Single step synthesis of rGO, copper oxide and polyaniline nanocomposites for high energy supercapacitors

Viswanathan, Aranganathan; Shetty, A. Nityananda

doi:10.1016/j.electacta.2018.09.033

Cited by 67 publications

(12 citation statements)

References 97 publications

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“…The specific capacitance is decreasing gradually with the increase of current density (Figure 7d) which might be due to the fast redox kinetics in the system. The specific capacity of the FTSCs is calculated by using Equation 5 [48]

\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr Q={C}_{{\rm S}}\times {\rm \Delta }V\hfill\cr}}

…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Induced Borate Allotropes for Expedite Charge Transfer in Lithium‐Ion Batteries and Hydroxyl Ion Capture Activity in Flexible Pseudocapacitor

Kasiviswanathan

Kumaresan

Senthil

et al. 2022

Batteries & Supercaps

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Despite lithium-ion battery (LIB) and supercapacitor materials have gone through numerous enhancements, achieving high energy density as well as power density together is still a dream for the industries. In this scenario, herein we report, boric acid coated αÀ MnO 2 anode with 1288 mAh g À 1 at 0.1 C at the initial cycle and of an average discharge capacity of 570 mAh g À 1 at 0.1 C over 20 cycles, high-rate capability and 100 % Coulombic efficiency after 60 cycles for LIB. The Li + diffusion coefficient estimated from GITT and EIS measurements reveals that the H 3 BO 3 coated αÀ MnO 2 electrode has superior Li-ion kinetics ( D Li þ ~10 À 10 cm 2 s À 1 ) than bare αÀ MnO 2 . Coin cells with boric acid coated αÀ MnO 2 electrode are able to power up red and blue LEDs continuously for about 24-32 hours. The ex-situ investigations reveal an interesting self-assembled active electrodeelectrolyte interfacial bridging Li 4 B 2 O 5 layer formation. This significant active layer allows free migration of lithium ions across interface that leads to good cyclability. In flexible supercapacitor, the boric acid coated αÀ MnO 2 yields excellent cyclability over 500 cycles with specific capacitance of 35 F g À 1 at 1 A g À 1 and further 200 cycles at 30°acute angle with 21 F g À 1 at 1 A g À 1 . The research overthrows the significance of boric acid in conversion reactions for active interfacial bridging layer in LIB and hydroxyl ion capturing agent in flexible supercapacitor.

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\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr Q={C}_{{\rm S}}\times {\rm \Delta }V\hfill\cr}}

…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Induced Borate Allotropes for Expedite Charge Transfer in Lithium‐Ion Batteries and Hydroxyl Ion Capture Activity in Flexible Pseudocapacitor

Kasiviswanathan

Kumaresan

Senthil

et al. 2022

Batteries & Supercaps

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“…In the setting of NIBP combined with rGO and some metal oxide, there are several reports to consider [ 236 , 238 , 239 , 240 , 241 ]. Viswanathan and Shetty [ 238 ] prepared a ternary nanocomposite of rGO, Cu 2 O-CuO, and PANI by means of a one-stage chemical method, and the influence on the electrochemical performance was studied, according to the variation in the relative quantity of the different components. In this case, the best charge storage was for a nanocomposite of rGO, Cu 2 O-CuO, and PANI, with masses of 75, 250, and 300 mg, respectively, denoted as G12CP.…”

Section: Nanostructured Cp As Supercapacitorsmentioning

confidence: 99%

Nanostructured Conducting Polymers and Their Applications in Energy Storage Devices

et al. 2023

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Due to the energy requirements for various human activities, and the need for a substantial change in the energy matrix, it is important to research and design new materials that allow the availability of appropriate technologies. In this sense, together with proposals that advocate a reduction in the conversion, storage, and feeding of clean energies, such as fuel cells and electrochemical capacitors energy consumption, there is an approach that is based on the development of better applications for and batteries. An alternative to commonly used inorganic materials is conducting polymers (CP). Strategies based on the formation of composite materials and nanostructures allow outstanding performances in electrochemical energy storage devices such as those mentioned. Particularly, the nanostructuring of CP stands out because, in the last two decades, there has been an important evolution in the design of various types of nanostructures, with a strong focus on their synergistic combination with other types of materials. This bibliographic compilation reviews state of the art in this area, with a special focus on how nanostructured CP would contribute to the search for new materials for the development of energy storage devices, based mainly on the morphology they present and on their versatility to be combined with other materials, which allows notable improvements in aspects such as reduction in ionic diffusion trajectories and electronic transport, optimization of spaces for ion penetration, a greater number of electrochemically active sites and better stability in charge/discharge cycles.

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“…73 The N 1s spectrum was divided into three peaks at 401.36, 399.64 and 398.80 eV binding energies, which belonged to the (-N + ), quinoid imine bonds (-NH-) and benzenoid amine bonds (] N-)of polyaniline, respectively. 74,75 The peaks at 459.09 and 464.75 eV resulted from the deconvolution of the Ti 2p spectrum to two peaks belonging to Ti 2p 1/2 and Ti 2p 3/2 , respectively. 76 The Ag 3d spectrum exhibited two peaks assigned to Ag 3d 3/2 and Ag 3d 5/2 , and the spin-orbital photoelectron peaks are shown at 367.20 and 373.23 eV, respectively.…”

Section: Characterizationmentioning

confidence: 99%

Solar-driven seawater desalination via plasmonic hybrid MOF/polymer and its antibacterial activity

et al. 2023

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Single step synthesis of rGO, copper oxide and polyaniline nanocomposites for high energy supercapacitors

Cited by 67 publications

References 97 publications

Electrochemically Induced Borate Allotropes for Expedite Charge Transfer in Lithium‐Ion Batteries and Hydroxyl Ion Capture Activity in Flexible Pseudocapacitor

Electrochemically Induced Borate Allotropes for Expedite Charge Transfer in Lithium‐Ion Batteries and Hydroxyl Ion Capture Activity in Flexible Pseudocapacitor

Nanostructured Conducting Polymers and Their Applications in Energy Storage Devices

Solar-driven seawater desalination via plasmonic hybrid MOF/polymer and its antibacterial activity

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