Polyaniline‐Intercalated Molybdenum Oxide Nanocomposites: Simultaneous Synthesis and their Enhanced Application for Supercapacitor

Zheng, Lei; Xu, Yang; Jin, Dong; Xie, Yi

doi:10.1002/asia.201000770

Cited by 75 publications

(28 citation statements)

References 43 publications

(70 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The polymer molecules are directed to grow along the large oriented tunnels of 3D hosts or interlayer space of the 2D hosts where the structurally organized frameworks are provided by the inorganic host. [ 6 ] But, main problem is that nanoparticles tend to self-aggregate due to their high surface energy which effectively reduces the contact area amongst the active materials, conductive materials, and electrolyte. So, it is very much essential to preserve the maximum available surface area of the active nanomaterials for their full utilizations.…”

mentioning

confidence: 99%

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO₂ Nanocomposites for Supercapacitor Energy‐Storage Application

Giri

Ghosh

Das

2013

Adv Funct Materials

156

117

View full text Add to dashboard Cite

1312www.MaterialsViews.com wileyonlinelibrary.com . IntroductionWith the rising progress of global economy and industry, the impending energy crisis has stimulated intense research on the low cost, environmentally friendly, and renewable energy resources. [ 1 ] Therefore, great efforts have been devoted to develop low cost electrode materials with high energy density, high power density, and excellent cycling stability. Supercapacitors, can be considered as the supreme candidate of the nextgeneration energy storage/conversion systems with the unique ability to store energy in a fraction of second and delivering the stored energy rapid enough than any other conventional energy storage devices. It also ensures high power density when coupled with batteries or fuel cells. [1][2][3][4] However, the supercapacitors suffer from low working potential that result in low energy density than conventional batteries. So, it's essential to improve their performances to encounter the higher requirements of future technologies by developing new materials with the interfaces at the nanoscale dimension. Lower specifi c energy of electrochemical double layer capacitors (EDLCs) with respect to the batteries and lower power densities of pseudocapacitors than EDLCs has motivated to develop the better performance characteristics hybrid supercapacitors. These hybrid supercapacitors use both Faradaic and non-Faradaic processes to store charge and thereby have achieved higher energy density and moderated power density accompanied with high cycling stability and thus have restricted the monopolism of pseudocapacitor.Intense research has established that combination of the micro structured carbonaceous materials with electroactive materials into a single system can take the benefi ts of both the double layer capacitance and pseudocapacitance arising from the synergistic interaction of the two. In this sense, graphene is the most interesting carbonaceous material with ultrahigh surface area (2600 m 2 g −1 ), excellent electric conductivity, two-dimensional sp 2 carbon arrangement with one-atom thickness. However, the strong electrostatic interaction amongst the graphene sheets leads to restacking of the sheets resulting in lower specifi c surface area and lower capacitance. [ 5 ] This drawbacks can be overcome by functionalization on the surface or incorporating nanocrystals in form of nanocomposites. The conducting polymers and transition metal oxides are two typical pseudocapacitive materials, which are capable of storing more charges than carbonaceous materials, but are limited by their poor stability and high resistance during cycling. The conducting polymer is frequently used into supercapacitor materials for obtaining the effi cient charge storage and delivery which strongly depends on the orientation of polymer chains into inorganic host. The polymer molecules are directed to grow along the large oriented tunnels of 3D hosts or interlayer space of the 2D hosts where the structurally organized frameworks are provided by the inorganic ...

show abstract

mentioning

confidence: 99%

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO₂ Nanocomposites for Supercapacitor Energy‐Storage Application

Giri

Ghosh

Das

2013

Adv Funct Materials

156

117

View full text Add to dashboard Cite

show abstract

“…Tubular and sheetlike nanocomposites of MoO 3 with polyaniline intercalated between layers of the oxide were prepared [172]. After about 100 cycles the sheet-like material showed a larger specific capacitance of 200 F·g -1 vs 170 F·g -1 for the tubular one.…”

Section: Molybdenummentioning

confidence: 99%

Synthesis, properties, and performance of nanostructured metal oxides for supercapacitors

