One‐Dimensional V<sub>2</sub>O<sub>5</sub>@Polyaniline Core/Shell Nanobelts Synthesized by an In situ Polymerization Method

Li, Guicun; Zhang, Chuanqin; Peng, Hongrui; Chen, Kezheng

doi:10.1002/marc.200900322

Cited by 41 publications

(20 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, Li et al. developed V 2 O 5 ‐Polyaniline 1D‐core‐shell nano‐belts by an in‐situ polymerization method that significantly exhibit improved conductivity as well as environmental stability option for energy storage devices . Taking this into account, Bai et al.…”

Section: V2o5‐carbon‐based Compositesmentioning

confidence: 99%

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Majumdar¹,

2019

View full text Add to dashboard Cite

Vanadium pentoxide (V 2 O 5 ) is renowned among the highly efficient supercapacitor electrode-materials for high power and energy densities, excellent specific capacitance, prolonged cycle lives, variable oxidation states of V, reversible nature of interconversions, theoretical importance, etc. Various synthetic methodologies and morphologies, formation of composites, and doping for tuning properties are the additional causes of interest. Different synthetic techniques like sol-gel, solvothermal, electro-deposition, electro-spinning, atomic layer deposition, etc. are employed to prepare V 2 O 5 -based electrode materials with merits and demerits. High rate of material agglomeration and poor conductivity limit its usage in pristine morphology. Accordingly, the impact on charge storage behavior of V 2 O 5 on blending with various carbon-based systems has been explored for materials like activated carbons, conducting polymers, carbon nanotubes and functionalized graphene systems as binary/ternary composites. The aim has been to optimize the key factors such as reduced nanostructure lumping, minimal interfacial resistance and ultrafast charge diffusion across hollow porous structures which may eventually lead to the theoretically expected high specific capacitance (> 1000 F g À 1 ). In this review, we have discussed on the recent progress in the research of V 2 O 5 -based materials and highlighted on the correlation between morphology and electrochemical performances. In the course, we have attempted to delineate the advantage-disadvantages of different composite morphologies that may help to outline the present status and future aspects of these materials that the authors believe will be of first-hand assistance especially to the beginners in the field of research.

show abstract

Section: V2o5‐carbon‐based Compositesmentioning

confidence: 99%

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Majumdar¹,

2019

View full text Add to dashboard Cite

show abstract

“…Chemical syntheses of polyaniline DOI: 10.1134/S1070363212020168 are commonly performed using persulfates whose oxidation potential is +2.01 V. However, it was found experimentally that oxidation of aniline also occurs by the action of weak oxidants whose potential is close to 1 V or even lower. Such oxidants as FeCl 3 (+0.77 V) [6,7], V 2 O 5 , (+0.98 V) [8][9][10][11][12], AgNO 3 (+0.8 V) [12][13][14], MnO 2 (+1.2 V) [15], KIO 3 (+1.1 V) [16], Pd +2 (+0.89 V) [17], and Au +3 (+1.0 V) [12,18] are capable of oxidizing aniline not only in alkaline and neutral media but also in acid medium where the potential barrier to oxidation is fairly high.…”

