Flexible supercapacitor electrodes based on TiO2/rGO/TiO2 sandwich type hybrids

Agharezaei, Parastoo; Abdizadeh, Hossein; Golobostanfard, Mohammad Reza

doi:10.1016/j.ceramint.2017.11.214

Cited by 34 publications

(8 citation statements)

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“…Parastoo Agharezaei et al fabricated a flexible supercapacitor electrode based on the TiO 2 /rGO/TiO 2 sandwich structure, which showed a capacitance value of 83.7 F g −1 at 5 mV s −1 scan rate. 88 The enhanced electrochemical performance may be attributed to two major improvements in the ICS-TiO 2 electrode. First, the addition of sucrose enhanced the electrical conductivity of the composite electrode, which improved the charge transport.…”

Section: Resultsmentioning

confidence: 99%

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In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

et al. 2020

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Supercapacitors have attracted significant attention in the last few years as they have the capability to fulfill the demand for both power and energy density in many energy storage applications. In this study, an in situ carbon-supported titanium oxide (ICS-TiO 2 ) electrode has been prepared using sucrose and TiO 2 powder. The ICS-TiO 2 powder was prepared by slipcasting, followed by the annealing of the TiO 2 slurry. Sucrose was added to the TiO 2 slurry as a soluble carbon source, and was converted into carbon at 600 C then coated on the TiO 2 particles. The morphological and structural evolution of the electrode was investigated by FEG-SEM, FEG-TEM, XRD, BET, FTIR, XPS and Raman spectroscopy. The electrochemical characterization of ICS-TiO 2 demonstrated that this material exhibits an efficient value of specific capacitance (277.72 F g À1 at 25 mV s À1 ) for charge storage. ISC-TiO 2 also exhibits a specific capacitance of 180 F g À1 at 2 A g À1 in a 1 M Na 2 SO 4 aqueous electrolyte. The results suggest that ICS-TiO 2 can be utilized as a highperformance electrode material for supercapacitors with desirable electrochemical properties. Fig. 3 (a) Nitrogen adsorption/desorption isotherms; (b) nitrogen desorption/desorption pore size distribution; (c) XRD pattern, (d) Raman spectra; (e) FTIR spectra of TiO 2 and ICS-TiO 2 ; (f) TGA of ICS-TiO 2 .This journal is

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Section: Resultsmentioning

confidence: 99%

“…91 The performances of the carbon-TiO 2 composites from literature are given in Table 1. 88,92,[95][96][97][98] The improvement in the performance is because of the increased electrical conductivity and surface area of the ISC-TiO 2 electrode with the coating of the sucrose-derived carbon.…”

Section: Electrochemical Characterization Of Ics-tiomentioning

confidence: 99%

In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

et al. 2020

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“…The rGO sandwiched between the TiO 2 was stable until bending angle of 90° with 83.7 F g −1 at a low scan rate of 5 mV s −1 and further decreased with the increase in the applied currents. [ 156 ] While the template‐assisted growth of the TiO 2 [ 157 ] encrypted with the rGO resulted in 397 F g –1 with high energy and power density, due to the available OH groups in the cellulose which have enabled a better charge transport mechanisms with the GO, compared with the hydrolyzed titania giving 286 F g −1 . [ 158 ] While the sol–gel, hydrolysis and electrospun methods were together tried by Liu et al., [ 159 ] to produce the polycrystalline fibers of the TiO 2 , calcined and treated with monomer, which was subsequently layered on a filter paper for further polymerization.…”

Section: Conventional Electrode Materialsmentioning

confidence: 99%

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Benzigar

Dasireddy²,

Guan

et al. 2020

Adv Funct Materials

107

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The progressive size reduction of electronic components is experiencing bottlenecks in shrinking charge storage devices like batteries and supercapacitors, limiting their development into wearable and flexible zero-pollution technologies. The inherent long cycle life, rapid charge-discharge patterns, and power density of supercapacitors rank them superior over other energy storage devices. In the modern market of zero-pollution energy devices, currently the lightweight formula and shape adaptability are trending to meet the current requirement of wearables. Carbon nanomaterials have the potential to meet this demand, as they are the core of active electrode materials for supercapacitors and texturally tailored to demonstrate flexible and stretchable properties. With this perspective, the latest progress in novel materials from conventional carbons to recently developed and emerging nanomaterials toward lightweight stretchable active compounds for flexi-wearable supercapacitors is presented. In addition, the limitations and challenges in realizing wearable energy storage systems and integrating the future of nanomaterials for efficient wearable technology are provided. Moreover, future perspectives on economically viable materials for wearables are also discussed, which could motivate researchers to pursue fabrication of cheap and efficient flexible nanomaterials for energy storage and pave the way for enabling a widerange of material-based applications.

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“…The metal oxides should be electronically conductive for the supercapacitor application [ 19 – 21 ]. For the electrochemical stability, the metal can exist in two or more oxidation states over a continuous range with no phase changes, which may involve structure changes to reduce the stability of electrodes [ 22 – 24 ]. The oxide lattice also can facilitate the protons intercalating freely into and out of the oxide during the reduction and oxidation processes, respectively [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Characteristic Effect of Ag/TiO₂ Nanoarray Composite Structure on Supercapacitor Electrode Properties

et al. 2018

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Ag-ion-modified titanium nanotube (Ag/TiO2-NT) arrays were designed and fabricated as the electrode material of supercapacitors for electrochemical energy storage. TiO2 nanotube (NT) arrays were prepared by electrochemical anodic oxidation and then treated by Ag metal vapor vacuum arc (MEVVA) implantation. The Ag amount was controlled via adjusting ion implantation parameters. The morphology, crystallinity, and electrochemistry properties of as-obtained Ag/TiO2-NT electrodes were distinguished based on various characterizations. Compared with different doses of Ag/TiO2-NTs, the electrode with the dose of 5.0 × 1017 ions·cm−2 exhibited much higher electrode capacity and greatly enhanced activity in comparison to the pure TiO2-NTs. The modified electrode showed a high capacitance of 9324.6 mF·cm−3 (86.9 mF·g, 1.2 mF·cm−2), energy density of 82.8 μWh·cm−3 (0.8 μWh·g, 0.0103 μWh·cm−2), and power density of 161.0 mW·cm−3 (150.4 μW·g, 2.00 μW·cm−2) at the current density of 0.05 mA. Therefore, Ag/TiO2-NTs could act as a feasible electrode material of supercapacitors.

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Flexible supercapacitor electrodes based on TiO2/rGO/TiO2 sandwich type hybrids

Cited by 34 publications

References 60 publications

In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Surface Characteristic Effect of Ag/TiO₂ Nanoarray Composite Structure on Supercapacitor Electrode Properties

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Flexible supercapacitor electrodes based on TiO2/rGO/TiO2 sandwich type hybrids

Cited by 34 publications

References 60 publications

In situcarbon-supported titanium dioxide (ICS-TiO2) as an electrode material for high performance supercapacitors

In situcarbon-supported titanium dioxide (ICS-TiO2) as an electrode material for high performance supercapacitors

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Surface Characteristic Effect of Ag/TiO2 Nanoarray Composite Structure on Supercapacitor Electrode Properties

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Product

Resources

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In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

In situcarbon-supported titanium dioxide (ICS-TiO₂) as an electrode material for high performance supercapacitors

Surface Characteristic Effect of Ag/TiO₂ Nanoarray Composite Structure on Supercapacitor Electrode Properties