High energy density, robust and economical supercapacitor with poly(3,4-ethylenedioxythiophene)-CO2 activated rice husk derived carbon hybrid electrodes

Deshagani, Sathish; Krushnamurty, K.; Deepa, Melepurath

doi:10.1016/j.mtener.2018.05.008

Cited by 15 publications

(6 citation statements)

References 34 publications

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“…Except for a few reports by Reynolds’ group, − meaningful and relevant studies on pure ECP-based supercapacitors are scarce. ECPs that are commonly used in supercapacitors are poly(aniline) (PANi), poly(3,4-ethylenedioxythiophene) (PEDOT), and poly(pyrrole) (PPy). ,− Low-cost, chemically robust structures in doped (oxidized) states, high electrical conductivity, ease of fabrication in the form of films or uniform coatings, and ability to release and store charge via electrochemical reactions are the reasons for their widespread use in different storage devices − …”

Section: Introductionmentioning

confidence: 99%

“…6,8−10 Low-cost, chemically robust structures in doped (oxidized) states, high electrical conductivity, ease of fabrication in the form of films or uniform coatings, and ability to release and store charge via electrochemical reactions are the reasons for their widespread use in different storage devices. 11 Pseudocapacitor performances are controlled by Faradaic reactions on electrode materials. 12−14 Apart from ECPs, high surface area and highly conducting and porous carbon nanomaterials, such as reduced graphene oxide nanosheets (RGO), 15 activated carbon, 16 N-doped graphene, 17 functionalized carbon nanotubes, 18 and so on, are also used in supercapacitors.…”

Section: ■ Introductionmentioning

confidence: 99%

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Efficient Energy Storage by an Asymmetric Poly(3,4-propylenedioxythiophene)//CMK-3 Supercapacitor

Deshagani

Das

Nepak

et al. 2020

ACS Appl. Polym. Mater.

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Poly(3,4-propylenedioxythiophene) (PProDOT) and ordered mesoporous carbon (CMK-3) as positive and negative electrodes are assembled into an asymmetric supercapacitor (ASC), along with a gel electrolyte containing an ionic lqiuid, for the very first time. The advantages of PProDOT include charge storage by a Faradaic reaction, large electrical conductivity of 11 mS cm–1 in the doped state, robust microstructure that can endure long-term cycling, and ease of scale-up in the form of a thin coating. CMK-3 has the advantage of a porous meso-channelled morphology that enables rapid propagation of electrolyte ions with an effective surface area of 898 m2 g–1, maximizing electrical double layer formation, and a conductivity of ∼12 mS cm–1, which results in a wide operational voltage range of 2 V, an areal specific capacitance (SC) of 294 mF cm–2, an energy density of 0.16 to 0.11 mWh cm–2 at a power density of 0.86 to 3.98 mW cm–2, slow self-discharge rate, low leakage current, and a 98% SC retention after 5000 cycles for the PProDOT//CMK-3 ASC. The enhanced magnitudes of the performance metrics of the PProDOT//CMK-3 ASC in comparison to the inferior performance parameters for the symmetric counterparts (i.e., PProDOT//PProDOT and CMK-3//CMK-3) illustrate the benefits of an asymmetric cell architecture over a symmetric one. Demonstrations of powering a green LED and a digital thermometer with 3-ASCs connected in series show the utilitarian value of this device, for it is not only composed of nontoxic and low-cost components but also can be scaled up easily for the realization of large area supercapacitor devices.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Efficient Energy Storage by an Asymmetric Poly(3,4-propylenedioxythiophene)//CMK-3 Supercapacitor

Deshagani

Das

Nepak

et al. 2020

ACS Appl. Polym. Mater.

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“…Transition metal oxides (TMOs) and mixed metal oxides in particular, with three-dimensional (3D) hierarchical porous nanostructured morphologies, serve as efficient cathodes. − They afford (i) high electrical conduction, due to the multiple valence states of the metal ions and oxygen vacancies, (ii) large ion-accessible surface areas that maximize redox activity and consequently, SC, and (iii) short ion-diffusion lengths enabling fast ion uptake and release, beneficial for maintaining high specific power. Anodes in asymmetric supercapacitors are generally based on a carbon nanomaterial such as reduced graphene oxide (RGO), multiwalled carbon nanotubes (MWCNTs), activated carbon (AC) derived from biosources, and so forth. − …”

Section: Introductionmentioning

confidence: 99%

NiMoO₄@NiMnCo₂O₄ Heterostructure: A Poly(3,4-propylenedioxythiophene) Composite-Based Supercapacitor Powers an Electrochromic Device