Dubal

Holze

2014

Pure and Applied Chemistry

View full text Add to dashboard Cite

Beyond activated carbon and other forms of high-surface area carbon operating solely as double layer storage materials in capacitors of high capacitance commonly somewhat imprecisely called supercapacitors other electrode materials storing electric charge by reversible and fast superficial redox processes are studied as active masses. The resulting devices combining double layer and Faradaic process-based charge storage -commonly called hybrid ones -show significantly higher capacitances at only marginally diminished power capability. Among the suggested materials metal oxides feature most prominently. Their formation, characterization and properties together with the performance of prepared devices are reviewed here.Electric energy cannot be stored directly in amounts large enough to gain commercial viability. Systems employing e.g., superconductors or dielectric capacitors are either too large or too expensive in order to be of any wide importance (for examples and a brief review see [1]). Thus, basically two modes of rather direct storage employing chemical, more specifically physico-chemical, and electrochemical principles remain: Storage based on charge separation in the electrochemical double layer (i.e., capacitors) or storage based on the reversible conversion of electrical into chemical energy and vice versa A+ B C+ D: the accumulator (see Fig. 1).For various reasons the former mode has for a long time been associated with high power mostly because of the inherently fast processes leaving out any interfacial electrochemical reaction limited by the inherent constraints of interfacial processes and the latter with high energy because of the much larger amounts of energy which could be stored based on associated chemical conversion reactions. This is also the inherent reason of the lower power of the latter devices, interfacial reactions mostly associated with phase transformations and extended transport of matter tend to be slow. The energy density of the former devices tends to be low because of the limited amount of interfacial surface area available in any given device. This is illustrated in a Ragone plot showing some examples of storage devices (see Fig. 2).As indicated devices based on traditional electrolytic capacitor technologies (as in aluminum foil-or tantalum-pentoxide-based ones) show highest power density. Although these devices are based only on the movement and separation of electric charges without any chemical reaction being involved a short characterization of salient features may be helpful to settle the current confusion about these various devices.

show abstract

“…[1][2][3][4] As one of the most promising types of energy storage devices, supercapacitors or ultracapacitors have drawn great interest owing to their distinguishable features such as higher power density and longer cyclic life than conventional batteries, higher en-ergy density than capacitor, high rate capacity, rapid charge discharge mechanism and environment friendliness. [5][6][7][8][9][10][11] Based on the charge storage mechanism, supercapacitors can be divided into two types involving, surface faradaic reactions (pseudocapacitors) and ion adsorption at the electrolyte/electrode interface (electric double layer capacitors, EDLCs). [12][13] Studies have shown that electrode materials are primarily responsible for overall supercapacitor performance.…”

Section: Introductionmentioning

confidence: 99%

A Binder-Free Hybrid of CuO-Microspheres and rGO Nanosheets as an Alternative Material for Next Generation Energy Storage Application

Saraf

Dar²,

Natarajan

et al. 2016

ChemistrySelect

View full text Add to dashboard Cite

Herein, a facile and effective ultrasonication assisted approach has been employed to integrate hydrothermally produced CuO microspheres (CMS) with chemically synthesized reduced graphene oxide conducting nanosheets (CRGO), yielding a new composite material (CSCO). The synthesized materials have been probed by various characterization techniques. The electrochemical performance of all the materials are thoroughly studied by cyclic voltammetry (CV), galvanostatic charging‐discharging (GCD) and electrochemical impedance spectroscopy (EIS) techniques. At a current density of 0.125 A g−1, CSCO demonstrates an excellent specific capacitance of 244 F g−1 (more than six times higher than CMS and CRGO) and the maximum energy and power density values of 8.47 Wh kg−1 and 73.49 W kg−1, respectively. Additionally, it exhibits high rate performance (retains 82.78 % of its initial capacitance even at a high current density of 0.5 A g−1) and long cycle life (∼ 90 % up to 1000 cycles), confirming the robustness and high stability of the composite on the electrode surface. The superior electrochemical performance can be attributed to the positive synergistic effects between CMS and CRGO, providing mechanical robustness and short diffusion path for charge transfer, leading to high conductivity. Distinguishing features such as being binder‐free, ease of preparation, high energy and power density, make CSCO a potential candidate for high performance supercapacitors.

show abstract

Polyaniline‐Intercalated Molybdenum Oxide Nanocomposites: Simultaneous Synthesis and their Enhanced Application for Supercapacitor

Cited by 75 publications

References 43 publications

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO₂ Nanocomposites for Supercapacitor Energy‐Storage Application

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO₂ Nanocomposites for Supercapacitor Energy‐Storage Application

Synthesis, properties, and performance of nanostructured metal oxides for supercapacitors

A Binder-Free Hybrid of CuO-Microspheres and rGO Nanosheets as an Alternative Material for Next Generation Energy Storage Application

Contact Info

Product

Resources

About

Polyaniline‐Intercalated Molybdenum Oxide Nanocomposites: Simultaneous Synthesis and their Enhanced Application for Supercapacitor

Cited by 75 publications

References 43 publications

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO2 Nanocomposites for Supercapacitor Energy‐Storage Application

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO2 Nanocomposites for Supercapacitor Energy‐Storage Application

Synthesis, properties, and performance of nanostructured metal oxides for supercapacitors

A Binder-Free Hybrid of CuO-Microspheres and rGO Nanosheets as an Alternative Material for Next Generation Energy Storage Application

Contact Info

Product

Resources

About

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO₂ Nanocomposites for Supercapacitor Energy‐Storage Application

Growth of Vertically Aligned Tunable Polyaniline on Graphene/ZrO₂ Nanocomposites for Supercapacitor Energy‐Storage Application