I：

10.1016/j.vacuum.2018.09.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, successive ionic layer adsorption and reactions (SILAR), a simple and cost-effective method was used to successfully synthesize Mn3O4 thin film electrodes on fluorine-doped tin oxide (PTO) and stainless steel (ss) substrates. The synthesized films were characterized using scanning electron microscopy (SEM), X-Ray diffraction (XRD) and UV-vis-NIR spectroscopy. The electrochemical energy storage behavior of the electrodes was evaluated using cyclic voltammetery (CV), potentiostatic charge-discharge (c-d) technique and electrochemical impedance spectroscopy (EIS) in 1M solution of Na2SO4 electrolyte. The highest specific capacitance of 786.2Fg(-1) was obtained at a scan rate of 5 mVs(-1) for the 80-cycle film electrode. The SILAR deposited Mn3O4 thin film electrodes is a promising material for pseudocapacitor application based on the electrochemical properties obtained.

引用

页码：206 / 214

页数：9

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