Deshagani

Maity

Das

et al. 2021

ACS Appl. Mater. Interfaces

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The hierarchical heterostructure of NiMoO4@NiMnCo2O4 (NMO@NMCO) with furry structures of NMCO juxtaposed with NMO nanowires are endowed with multiple electrochemically active and accessible sites for ion storage, thus delivering an ultrahigh specific capacitance of 2706 F g–1, nearly two-fold times greater than that of sole NMCO. Electrodeposition of an overlayer of a highly robust and electrically conducting polymer, poly(3,4-propylenedioxythiophene) (PProDOT), not only improves the energy storage performance but also assists the binary oxide cathode in retaining its structural integrity during redox cycling. Coupling with an anode of porous flaky carbon (FC) derived from groundnut shells results in an asymmetric supercapacitor of FC//PProDOT@NiMoO4@NiMnCo2O4, which delivers an outstanding capacitance of 552 F g–1, energy and power density ranges of 172–40 Wh kg–1 and 0.75–10 kW kg–1, respectively, and a remarkable cycle life of 50 000 cycles, with ∼97.8% capacitance retention, over an operational voltage window of 1.5 V. From an application perspective, the charged supercapacitor was connected to a complementary coloring reversible electrochromic device (ECD) of Prussian blue//PProDOT, and the ECD state transformed from a pale-blue to a deep blue hue, thus signaling the efficient utilization of energy stored in the supercapacitor. The energy-saving attribute of the ECD was realized in terms of an integrated visible-light modulation of 39% that accompanied the optical transition. Deployment of low-cost devices at homes and commercial spaces, capable of storing and saving energy, is the way forward, and this is one significant step in this direction.

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“…The porosity distribution and surface area of biomass carbon materials play essential roles in most electrochemical energy storage and conversion devices, which are attributed to the materials' ion transporting channels and ion storage sites. It is necessary to activate the biomass carbon to enhance the surface area and porosity with some physical or chemical agents, such as steam [35], CO 2 [36], KOH [37], ZnCl 2 [38], and H 3 PO 4 [7]. Qiu et al [39] prepared a porous carbon material using corn straw biochar as the carbon material precursor.…”

Section: Introductionmentioning

confidence: 99%

MnO2/carbon nanocomposite based on silkworm excrement for high-performance supercapacitors

Zhang

Sun

et al. 2021

Int J Miner Metall Mater

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MnO 2 /biomass carbon nanocomposite was synthesized by a facile hydrothermal reaction. Silkworm excrement acted as a carbon precursor, which was activated by ZnCl 2 and FeCl 3 combining chemical agents under Ar atmosphere. Thin and flower-like MnO 2 nanowires were in-situ anchored on the surface of the biomass carbon. The biomass carbon not only offered high conductivity and good structural stability but also relieved the large volume expansion during the charge/discharge process. The obtained MnO 2 /biomass carbon nanocomposite electrode exhibited a high specific capacitance (238 F•g −1 at 0.5 A•g −1 ) and a superior cycling stability with only 7% degradation after 2000 cycles. The observed good electrochemical performance is accredited to the materials' high specific surface area, multilevel hierarchical structure, and good conductivity. This study proposes a promising method that utilizes biological waste and broadens MnO 2 -based electrode material application for next-generation energy storage and conversion devices.

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High energy density, robust and economical supercapacitor with poly(3,4-ethylenedioxythiophene)-CO2 activated rice husk derived carbon hybrid electrodes

Cited by 15 publications

References 34 publications

Efficient Energy Storage by an Asymmetric Poly(3,4-propylenedioxythiophene)//CMK-3 Supercapacitor

Efficient Energy Storage by an Asymmetric Poly(3,4-propylenedioxythiophene)//CMK-3 Supercapacitor

NiMoO₄@NiMnCo₂O₄ Heterostructure: A Poly(3,4-propylenedioxythiophene) Composite-Based Supercapacitor Powers an Electrochromic Device

MnO2/carbon nanocomposite based on silkworm excrement for high-performance supercapacitors

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High energy density, robust and economical supercapacitor with poly(3,4-ethylenedioxythiophene)-CO2 activated rice husk derived carbon hybrid electrodes

Cited by 15 publications

References 34 publications

Efficient Energy Storage by an Asymmetric Poly(3,4-propylenedioxythiophene)//CMK-3 Supercapacitor

Efficient Energy Storage by an Asymmetric Poly(3,4-propylenedioxythiophene)//CMK-3 Supercapacitor

NiMoO4@NiMnCo2O4 Heterostructure: A Poly(3,4-propylenedioxythiophene) Composite-Based Supercapacitor Powers an Electrochromic Device

MnO2/carbon nanocomposite based on silkworm excrement for high-performance supercapacitors

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NiMoO₄@NiMnCo₂O₄ Heterostructure: A Poly(3,4-propylenedioxythiophene) Composite-Based Supercapacitor Powers an Electrochromic Device