Enhanced Capacitance Retention in a Supercapacitor Made of Carbon from Sugarcane Bagasse by Hydrothermal Pretreatment

Wahid, Malik; Puthusseri, Dhanya; Phase, D.M.; Ogale, Satishchandra

doi:10.1021/ef500342d

Cited by 169 publications

(83 citation statements)

References 44 publications

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“…The rise of the I D /I G ratio for the KOH-activated carbon suggests that harsh chemical treatment disturbed the structural order of the carbon. However, the graphitization level of our activated carbon materials (I G /I D > 1.04) were significantly higher than the I G /I D ratio of commercially activated carbon (0.52) [11], indicating its suitability as an electrode material due to the excellent electrical conductivity. The high electrical conductivity of carbon derived from orange peel will reduce the charge-transfer resistance for the electrolyte ions and thus improve the electrochemical properties.…”

Section: Resultsmentioning

confidence: 61%

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Ranaweera

Kahol

Ghimire

et al. 2017

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Abstract:Interconnected hollow-structured carbon was successfully prepared from a readily available bio-waste precursor (orange peel) by pyrolysis and chemical activation (using KOH), and demonstrated its potential as a high-performing electrode material for energy storage. The surface area and pore size of carbon were controlled by varying the precursor carbon to KOH mass ratio. The specific surface area significantly increased with the increasing amount of KOH, reaching a specific surface area of 2521 m 2 /g for a 1:3 mass ratio of precursor carbon/KOH. However, a 1:1 mass ratio of precursor carbon/KOH displayed the optimum charge storage capacitance of 407 F/g, owing to the ideal combination of micro-and mesopores and a higher degree of graphitization. The capacitive performance varied with the electrolyte employed. The orange-peel-derived electrode in KOH electrolyte displayed the maximum capacitance and optimum rate capability. The orange-peel-derived electrode maintained above 100% capacitance retention during 5000 cyclic tests and identical charge storage over different bending status. The fabricated supercapacitor device delivered high energy density (100.4 µWh/cm 2 ) and power density (6.87 mW/cm 2 ), along with improved performance at elevated temperatures. Our study demonstrates that bio-waste can be easily converted into a high-performance and efficient energy storage device by employing a carefully architected electrode-electrolyte system.

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Section: Resultsmentioning

confidence: 61%

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Ranaweera

Kahol

Ghimire

et al. 2017

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“…It is worth noting that the I G /I D ratio for all the tea leaves samples was more than 1 (e.g., 1.09 for Tea-3 sample), which is higher than that of commercial activated carbon (I G /I D = 0.52). [29,30] Commercial graphene nanoplates showed an I G /I D value of 1.55. [30] I G /I D values of carbon derived from the tea leaves were higher than carbon derived from sugarcane bagasse and hemp.…”

Section: Resultsmentioning

confidence: 99%

“…[30] I G /I D values of carbon derived from the tea leaves were higher than carbon derived from sugarcane bagasse and hemp. [29,30] Results indicate that higher concentration of graphitic phase, which is the conducting phase of the carbon, could be beneficial for electrochemical charge-transfer by reducing series resistance and thus better energy storage performance can be expected.…”

Section: Resultsmentioning

confidence: 99%

“…The potential-time curves for the device at various current densities are shown in Figure 10c. Variation of specific capacitance as a function of current density showed a maximum specific capacitance of 0.64 F cm −2 at 1 mA cm −2 [40] B-commercial mesoporous activated carbon, [41] C-sugarcane activated carbon, [29] D-bamboo activated carbon, [12] E-phosphorus doped carbon, [41] F-sago bark activated carbon [42] ). …”

Section: Resultsmentioning

confidence: 99%

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Eco‐Friendly and High Performance Supercapacitors for Elevated Temperature Applications Using Recycled Tea Leaves

et al. 2017

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energy supply are required. Hence, an efficient local energy storage/production system plays a vital role for such applications. [1] The supercapacitor is one of the efficient energy storage systems which can store energy via electric double layer and faradic reactions. [2,3] The electric double layer capacitor (EDLC) stores the charge over the active surface area of the material and shows very durable performance over long period. [3,4] Thus, creating carbon with a high surface area could be one of the ways to improve the performance of EDLC-based supercapacitor devices. There are several publications documenting the utilization of waste-derived carbon source such as seeds, seed shells, leaves, bagasse, waste paper, and tyre. [5][6][7][8][9][10][11][12] Waste tea is an additional exciting source for carbon. [13] Most of the time, an activation step is required to achieve the high surface area to enhance the performance of the carbon. Activation of waste-derived carbon can be done using various methods including chemical, steam, and CO 2 -based activation. [14][15][16][17] For example, steam activated carbon from fir wood showed an activated surface area of 1131 m 2 g −1 while, CO 2 activated empty fruit bunches of palm showed a surface area of 1704 m 2 g −1 . [12,13] KOH activation is the most popular way to create high surface area and Used tea leaves are utilized for preparation of carbon with high surface area and electrochemical properties. Surface area and pore size of tea leaves derived carbon are controlled by varying the amount of KOH as activating agent. The maximum surface area of 2532 m 2 g −1 is observed, which is much higher than unactivated tea leaves (3.6 m 2 g −1 ). It is observed that the size of the electrolyte ions has a profound effect on the energy storage capacity. The maximum specific capacitance of 292 F g −1 is observed in 3 m KOH electrolyte with outstanding cyclic stability, while the lowest specific capacitance of 246 F g −1 is obtained in 3 m LiOH electrolyte at 2 mV s −1 . The tea leaves derived electrode shows almost 100% capacitance retention up to 5000 cycles of study. The symmetrical supercapacitor device shows a maximum specific capacitance of 0.64 F cm −2 at 1 mA cm −2 and about 95% of specific capacitance is retained after increasing current density to 12 mA cm −2 , confirming the high rate stability of the device. An improvement over 35% in the charge storage capacity is seen when increasing device temperature from 10 to 80 °C. The study suggests that used tea leaves can be used for the fabrication of environment friendly high performance supercapacitor devices at a low cost.

