Hybrid organic–inorganic nanocomposite materials for application in solid state electrochemical supercapacitors

Gómez‐Romero, Pedro; Chojak, Małgorzata; Cuentas-Gallegos, Karina; Asensio, Juan A.; Kulesza, Paweł J.; Casañ‐Pastor, N.; Lira‐Cantú, Mónica

doi:10.1016/s1388-2481(03)00010-9

Cited by 239 publications

(119 citation statements)

References 34 publications

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“…Following an initial rapid decrease, a leveling effect was observed at currents exceeding 3 A g −1 and specific capacitance started to oscillate around the value of 40 F g −1 in the case of CNTs/PDDA/[P 2 W 17 VO 62 ] 8− and around 20 F g −1 in the case of bare CNTs. This type of behavior was expected as it is known that with increasing currents, capacitances decrease due to the shortened charging/ discharging times [14,16]. Although an initial rapid current decrease might imply some limitations of charge propagation, it could be assumed that electrode materials considered here exhibited fast charge propagation dynamics as under high current condition (above 3 A g −1 ), no rapid decrease of capacitance was observed.…”

Section: Dynamics Of Charge Transportsupporting

confidence: 52%

“…Therefore, to use POMs as active electrode materials, a development of their immobilization methods is required. Recently, various hybrid systems with POMs have been proposed and studied for solid-state applications [14][15][16]. Common representative examples include the systems containing POMs immobilized within conducting polymers [17], gel matrices [18], Langmuir-Blodgett layers [19], or as adsorbates existing on nanoparticles' surfaces [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…With regard to electrochemical charging in redox supercapacitors, POMs were not commonly used regardless a few recent reports which indicated a large contribution of charge exchanged during multiple redox processes of POMs to overall capacitance [7,14,15,[38][39][40]. Composite materials, which are composed of conducting polymers and POMs [14,15], POMs with CNTs, or activated carbons [7,38], have been already described. Depending on the charge storage mechanism, electrochemical capacitors (often termed as supercapacitors) could be classified into two types [41]: electrical double-layer capacitors (EDLCs) and so-called faradaic (redox-type) capacitors.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid materials utilizing polyelectrolyte-derivatized carbon nanotubes and vanadium-mixed addenda heteropolytungstate for efficient electrochemical charging and electrocatalysis

Sosnowska

Góral-Kurbiel

Skunik-Nuckowska

et al. 2013

J Solid State Electrochem

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Preparation and electrochemical behavior of new hybrid materials composed of multi-walled carbon nanotubes (CNTs) that were derivatized with poly(diallyldimethylammonium) chloride and modified with vanadium-mixed addenda Dawson-type heteropolytungstate, [P 2 W 17 VO 62 ] 8− , is described here. These nanostructured composite systems exhibited fast dynamics of charge propagation. They were characterized by the transport (effectively diffusional) kinetic parameter of approximately 8×10 −8 cm −2 s −1/2 and the specific capacitance parameter of 82 F g −1 (at the charging/discharging current of 200 mA g −1 ). The latter parameter for bare CNTs was found to be only 50 F g −1 under analogous conditions. These observations were based on the results of galvanostatic charging-discharging, cyclic voltammetric, and AC impedance spectroscopic measurements. The improved capacitance properties were attributed to the systems' pseudocapacitive features originating from the fast redox transitions of the [P 2 W 17 VO 62 ] 8− polyanions. In addition to the fast redox conduction, the proposed organicinorganic hybrid materials exhibited interesting electrocatalytic activity toward reduction of bromate in the broad concentration range (sensitivity, 0.24 mA cm −2 mmol −1 dm 3 ).

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Section: Dynamics Of Charge Transportsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hybrid materials utilizing polyelectrolyte-derivatized carbon nanotubes and vanadium-mixed addenda heteropolytungstate for efficient electrochemical charging and electrocatalysis

Sosnowska

Góral-Kurbiel

Skunik-Nuckowska

et al. 2013

J Solid State Electrochem

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“…Molecular oxides have been incorporated in different solid matrices, such as zirconia [18], silica [19], alumina [20], TiO 2 [21], and zeolites [3], exhibiting desorption problems due to weak bonding with the matrix. POM particles have also been deposited on electrode surfaces and immobilized into or within conducting polymers to modify their properties [11,[22][23][24][25][26]. Furthermore, they have been incorporated in a diversity of carbon matrices such as activated carbon [15,16,27], carbon cloth and fibers [4,5], gels [6] and aerogels [14], pastes [7,8], nanofibers [12], multiwalled carbon nanotubes [9-11, 13, 28-33], and graphene [10,11,[34][35][36][37] and electrodeposited onto vitreous carbon substrates [38,39].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical study of H3PMo12 retention on Vulcan carbon grafted with NH2 and OH groups

