Ternary carbon composite films for supercapacitor applications

Tran, Minh-Hai; Jeong, Hae Kyung

doi:10.1016/j.cplett.2017.06.025

Cited by 11 publications

(5 citation statements)

References 30 publications

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“…Such systems have specific capacitances several times higher than those of their components (Figure 10a). The excellent electrochemical properties of ternary composites can be attributed to the high surface area and low equivalent series resistance, demonstrating that they improve the electrochemical performance for supercapacitor applications [97]. Among the multicomponent composites, a novel type of highly flexible and all-solid state supercapacitor utilizing hybrid aerogels exhibits promising properties (Figure 10b) [105].…”

Section: Capacitors Based On Carbon Nanotubes and Different Carbon Namentioning

confidence: 99%

“…In most cases, graphene oxide is used due to its hydrophilic character. However, its conductivity is low, and hence, it is doped by carbon nanotubes with very high conductivity [97]. Numerous synthesis methods have been used and a large family of hybrid composites based on graphene oxide and carbon nanotubes with the specific capacitance in the range of 120-222 F g À1 depending on the preparation procedure has been discovered [77,[98][99][100][101][102][103][104].…”

Section: Capacitors Based On Carbon Nanotubes and Different Carbon Namentioning

confidence: 99%

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Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

Grądzka¹,

Winkler²

2018

Carbon Nanotubes - Recent Progress

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This review is focused on the theoretical and practical aspects of electrochemical c a p a c i t o r sb a s e do nc a r b o nn a n o t u b e s .I np articular, recent improvements in the capacitance properties of the systems are discussed. In the first part, the charge storage mechanisms of the electrochemical capacitors are briefly described. The next part of the review is devoted to the capacitance properties of pristine single-and multi-walled carbon nanotubes. The major portion of the review is focused on the capacitance properties of modified carbon nanotubes. The electrochemical properties of nanotubes with boron, nitrogen, and other atoms incorporated into the carbon network structure as well as nanotubes modified with different functional groups are discussed. Special attention is paid to the composites of carbon nanotubes and conducting polymers, transition metal oxides, carbon nanostructures, and carbon gels. In all cases, the influences of different parameters such as porosity, structure of the electroactive layer, conductivity of the layer, nature of the heteroatoms, solvent and supporting electrolyte on the capacitance performance of hybrid materials are discussed. Finally, the capacitance properties of different systems containing carbon nanotubes are compared and summarized.

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Section: Capacitors Based On Carbon Nanotubes and Different Carbon Namentioning

confidence: 99%

Section: Capacitors Based On Carbon Nanotubes and Different Carbon Namentioning

confidence: 99%

Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

Grądzka¹,

Winkler²

2018

Carbon Nanotubes - Recent Progress

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“…Corresponding specific capacitance was cal- culated from the CV curves in Fig. 3(a) [2,3]. The obtained capacitance of CNT and TRGO were 49 and 53 Fg −1 , respectively, and all composite show higher capacitance compared to the precursor, demonstrating the synergic effect on the capacitance.…”

Section: Resultsmentioning

confidence: 97%

“…Carbon nanotube (CNT) has been investigated as an electrode of the supercapacitors since it has unusual properties, such as high electric and thermal conductivities and extraordinary mechanical properties [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A Thermally Reduced Graphite Oxide and Carbon Nanotube Composite for Supercapacitor Applications

Ghanashyam¹,

Jeong²

2018

New Physics: Sae Mulli

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A thermally reduced graphite oxide and carbon nanotube (TRGO-CNT) composite is synthesized for supercapacitor applications by using a simple chemical method. The TRGO-CNT composite shows higher capacitance then the precursors (TRGO and CNT), and its impedance is lower than that of CNT, meaning that TRGO of high surface area connected with a CNT could provide highly efficient surface area and good connection for supercapacitor electrodes. Different weight ratios of TRGO to CNT are investigated, and the results show that the composite with more TRGO has better performance in the electrochemical measurements. Based on these findings, the proper TRGO amount is necessary for a high-performance supercapacitor. Neither CNT nor TRGO by itself can give the highest electrochemical performance for the supercapacitor; thus, the synergistic effect of TRGO and CNT is important.

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“…On the other hand, GO itself is a promising material for various applications. As a proton conductor GO is applied in humidity sensors [10,14], in supercapacitors [15][16], as well as in a fieldeffect transistor [10,17], and nano composite membranes [18][19][20][21]. There is a possibility to integrate GO in graphene electronic devices [22].…”

Section: Introductionmentioning

confidence: 99%

A Review on the Conductive Properties of Graphene Oxide Films

2019

International Journal of Advanced Research in Chemical Science

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The behavior of interlayer water was studied in detail for graphite oxide [24-26]. By using neutron scattering, it has been shown [24] that, in the interlayer space, water may exist at high humidity in two forms: translational motion capable form and translational motion incapable one. The interlayer distance in graphite oxide was found [25] to abruptly change in the vicinity of freezing point. Talyzin et al. [25] have also established the presence of two types of water in the interlayer space of graphite oxide. The same conclusion was also reached by Zhu et al. [26] who investigated the thermal expansion of graphene layers and explained the negative thermal effect by reversible diffusion of free Abstract: Current-voltage characteristics of graphene oxide (GO) films were explored in water vapor as a function of water content in the film. The films can contain free and bound water. A decrease in current with time at a constant voltage is associated with the decrease in water content. Reduced GO (rGO) films exhibited proton and electron conductivity. For the proton conductivity E a = 0.9 eV, for the electron conductivity induced by thermolysis and chemical exposure E a = 1.15 eV. The rGO films is an example of mixed electron-proton conductivity when material conductivity can be regulated by external conditions. The field effect in a graphene oxide transistor for different conductivity types has been discovered and investigated. The possibility of accumulation and storage of electric charge in Nafion and GO films was demonstrated for the first time. The storage is governed by humidity of ambient environment. Charge accumulation occurs directly in Nafion or GO films.

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Ternary carbon composite films for supercapacitor applications

Cited by 11 publications

References 30 publications

Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

A Thermally Reduced Graphite Oxide and Carbon Nanotube Composite for Supercapacitor Applications

A Review on the Conductive Properties of Graphene Oxide Films

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