Three-dimensional network of poly(3,4-ethylenedioxythiophene)/nanocrystalline cellulose/cobalt oxide for supercapacitor

Teng, Lim Pei; Azman, Nur Hawa Nabilah; Kulandaivalu, Shalini; Sulaiman, Yusran

doi:10.1016/j.polymer.2022.124888

Cited by 11 publications

(6 citation statements)

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“…As expected, the pure CNC aerogel experienced an inferior mechanical property due to the weak physical bonding among the CNC nanoparticles (Figure a–c). The inferior mechanical character of pure CNC aerogels has been known in this field. , It is evident that the maximum compressive stress dramatically increased with increasing PEDOT concentration. It can be observed that C3P1 had the highest compressive strength and Young’s modulus of 1.85 and 6.98 MPa, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The inferior mechanical character of pure CNC aerogels has been known in this field. 28,54 It is evident that the maximum compressive stress dramatically increased with increasing PEDOT concentration. It can be observed that C3P1 had the highest compressive strength and Young's modulus of 1.85 and 6.98 MPa, respectively.…”

Section: Mechanical and Thermal Insulation Performancesmentioning

confidence: 97%

“…The formation of strong interfacial interactions between CNC functional groups and those of DBSA and PEDOT, as well as the denser porosity of C3P1, could account for such behavior. 54 Compared with previously reported cellulosic aerogels, the C3P1 aerogel presented in this study illustrated superior mechanical performance, low density, and appreciable porosity (Figure 4c−e).…”

Section: Mechanical and Thermal Insulation Performancesmentioning

confidence: 99%

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Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Amini,

Hosseini,

Dutta

et al. 2023

ACS Appl. Mater. Interfaces

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Technological fusion of emerging three-dimensional (3D) printing of aerogels with gel processing enables the fabrication of lightweight and functional materials for diverse applications. However, 3D-printed constructs via direct ink writing for fabricating electrically conductive structured biobased aerogels suffer several limitations, including poor electrical conductivity, inferior mechanical strength, and low printing resolution. This work addresses these limitations via molecular engineering of conductive hydrogels. The hydrogel inks, namely, CNC/PEDOT-DBSA, featured a unique formulation containing well-dispersed cellulose nanocrystal decorated by a poly(3,4-ethylene dioxythiophene) (PEDOT) domain combined with dodecylbenzene sulfonic acid (DBSA). The rheological properties were precisely engineered by manipulating the solid content and the intermolecular interactions among the constituents, resulting in 3D-printed structures with excellent resolution. More importantly, the resultant aerogels following freeze-drying exhibited a high electrical conductivity (110 ± 12 S m–1), outstanding mechanical properties (Young’s modulus of 6.98 MPa), and fire-resistance properties. These robust aerogels were employed to address pressing global concerns about electromagnetic pollution with a specific shielding effectiveness of 4983.4 dB cm2 g–1. Importantly, it was shown that the shielding mechanism of the 3D printed aerogels could be manipulated by their geometrical features, unraveling the undeniable role of additive manufacturing in materials design.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical and Thermal Insulation Performancesmentioning

confidence: 97%

Section: Mechanical and Thermal Insulation Performancesmentioning

confidence: 99%

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Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Amini,

Hosseini,

Dutta

et al. 2023

ACS Appl. Mater. Interfaces

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“…Some strategies in the synthesis methodologies include increasing more electroactive sites to generate more Faradaic reactions and improve the electrochemical performance. , Bimetallic oxide compounds (e.g., Ni–Co, Mn–Co, Co–Ru, and Co–V), , trimetallic or higher order metal oxides and core–shell structures of oxides, − are attractive since they can introduce structural defects, undergo additional fast redox reactions, and provide higher electrical conductivity compared to monometallic oxides. , Regarding CoV oxides, recently, several studies with interesting morphologies and capacitances have been reported, for instance, Co 3 V 2 O 8 nanoplates, Co 3 V 2 O 8 porous rose-like structures, Co 2 V 2 O 7 ·3H 2 O microflowers, CoV 2 O 6 micron blocks, and Co 3 V 2 O 8 nanoparticles. , All these mentioned bimetallic materials show morphological, structural, and compositional differences adopting different charge storage mechanisms. However, despite this observation, scarce information is available on the influence of compositional variation of Co and V on the storage mechanism and its capacitance, the latter is the aim of this article.…”

