Polyaniline-conjugated graphite–montmorillonite composite electrode prepared by in situ electropolymerization for supercapacitor applications

Rathnayake, Dananjali T.; Karunadasa, Kohobhange S. P.; Wijekoon, Apeksha S. K.; Manoratne, C.H.; Rajapakse, Rajapakse M. Gamini; Pitawala, H.M.T.G.A.

doi:10.1007/s11696-022-02646-7

Cited by 9 publications

(3 citation statements)

References 18 publications

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“…148,149 MMT is often used to combine with metal oxides (especially MnO 2 ), 148,149 hydroxides, 150 conductive polymers ( e.g. , PANI, polyvinylcarbazole (PVK), polycarbazole (PCz)), 151–154 porous carbon, 155 carbon nanotubes (CNTs), 151,156 and graphene/RGO 152,153,157 to prepare composite electrode materials for SCs. Earlier studies have revealed that the layered MMT endowed the composite SC electrodes with a highly porous structure, which enhanced the wettability of the electrolyte to the electrodes and facilitated charge transfer, thus leading to improved specific capacitance.…”

Section: Applications Of Mmt-based Materials In Eesmentioning

confidence: 99%

Montmorillonite-based materials for electrochemical energy storage

Wu,

He,

Zhao

et al. 2024

Green Chem.

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Section: Applications Of Mmt-based Materials In Eesmentioning

confidence: 99%

Montmorillonite-based materials for electrochemical energy storage

Wu,

He,

Zhao

et al. 2024

Green Chem.

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“…PANI is created when aniline monomers undergo oxidation at the anode surface during the electropolymerization process. An acidic electrolyte solution containing aniline and an oxidizing agent, such as ammonium persulfate or ferric chloride, is commonly used to conduct the oxidation process (Rathnayake et al, 2023).…”

Section: In Situ Electropolymerizationmentioning

confidence: 99%

Pani-Based Nanocomposites for Electrical Applications: A Review

et al. 2023

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Including supercapacitors, rechargeable batteries, and fuel cells, conducting polyaniline (PANI) has been widely used in electrochemical energy storage and conversion technologies due to its high conductivity, ease of synthesis, high flexibility, low cost, and distinctive redox properties. Because of its poor stability as a super-capacitive electrode, pure PANI cannot keep up with the rising demands for more N-active sites, better power/energy densities, and more stable molecular structures. These drawbacks as a super-capacitive electrode can be overcome by combining PANI with other active materials such as carbon compounds, metal compounds, and other conducting polymers (CPs). Recent PANI research focuses mainly on PANI-modified composite electrodes and supported composite electrocatalysts for fuel cells and rechargeable batteries, respectively. Due to the synergistic effect, PANI-based composites with various unique structures have shown superior electrochemical performance in supercapacitors, rechargeable batteries, and fuel cells. PANI typically functions as a conductive layer and network in different PANI-based composite structures. This review also discusses N-doped carbon materials produced from PANI because they are frequently employed as metal-free electrocatalysts for fuel cells. We conclude by providing a quick summary of upcoming developments and future research directions in PANI

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“…Furthermore, having a readily available photocatalyst that can be easily synthesized on a large scale is more important. The authors of the present study recently developed a novel composite preparation method based on mechanical compression and heat treatment, resulting in a stable binder-free graphite and clay composite electrode [21][22][23][24][25]. Following a similar technique, authors recently developed efficient binary photocatalysts that are composed of raw materials, including TiO2 and clay (kaolinite/MMT), resulting in improved photocatalytic activity and mechanical strength [26,27].…”

Section: Introductionmentioning

confidence: 99%

Low-cost ternary composite photocatalysts consisting of TiO2, kaolinite and cement for an efficient organic waste decontamination in water

Karunadasa,

Madhushanka,

Manoratne

2024

J. Polym. Sci. Eng.

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The present study demonstrates the fabrication of heterogeneous ternary composite photocatalyst consisting of TiO2, kaolinite and cement (TKCe), which is essential to overcome the practical barriers that are inherent to currently available photocatalysts. TKCe is prepared via a cost-effective method, which involved the mechanical compression and thermal activation as a major fabrication steps. Clay-cement ratio primarily determines TKCe mechanical strength and photocatalytic efficiency where TKCe with the optimum clay-cement ratio, which is 1:1 results in uniform matrix with fewer surface defects. The composites that have clay-cement ratio below or above the optimum ratio account for comparatively low mechanical strength and photocatalytic activity due to inhomogeneous surface with more defects, including particle agglomeration and cracks. The TKCe mechanical strength is mainly from clay-TiO2 interactions and TiO2-cement interactions. TiO2-cement interactions result in CaTiO3 formation, which significantly increases matrix interactions; however, the maximum composite performance is observed at the optimum titanate level; anything above or below this level deteriorates composite performance. Over 90% degradation rates are characteristic to all TKCe, which follow pseudo first order kinetics in methylene blue decontamination. The highest rate constant is observed with TKCe 1-1, which is 1.57 h−1 and being the highest among all the binary composite photocatalyst that were fabricated previously. The TKCe 1-1 accounts for the highest mechanical strength, which is 6.97 MPa, while the lowest is observed with TKCe 3-1, indicating that clay-cement ratio has direct relation to composite strength. TKCe is a potential photocatalyst, which can be obtained in variable sizes and shapes, complying with real industrial wastewater treatment requirements.

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Polyaniline-conjugated graphite–montmorillonite composite electrode prepared by in situ electropolymerization for supercapacitor applications

Cited by 9 publications

References 18 publications

Montmorillonite-based materials for electrochemical energy storage

Montmorillonite-based materials for electrochemical energy storage

Pani-Based Nanocomposites for Electrical Applications: A Review

Low-cost ternary composite photocatalysts consisting of TiO2, kaolinite and cement for an efficient organic waste decontamination in water

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