A Single-Step Process for Preparing Supercapacitor Electrodes from Carbon Nanotubes

Shi, Rui; Lu, Jinhua; Pan, Chen

doi:10.4236/snl.2011.11003

Cited by 25 publications

(7 citation statements)

References 16 publications

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“…Ni-foam-based CNTs retained almost 72% of the initial capacitance at a high current density. 88 Compact-designed supercapacitors were fabricated using large-scale freestanding and flexible SWCNT films as electrode materials. 89 The SWCNT films were prepared by floating CVD method.…”

Section: Cnt-based Materialsmentioning

confidence: 99%

Carbon-based nanostructured materials and their composites as supercapacitor electrodes

Bose¹,

Kuila²,

Mishra³

et al. 2012

J. Mater. Chem.

719

384

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This critical review provides an overview of current research on carbon-based nanostructured materials and their composites for use as supercapacitor electrodes. Particular emphasis has been directed towards basic principles of supercapacitors and various factors affecting their performance. The focus of the review is the detailed discussion regarding the performance and stability of carbon-based materials and their composites. Pseudo-active species, such as, conducting polymer/metal oxide have been found to exhibit pseudo-capacitive behavior and carbon-based materials demonstrate electrical double layer capacitance. Carbon-based materials, such as, graphene, carbon nanotubes, and carbon nanofibers, provide high surface area for the deposition of conducting polymer/metal oxide that facilitates the efficient ion diffusion phenomenon and contribute towards higher specific capacitance of the carbon based composite materials with excellent cyclic stability. However, further scope of research still exists from the view point of developing high energy supercapacitor devices in a cost effective and simple way. This review will be of value to researchers and emerging scientists dealing with or interested in carbon chemistry.

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Section: Cnt-based Materialsmentioning

confidence: 99%

Carbon-based nanostructured materials and their composites as supercapacitor electrodes

Bose¹,

Kuila²,

Mishra³

et al. 2012

J. Mater. Chem.

719

384

View full text Add to dashboard Cite

show abstract

“…Pushparaj et al, 2007 [12], used as electrode MWNTs aligned perpendicularly to the current collector and embedded in cellulose, and they fabricated supercapacitors with a maximum power density of 1.5 kW/kg for an RTIL electrolyte. Shi et al [13] reported that growing carbon nanotubes directly on the nickel foam current collector lowered the internal resistance. Ma et al [14] reported the inclusion of MWNTs in phenolic resin mixtures and carbonisation of the mixture at 850…”

Section: Introductionmentioning

confidence: 99%

Carbon-Based Fibrous EDLC Capacitors and Supercapacitors

Lekakou

Moudam

Markoulidis

et al. 2011

Journal of Nanotechnology

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This paper investigates electrochemical double-layer capacitors (EDLCs) including two alternative types of carbon-based fibrous electrodes, a carbon fibre woven fabric (CWF) and a multiwall carbon nanotube (CNT) electrode, as well as hybrid CWF-CNT electrodes. Two types of separator membranes were also considered. An organic gel electrolyte PEO-LiCIO 4 -EC-THF was used to maintain a high working voltage. The capacitor cells were tested in cyclic voltammetry, charge-discharge, and impedance tests. The best separator was a glass fibre-fine pore filter. The carbon woven fabric electrode and the corresponding supercapacitor exhibited superior performance per unit area, whereas the multiwall carbon nanotube electrode and corresponding supercapacitor demonstrated excellent specific properties. The hybrid CWF-CNT electrodes did not show a combined improved performance due to the lack of carbon nanotube penetration into the carbon fibre fabric.

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“…The CNTs could be fabricated through different methods. Shi et al [110] stated the importance of CNTs synthesize method on the performance of the electrode. CNTs were grown on 3D porous nickel (Ni) foam by means of the single-step CVD method, in which the resultant electrode exhibited a superior capacitive performance at higher current densities, less ESR, and a capacitance about 127% greater than the CNT electrode fabricated through the conventional transfer technique.…”

Section: Carbon Nanotubes (Cnts)mentioning

confidence: 99%

Electrode Materials for Supercapacitors: A Review of Recent Advances

2020

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The advanced electrochemical properties, such as high energy density, fast charge–discharge rates, excellent cyclic stability, and specific capacitance, make supercapacitor a fascinating electronic device. During recent decades, a significant amount of research has been dedicated to enhancing the electrochemical performance of the supercapacitors through the development of novel electrode materials. In addition to highlighting the charge storage mechanism of the three main categories of supercapacitors, including the electric double-layer capacitors (EDLCs), pseudocapacitors, and the hybrid supercapacitors, this review describes the insights of the recent electrode materials (including, carbon-based materials, metal oxide/hydroxide-based materials, and conducting polymer-based materials, 2D materials). The nanocomposites offer larger SSA, shorter ion/electron diffusion paths, thus improving the specific capacitance of supercapacitors (SCs). Besides, the incorporation of the redox-active small molecules and bio-derived functional groups displayed a significant effect on the electrochemical properties of electrode materials. These advanced properties provide a vast range of potential for the electrode materials to be utilized in different applications such as in wearable/portable/electronic devices such as all-solid-state supercapacitors, transparent/flexible supercapacitors, and asymmetric hybrid supercapacitors.

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A Single-Step Process for Preparing Supercapacitor Electrodes from Carbon Nanotubes

Abstract: ABSTRACT

Cited by 25 publications

References 16 publications

Carbon-based nanostructured materials and their composites as supercapacitor electrodes

Carbon-based nanostructured materials and their composites as supercapacitor electrodes

Carbon-Based Fibrous EDLC Capacitors and Supercapacitors

Electrode Materials for Supercapacitors: A Review of Recent Advances

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