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“…[ 14 ] Production of such mesoporous carbon materials from inexpensive and renewable precursors such as biomass has attracted widespread attention in view of their growing application domains. [ 10,11,[15][16][17][18][19][20] Other precursors such as polymers have also been used to obtain mesoporous carbons with specifi c architectures for charge storage applications. [21][22][23][24] Since carbohydrates have carbon as their primary constituent, a carbohydrate containing biomass is a very good inexpensive source of functional carbon.…”

Section: Introductionmentioning

confidence: 99%

Highly Stable Laser‐Scribed Flexible Planar Microsupercapacitor Using Mushroom Derived Carbon Electrodes

Yadav

Basu

Suryawanshi

et al. 2016

Adv Materials Inter

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not well-suited with the planar geometry of most electronic devices. Hence, planar interdigitated microscale charge storage devices are gaining importance over conventional fl ip-chip devices. [1][2][3] Fabrication of such microscale electronic devices is a major challenge because the methods used have to be facile, effi cient, and compatible with those used in the other fl exible device fabrication protocols. Various techniques such as lithography, physical vapor deposition using shadow mask, sputtering, laser writing, etc., have been used to fabricate planar interdigitated microsupercapacitors till date. [4][5][6] Except the laser-based methods most other methods are somewhat complicated or time consuming. Of course, they do have specifi c advantages of concurrent wafer scale processing and scalability that cannot be underplayed. Laser-based device fabrication methods are however mostly single step, simple, and fast. Most of these have used laser power for the synthesis or direct writing of conducting carbon. [7][8][9] In this paper, we report an even simpler and faster method of device fabrication using fast CO 2 laser scribing of a layer of mushroom-synthesized conducting carbon to fabricate a planar microsupercapacitor on a fl exible substrate. This approach can be easily extended to other presynthesized forms of carbon for electrochemical doublelayer capacitors (EDLCs) or metal oxides/sulfi des for pseudocapacitors. We also point out that the mushroom-synthesized carbon in our case is formed by using a specifi c hydrothermal preprocessing protocol not used before and naturally renders few layer graphene-graphitic composite that offers the concurrent advantage of fl exibility and high conductivity. Mushroom has been used earlier as a precursor for carbon synthesis [ 10,11 ] but in these works precarbonization at low temperature of 500 °C was employed instead of hydrothermal preprocessing (used in the present work) before activation.Flexible planar microsupercapacitors have some serious issues like low energy density and low stability that limit its practical application. To improve the device performance, the quality of the electrode plays a signifi cant role. It has been reported that mesoporous carbon-based electrodes in EDLCs show great promise for microsupercapacitors both in terms of stability and energy density. [ 12 ] This type of material also offers A report is presented on the fabrication of all solid-state interdigitated fl exible microsupercapacitor using ultrafast and highly scalable laser scribing technique, using highly mesoporous carbon synthesized from biomass (mushroom) with hydrothermal preprocessing. The specifi c protocol used for carbon synthesis renders some unique property features to the material (surface area of 2604 m² g −1 with hierarchical pore size distribution) in the context of supercapacitor electrode application. A polyvinyl alcohol (PVA)-H 2 SO 4 gel electrolyte is used for electrochemical measurements. The microsupercapacitor shows high cyclic stability up to 15000 cycles....

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Enhanced Capacitance Retention in a Supercapacitor Made of Carbon from Sugarcane Bagasse by Hydrothermal Pretreatment

Cited by 169 publications

References 44 publications

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Orange-Peel-Derived Carbon: Designing Sustainable and High-Performance Supercapacitor Electrodes

Eco‐Friendly and High Performance Supercapacitors for Elevated Temperature Applications Using Recycled Tea Leaves

Highly Stable Laser‐Scribed Flexible Planar Microsupercapacitor Using Mushroom Derived Carbon Electrodes

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