Section: Introductionmentioning

confidence: 99%

“…Some strategies in the synthesis methodologies include increasing more electroactive sites to generate more Faradaic reactions and improve the electrochemical performance. 10 , 11 Bimetallic oxide compounds (e.g., Ni–Co, Mn–Co, Co–Ru, and Co–V), 12 , 13 trimetallic 14 or higher order metal oxides and core–shell structures of oxides, 15 − 17 are attractive since they can introduce structural defects, undergo additional fast redox reactions, and provide higher electrical conductivity compared to monometallic oxides. 18 , 19 Regarding CoV oxides, recently, several studies with interesting morphologies and capacitances have been reported, for instance, Co 3 V 2 O 8 nanoplates, 18 Co 3 V 2 O 8 porous rose-like structures, 20 Co 2 V 2 O 7 ·3H 2 O microflowers, 21 CoV 2 O 6 micron blocks, 22 and Co 3 V 2 O 8 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Molar Ratio of Co and V in Bimetallic Oxides on Their Pseudocapacitive Properties

et al. 2022

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Bimetallic oxides have significant attraction as supercapacitor electrode materials due to their highly reversible redox processes, which are commonly associated with their surface chemistry and morphological features. Here, we report the synthesis, characterization, and electrochemical evaluation of bimetallic oxides with different molar compositions of Co and V (Co 0.6 V 0.4 , Co 0.64 V 0.36 , Co 0.68 V 0.32 , and Co 0.7 V 0.3 denoted as S1, S2, S3, and S4 samples, respectively). The materials were synthesized by a modified solvothermal method using glycerol as a stabilizing agent, characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, scanning electron microscopy−energy-dispersive X-ray spectroscopy, X-ray fluorescence spectroscopy, N 2 adsorption isotherms, cyclic voltammetry, and galvanostatic charged/discharged in a three-electrode cell. The role of the CoV oxide compositions on the pseudocapacitive properties was studied through the analysis of the energy storage mechanism following the power law and Dunn's methodology to obtain the b values. An important finding of this work is that CoV oxides exhibited electrochemical characteristics of a pseudocapacitive electrode material even though the charge storage occurs in bulk. This behavior is consistent with the pseudocapacitance generated by redox processes, showing b values of 0.67, 0.53, 0.75, and 0.84, with a capacitive current contribution of 74, 74, 63, and 70% analyzed at a scan rate of 1 mV s −1 , for S4, S3, S2, and S1 samples, respectively. Co 0.7 V 0.3 (S4) oxide presented the highest specific capacitance of 299 F g −1 at 0.5 A g −1 with a Coulombic efficiency of 93% tested at 4 A g −1 . The better electrochemical performance of this sample was attributed to the synergistic effect of the Co and V atoms since a minimum amount of V in the structure may distort the crystal lattice and improve the electrolyte diffusion, in addition to the formation of several oxidation states due to reduction of V 5+ , including V 3+ and V 4+ as well as to the formation of the metastable V 4 O 9 .

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Tailoring a Multifunctional PEDOT/Co₃O₄‐CeO₂ Composite for Sustainable Energy Applications

Varghese,

Devi K R

2024

Advanced Sustainable Systems

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Energy sources play a crucial role in the development of the society. The gargantuan depletion of fossil fuels creates new glitches in the routine activities of human beings. Electrocatalysts can efficiently produce and store energy and, therefore, have the potential to alleviate this situation. A multifunctional electrocatalyst, Poly (3,4‐ethylenedioxythiophene)/cobalt oxide‐cerium oxide(PEDOT/Co3O4‐CeO2), is synthesized by incorporating mixed metal oxide to 3,4‐ethylenedioxythiophene (EDOT) using the in situ chemical oxidative polymerization method and is employed for both energy production and storage applications. The successful synthesis of the catalyst is confirmed through various characterization techniques. The composite shows a specific capacity of 617.8 C g−1 and a specific capacitance value of 1298.1 F g−1. The hydrogen evolution reaction (HER) analysis shows that the composite requires a low overpotential of 163.1 mV at a current density of 10 mA cm−2. Synthesized electrocatalysts can effectively handle the energy related issues prevailing in the society.

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Three-dimensional network of poly(3,4-ethylenedioxythiophene)/nanocrystalline cellulose/cobalt oxide for supercapacitor

Cited by 11 publications

References 50 publications

Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Influence of the Molar Ratio of Co and V in Bimetallic Oxides on Their Pseudocapacitive Properties

Tailoring a Multifunctional PEDOT/Co₃O₄‐CeO₂ Composite for Sustainable Energy Applications

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Three-dimensional network of poly(3,4-ethylenedioxythiophene)/nanocrystalline cellulose/cobalt oxide for supercapacitor

Cited by 11 publications

References 50 publications

Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels

Influence of the Molar Ratio of Co and V in Bimetallic Oxides on Their Pseudocapacitive Properties

Tailoring a Multifunctional PEDOT/Co3O4‐CeO2 Composite for Sustainable Energy Applications

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Product

Resources

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Tailoring a Multifunctional PEDOT/Co₃O₄‐CeO₂ Composite for Sustainable Energy Applications