Poly(3-methylthiophene)/MnO2 composite electrodes as electrochemical capacitors

Rios, Emerson C.; Rosario, Adriane V.; Mello, Rosâne; Micaroni, Liliana

doi:10.1016/j.jpowsour.2006.09.056

Cited by 58 publications

(35 citation statements)

References 49 publications

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“…It is well known that electrode material is one of the dominating factors that influence the performance of the ECs [3,4]. At present, three different types of supercapacitors are commonly described in literature, depending on the nature of the active material used, carbon materials [5][6][7], conducting polymers [8][9][10], and metal-oxides [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

An Interconnected Hierarchical Porous Carbon Materials Prepared by Polymer Precursor and Its Application as Electrode in Supercapacitors

Ran¹,

Tan²,

Kong³

et al. 2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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Abstract. Interconnected hierarchical porous carbon (IHPC) was prepared by a poly(high internal phase emulsion) (polyHIPE) and carbonation method based on phenolic-formaldehyde resin for supercapacitors. Structural and morphological characterizations of IHPC were carried out using field emission scanning electron microscopy (SEM). Capacitive behaviors of IHPC were investigated by cyclic voltammetry and galvanostatic charge-discharge. Electrochemical tests showed IHPC material have a maximum capacitance of 106 F/g and good cycle stability for supercapacitor application. IntroductionEnergy is one of the most important topics in the 21st century. With the rapid depletion of fossil fuels and increasingly worsened environmental pollution caused by vast fossil-fuel consumption, there is high demand to make efficient use of energy and to seek renewable and clean energy sources that can substitute fossil fuels to enable the sustainable development of our economy and society. Energy storage, an intermediate step to the versatile, clean, and efficient use of energy, has received worldwide concern and increasing research interest [1].Electrochemical capacitors (ECs), as the intermediate devices between conventional batteries and dielectric capacitors, have drawn increasingly attention because of its safety, short charging time and electrochemical stability [2]. It is well known that electrode material is one of the dominating factors that influence the performance of the ECs [3,4]. At present, three different types of supercapacitors are commonly described in literature, depending on the nature of the active material used, carbon materials [5][6][7], conducting polymers [8][9][10], and metal-oxides [11][12][13]. Carbon materials are useful in wide application due to its good conductivity, low cost, and high surface area. Moreover, the carbon materials have good power density, good stability and low resistance for supercapacitors. Carbon materials involved activated carbon [14,15], carbon fiber [16,17], carbon nanotubes [18], and porous carbon [19,20], et al.In this paper, an interconnected hierarchical porous carbon (IHPC) was prepared by the polyHIPE and carbonation method based on phenolic-formaldehyde resin for supercapacitors. Structural and morphological characterizations of IHPC were carried out using field emission scanning electron microscopy (SEM), Capacitive behavior of IHPC was investigated by cyclic voltammetry and galvanostatic charge-discharge in 2 M KOH aqueous solution. The maximum capacitance was up to 106 F/g at the density of 5 mA/cm 2 . ExperimentsAll of the chemicals were analytical grade, purchased from Sinopharm Chemical Reagent Co. Ltd. and used without further purification. Synthesis of porous polymeric material: Resorcinol and formalin (n resorcinol : n formalin =1: 2) were added to a container and heated to 30 ºC to form a homogeneous solution. After cooling to room temperature a certain mass of amphoteric emulsifier sodium dodecylsulfate (SDS) was added. The resulting clear solution was stirred ...

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Section: Introductionmentioning

confidence: 99%

An Interconnected Hierarchical Porous Carbon Materials Prepared by Polymer Precursor and Its Application as Electrode in Supercapacitors

Ran¹,

Tan²,

Kong³

et al. 2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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“…In addition, the increasing environmental and economic impact of the production and the use of fossil fuels have stimulated the search for alternative energy sources, such as electrochemical energy (batteries, fuel cells and electrochemical capacitors) [1]. In this regard, conventional capacitors and batteries are recognized as highly attractive energy storage devices to satisfy the above needs.…”

Section: Introductionmentioning

confidence: 99%

New Composite Electrode Material Based on Glassy Carbone/Polythiophene/MnO2

Chikouche¹,

Sahari²,

Charef³

et al. 2013

JMSE-B

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Abstract:In this paper, it presents the work which consists to develop and characterize a modified electrode with a conductive polymer film, poly [3-methyl thiophene] then incorporating manganese dioxide MnO 2 into the film. The deposition of the polymer film on the surface of the glassy carbon electrode is realized by the electrochemical oxidation of the monomer [3-methyl thiophene] in an organic medium. Then the electrode obtained was immersed in a solution containing ions Mn 4+ to introduce into the polymeric film. The technique of insertion of manganese ions is performed by interaction with the polymer film. The electrochemical oxidation of the modified electrode in an aqueous medium will precipitate the manganese dioxide in the form of particles in the polymer film. In this study, it was found that several parameters affect the amount of manganese dioxide introduced as the pH of the medium and the thickness of the polymer film.

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“…The amorphous form of hydrous ruthenium oxides was found to be a promising material for high power and high energy density of ECs, but the cost problem restricts their widespread usages [9][10][11]. Up to now, NiO has become a promising candidate material for the ECs due to its inexpensive and excellent performance [12].…”

Section: Introductionmentioning

confidence: 99%

Impact of electrolyte additives (alkali metal salts) on the capacitive behavior of NiO-based capacitors

Zhang

Wang

Zhang

et al. 2011

Korean J. Chem. Eng.

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To improve the specific capacitance and energy density of electrochemical capacitor, nanostructured NiO was prepared by high temperature solid-state method as electrode material. The crystal structure and morphology of as-parepared NiO samples were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Cyclic voltammetry (CV) measurement was applied to investigate the specific capacitance of the NiO electrode. Furthermore, a novel mixed electrolyte consisting of NaOH, KOH, LiOH and Li 2 CO 3 was prepared for the NiO capacitor, and the component and concentration of the four different electrolytes was examined by orthogonal test. The results showed that the NiO sample has cubic structure with nano-size particles, and the optimal composition of the electrolyte was: NaOH 2 mol L −1 , KOH 3 mol L −1 , LiOH 0.05 mol L −1 , and Li 2 CO 3 0.05 mol L −1 . At a scan rate of 10 mV s −1 , the fabricated capacitor exhibits excellent electrochemical capacitive performance, while the specific capacitance and the energy density were 239 F g −1 and 85 Wh kg −1 , which was higher than one-component electrolyte.

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Poly(3-methylthiophene)/MnO2 composite electrodes as electrochemical capacitors

Cited by 58 publications

References 49 publications

An Interconnected Hierarchical Porous Carbon Materials Prepared by Polymer Precursor and Its Application as Electrode in Supercapacitors

An Interconnected Hierarchical Porous Carbon Materials Prepared by Polymer Precursor and Its Application as Electrode in Supercapacitors

New Composite Electrode Material Based on Glassy Carbone/Polythiophene/MnO2

Impact of electrolyte additives (alkali metal salts) on the capacitive behavior of NiO-based capacitors

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