Cuentas-Gallegos

López-Cortina

Brousse

et al. 2015

J Solid State Electrochem

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In this work, we show a comparative study based on the effects of specific chemical functional groups (-OH, -NH 2 ), grafted on Vulcan carbon (VC) with the incorporation of a specific polyoxometalate (POM), PMo 12 (H 3 PMo 12 O 40 ), to improve electrochemical performance. We observed a decrease in the specific surface area of the grafted matrices (VC-OH and VC-NH 2 ) [1], and the same trend was observed for PMo 12 (POM) incorporation. Our electrochemical studies showed low concentrations of POM in unmodified VCs and higher POM concentrations for grafted matrices (VC-OH and VC-NH 2 ) after 500 voltammetric cycles, especially for the VC grafted with -OH groups (VC-OH-POM). Mechanisms have been proposed for POM interaction with the grafted groups in carbon, emphasizing the role of aqueous medium and redox activity of POM. Cyclic voltammograms suggested the POM anchoring through -OH groups with a strong interaction as a covalent bond, resulting in a surface coverage of 1.66 × 10 −11 mol cm −2. Surface modifications could be extrapolated to other carbons, and the materials could be employed for different potential applications such as photocatalysis, amperometric sensors, fuel cells, and supercapacitors.

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“…[1][2][3][4][5][6][7][8][9][10] These hybrids constitute a class of advanced composite materials with unusual properties, which can be used in many fields such as optics, ionics, electronics, mechanics etc.…”

Section: Introductionmentioning

confidence: 99%

Organic/inorganic hybrid materials formed from TiO2 nanoparticles and polyaniline

Schnitzler¹,

Zarbin²

2004

J. Braz. Chem. Soc.

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Este artigo descreve a síntese e caracterização de diferentes híbridos orgânico/inorgânicos formados entre a polianilina e o óxido de titânio. O método de preparação é baseado no processo sol-gel, partindo do isopropóxido de titânio como precursor. Duas rotas sintéticas visando a obtenção dos híbridos foram utilizadas, baseadas na mistura da anilina no meio reacional antes ou após a formação do óxido. Diferentes quantidades de anilina foram utilizadas visando compreender este efeito nas características do material final formado. As amostras foram caracterizadas por análise térmica, difratometria de raios-X, espectroscopias Raman, UV-Vis em modo refletância difusa e IV-TF, além de voltametria cíclica. Os resultados indicaram que os diferentes procedimentos experimentais foram bem sucedidos na obtenção de híbridos formados por nanopartículas de TiO 2 (estrutura anatase) e polianilina em sua forma condutora, sal esmeraldina. Não foram detectadas grandes diferenças entre as amostras obtidas através das duas rotas sintéticas utilizadas, exceto pela quantidade de polímero formada nos materiais. This paper describes the synthesis and characterization of organic/inorganic hybrid materials formed from TiO 2 nanoparticles and polyaniline (PANI). The preparation method is based on a solgel technique using titanium tetra-isopropoxide as oxide precursor, and two synthetic routes to the hybrids formation were employed, based on the addition of aniline after or before the sol formation. Different amounts of aniline were used to verify this effect on the characteristics of the formed materials. Samples were characterized by electronic spectroscopy, Raman spectroscopy, Fourier transformed infrared spectroscopy, thermal analysis, X-ray diffractometry and cyclic voltammetry. Results show that the different experimental routes are successful to produce hybrids formed by oxides nanoparticles and polyaniline in its conducting form, the emeraldine salt. There are no strong differences between the samples obtained by the two synthetic routes employed, except by the amount of polymer in the final material. Keywords: sol-gel method, polyaniline, nanocomposites IntroductionInterest in the development of new inorganic/organic (nano)composites has grown in recent years due to a wide range of potential use of these materials.1-10 These hybrids constitute a class of advanced composite materials with unusual properties, which can be used in many fields such as optics, ionics, electronics, mechanics etc.One important class of hybrid materials is that in which the organic fraction is composed by conducting polymers, such as polyaniline (PANI) or polypyrrole. [11][12][13][14][15][16][17][18][19] The unique properties of hybrid materials become more pronounced when at least one of the fractions occurs in nanometric scale. Nanocomposites in which the polymer fraction occurs in nanometric scale can be obtained by the encapsulation of conducting polymers within void spaces of inorganic host matrices such as pores, cavities, tunnels, micelles and inte...

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Hybrid organic–inorganic nanocomposite materials for application in solid state electrochemical supercapacitors

Cited by 239 publications

References 34 publications

Hybrid materials utilizing polyelectrolyte-derivatized carbon nanotubes and vanadium-mixed addenda heteropolytungstate for efficient electrochemical charging and electrocatalysis

Hybrid materials utilizing polyelectrolyte-derivatized carbon nanotubes and vanadium-mixed addenda heteropolytungstate for efficient electrochemical charging and electrocatalysis

Electrochemical study of H3PMo12 retention on Vulcan carbon grafted with NH2 and OH groups

Organic/inorganic hybrid materials formed from TiO2 nanoparticles and polyaniline

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