mentioning

confidence: 99%

Oxidation of aniline with strong and weak oxidants

Sapurina

Stejskal

2012

Russ J Gen Chem

View full text Add to dashboard Cite

Oxidative polymerization of aniline by the action of a strong oxidant, ammonium peroxodisulfate, and a weak oxidant, silver nitrate, was studied in media with different acidities. Depending on the reaction conditions, the organic fraction of the products contained either nonconducting aniline oligomers or conducting high-molecular polyaniline. The effect of the oxidation potential on the oxidation process and formation of supramolecular structures by oxidation products was discussed on the basis of analysis of the kinetics and products of aniline oxidation by spectroscopic, conductometric, thermogravimetric, chromatographic (gel permeation), and electron microscopic methods. A relation was revealed between the morphology of composite materials and their electric conductivity.Oxidation of aniline gives rise to numerous useful products such as drugs, dyes, explosives, and polymeric materials. Polyaniline (PANI) obtained by oxidative polymerization of aniline is among the most widely known representatives of conducting polymers. Polyaniline has found practical applications due to its redox and acid-base properties, high thermal stability, and electric conductivity. It is used in energy-saving devices and sensors, for electromagnetic shielding, and for the preparation of antistatic and conducting coatings; it also acts as corrosion inhibitor. Polyaniline possesses a high potential for use in medicine and heterogeneous catalysis [1].Polyaniline is synthesized by oxidation of aniline in aqueous or aqueous-organic medium. Polymerization of aniline is a chain process, i.e., monomer units are successively appended to a polymer chain bearing an active terminal group. Wei [2] considered aniline polymerization to be a specific reactivated chain process. Chain propagation involves repeated activation-deactivation acts which imply oxidation-reduction. Inactive polymer chain is activated by the action of oxidant, but the subsequent reaction with monomer leads to reversible reduction and deactivation. During the reduction process, polymer chain extends due to addition of monomeric unit, and two protons are released thereby.Oxidation of aniline in acid medium gives regular polymer chains containing more than 95% of parasubstituted units connected in a head-to-tail mode [3]. Regular structure determines polyconjugation and a unique set of properties intrinsic to polyaniline, in particular high electronic and proton conductivity, redox power, and paramagnetism [1]. Unlike other kinds of chain polymerization, e.g., radical polymerization where oxidant participates only in chain initiation, oxidative polymerization requires a large amount of oxidant [4] which is consumed for each act of addition of monomer unit. Therefore, molar concentration of oxidant should be comparable with the monomer concentration. Here, oxidant operates throughout the entire process until addition of the last monomer portion to polymer chain.Polymerization of aniline can be performed by electrochemical or chemical methods with the use of various oxidants. In ...

show abstract

“…Moreover, the composite of nanostructured polyaniline and V 2 O 5 showed a potential application in lithium secondary battery. Li et al fabricated uniform one-dimensional V 2 O 5 /polyaniline core-shell nanobelts by using V 2 O 5 nanobelt as a reactive template [117]. The formation of the V 2 O 5 /polyaniline core-shell nanobelts was related to the in situ polymerization of aniline monomer through etching V 2 O 5 nanobelts.…”

Section: Template Directed Growth Of Conducting Polymer Nanostructuresmentioning

confidence: 99%

Conducting Polymer Nanostructures: Template Synthesis and Applications in Energy Storage

Pan

Qiu

Dou

et al. 2010

IJMS

309

125

View full text Add to dashboard Cite

Conducting polymer nanostructures have received increasing attention in both fundamental research and various application fields in recent decades. Compared with bulk conducting polymers, conducting polymer nanostructures are expected to display improved performance in energy storage because of the unique properties arising from their nanoscaled size: high electrical conductivity, large surface area, short path lengths for the transport of ions, and high electrochemical activity. Template methods are emerging for a sort of facile, efficient, and highly controllable synthesis of conducting polymer nanostructures. This paper reviews template synthesis routes for conducting polymer nanostructures, including soft and hard template methods, as well as its mechanisms. The application of conducting polymer mesostructures in energy storage devices, such as supercapacitors and rechargeable batteries, are discussed.

show abstract

One‐Dimensional V₂O₅@Polyaniline Core/Shell Nanobelts Synthesized by an In situ Polymerization Method

Cited by 41 publications

References 31 publications

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Oxidation of aniline with strong and weak oxidants

Conducting Polymer Nanostructures: Template Synthesis and Applications in Energy Storage

Contact Info

Product

Resources

About

One‐Dimensional V2O5@Polyaniline Core/Shell Nanobelts Synthesized by an In situ Polymerization Method

Cited by 41 publications

References 31 publications

V2O5 and its Carbon‐Based Nanocomposites for Supercapacitor Applications

V2O5 and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Oxidation of aniline with strong and weak oxidants

Conducting Polymer Nanostructures: Template Synthesis and Applications in Energy Storage

Contact Info

Product

Resources

About

One‐Dimensional V₂O₅@Polyaniline Core/Shell Nanobelts Synthesized by an In situ Polymerization Method

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications