Low cost, high performance supercapacitor electrode using coconut wastes: eco-friendly approach

A, Divyashree; Manaf, Shoriya Aruni Abdul; Yallappa, S.; Chaitra, K.; Nagaraju, Kathyayini; Hegde, Gurumurthy

doi:10.1016/j.jechem.2016.08.002

Cited by 72 publications

(6 citation statements)

References 71 publications

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“…The inset of Figure 4e depicts the first and last five cycles for comparative reasons. Such results are significantly better than those obtained from similar carbon-based materials such as sugar cane bagasse [64], sunflower stalk [65], rice husk [66], or coconut waste [67]. The ability of the C-Flax sample to serve as a material suitable for supercapacitor application is also illustrated by the Ragone plot (Figure 4f).…”

Section: Electrochemical Characterizationmentioning

confidence: 84%

Flax-Derived Carbon: A Highly Durable Electrode Material for Electrochemical Double-Layer Supercapacitors

et al. 2021

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Owing to their low cost, good performance, and high lifetime stability, activated carbons (ACs) with a large surface area rank among the most popular materials deployed in commercially available electrochemical double-layer (EDLC) capacitors. Here, we report a simple two-step synthetic procedure for the preparation of activated carbon from natural flax. Such ACs possess a very high specific surface area (1649 m2 g–1) accompanied by a microporous structure with the size of pores below 2 nm. These features are behind the extraordinary electrochemical performance of flax-derived ACs in terms of their high values of specific capacitance (500 F g–1 at a current density of 0.25 A g–1 in the three-electrode setup and 189 F g–1 at a current density of 0.5 A g–1 in two-electrode setup.), high-rate stability, and outstanding lifetime capability (85% retention after 150,000 charging/discharging cycles recorded at the high current density of 5 A g–1). These findings demonstrate that flax-based ACs have more than competitive potential compared to standard and commercially available activated carbons.

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Section: Electrochemical Characterizationmentioning

confidence: 84%

Flax-Derived Carbon: A Highly Durable Electrode Material for Electrochemical Double-Layer Supercapacitors

et al. 2021

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“…The carbonized coconut husk exhibited a relatively small surface area, a common characteristic in lignocellulosic materials. This phenomenon is attributed to particle aggregation and unchanged porosity, resulting in smooth surfaces [53]. As shown in Figure 3a, the adsorption/desorption curves of CC revealed a Type II isotherm typical for macroporous materials, with an average pore size of 42.7 nm.…”

Section: Pore Structure Characterization Via the Bet Analyses Of CC A...mentioning

confidence: 88%

Polyaniline Composites Containing Eco-Friendly Biomass Carbon from Agricultural-Waste Coconut Husk for Enhancing Gas Sensor Performance in Hydrogen Sulfide Detection

Luo,

Yan,

Hung

et al. 2023

Polymers

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Hydrogen sulfide, a colorless, flammable gas with a distinct rotten egg odor, poses severe health risks in industrial settings. Sensing hydrogen sulfide is crucial for safeguarding worker safety and preventing potential accidents. This study investigated the gas-sensing performance of an electroactive polymer (i.e., polyaniline, PANI) and its composites with active carbon (AC) (i.e., PANI-AC1 and PANI-AC3) toward H2S at room temperature. PANI-AC composites-coated IDE gas sensors were fabricated and their capability of detecting H2S at concentrations ranging from 1 ppm to 30 ppm was tested. The superior gas-sensing performance of the PANI-AC composites can be attributed to the increased surface area of the materials, which provided increased active sites for doping processes and enhanced the sensing capability of the composites. Specifically, the incorporation of AC in the PANI matrix resulted in a substantial improvement in the doping process, which led to stronger gas-sensing responses with higher repeatability and higher stability toward H2S compared to the neat PANI-coated IDE sensor. Furthermore, the as-prepared IDE gas sensor exhibited the best sensing response toward H2S at 60% RH. The use of agricultural-waste coconut husk for the synthesis of these high-performance gas-sensing materials promotes sustainable and eco-friendly practices while improving the detection and monitoring of H2S gas in industrial settings.

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“…[7][8][9]. Even though bio-waste derived activated carbon has many merits and is sustainable material for the long run energy storage, it still has some drawbacks like variability in feedstock (bio-source) quality, di culty in controlling the pore size structure, basically having reduced surface area, probability of containing ash with longer scalability and environmental regulatory problem with authentic certi cation challenge [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Nanoarchitectonics of Zanthoxylum armatum DC. Seed Derived Zinc Chloride Activated Carbon as Negatrode Material for Supercapacitor Applications

Bhattarai,

Shrestha,

Homagai

et al. 2024

Preprint

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The storage of green and renewable forms of energy from clean sources has gained considerable attention in the academic as well as industrial arena in the context of ongoing terrible global climatic change. Commonly used carbon nanomaterials are inadequate to address the demand for high-performance energy storage devices due to their high cost, processing difficulties and chances of toxicity. Consequently, facile bio-mass-derived activated carbon is getting more attention due to its high carbon content, more abundant in nature and easiness of processing with minimum toxicity. Here, in this study, we introduced a simple, sustainable approach for the synthesis of ZnCl2 activated hierarchical 3D network mesoporous/microporous Zanthoxylum armatum DC. carbon materials from its precarbonized seed powder at 600, 800 and 1000 °C, respectively. Physicochemical characterization of as-prepared materials was assessed by well-known standard techniques, and energy storage ability was studied in a three-electrode configuration. The electrochemical performance of different sample of zinc chloride activated carbon (ZAC-1000, ZAC-800 and ZAC-600) were compared. ZAC-1000 electrode exhibited the best gravimetric capacitance of 133 F g-1 in 1 A g-1 with 97.9 % cyclic stability at 10,000 cycles and ~50% rate capability. Based on the findings, highly efficient negative electrode (Negatrode) materials for supercapacitor applications synthesized from the bio-waste seed of Zanthoxylum armatum DC. could be useful for commercial applications.

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Low cost, high performance supercapacitor electrode using coconut wastes: eco-friendly approach

Cited by 72 publications

References 71 publications

Flax-Derived Carbon: A Highly Durable Electrode Material for Electrochemical Double-Layer Supercapacitors

Flax-Derived Carbon: A Highly Durable Electrode Material for Electrochemical Double-Layer Supercapacitors

Polyaniline Composites Containing Eco-Friendly Biomass Carbon from Agricultural-Waste Coconut Husk for Enhancing Gas Sensor Performance in Hydrogen Sulfide Detection

Nanoarchitectonics of Zanthoxylum armatum DC. Seed Derived Zinc Chloride Activated Carbon as Negatrode Material for Supercapacitor Applications

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