The effect of CO2 activation temperature on the physical and electrochemical properties of activated carbon monolith from banana stem waste

Taer, Erman; Susanti, Yulia; Awitdrus,; Sugianto, Sugianto; Taslim, Rika; Setiadi, Rahmondia Nanda; Bahri, Syaiful; Agustino,; Dewi, P.; Kurniasih, B.

doi:10.1063/1.5021209

Cited by 30 publications

(13 citation statements)

References 4 publications

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“…In general, the density of the SL-Precursor and SL-800 monolith samples degraded after the pyrolysis process via carbonization and physical activation from 0.9163 g cm -3 and 0.8641 g cm -3 to 0.7424 and 0.6105 g cm -3 with a mean standard deviation of ±0.061. The density value obtained in this study is almost the same as several other studies that have been previously reported, especially the material from coconut husk [18], pineapple leaves [19], and banana stem [20]. The decrease in the density value initiates relatively better pore formation through carbonization and high-temperature physical activation [21].…”

Section: Resultssupporting

confidence: 87%

Conversion of Salam leaves (Syzygium polyanthum (Wight) Walp.) bio-kitchen waste as functional activated carbon for sustainable supercapacitor electrodes

Windasari

Taslim

2022

J. Phys.: Conf. Ser.

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Porous carbon based on bio/organic waste is a very popular raw material used in high-level applications due to its advantages of high porosity, high electrical conductivity, suitable pore structure, and good stability. In this study, bio-kitchen waste is used as a precursor to obtaining high functional activated carbon which is applied to electrochemical energy storage applications. This kitchen waste is focused on Salam leaves (Syzygium polyanthum (Wight) Walp.). Precursors are converted to porous carbon through a simple technique and a green approach without the addition of synthetic materials. In addition, activated carbon is designed in a new form of monolith without a binder. The material properties were thoroughly investigated through monolith dimension reduction and X-ray diffraction. The dimensions of the monolith are reviewed based on mass, thickness, and diameter. The activated carbon obtained shows porosity and amorphous properties which are useful in supporting its electrochemical natures. Furthermore, the electrochemical properties of carbon electrodes were reviewed using standard cyclic voltammetry and galvanostatic charge-discharge methods in a two-electrode system. In addition, a 1M H2SO4 aqueous electrolyte was selected to enhance the supercapacitor cell performance and it exhibit high specific capacitance of 145 F g−1. Based on these results, it is surprising that bio-kitchen waste has great potential as a high-carbon material for high-level applications.

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Section: Resultssupporting

confidence: 87%

Conversion of Salam leaves (Syzygium polyanthum (Wight) Walp.) bio-kitchen waste as functional activated carbon for sustainable supercapacitor electrodes

Windasari

Taslim

2022

J. Phys.: Conf. Ser.

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“…The gravimetric capacitances are ≈143 F g –1 , which is comparable to other porous carbon materials activated by CO 2 . [ 47–49 ] As predicted from the BET surface areas, 3D‐CL‐A82% has a higher gravimetric capacitance than 3D‐CL‐A16% and 3D‐CL‐A66% because of its higher specific BET surface area. However, the areal capacitance of 3D‐CL‐A82% is lower than that of 3D‐CL‐A66%, which can be explained by the difference in mass loading.…”

Section: Resultsmentioning

confidence: 99%

Macro‐ and Nano‐Porous 3D‐Hierarchical Carbon Lattices for Extraordinarily High Capacitance Supercapacitors

Katsuyama

Haba

Kobayashi

et al. 2022

Adv Funct Materials

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Supercapacitors, which can be charged/discharged rapidly, play important roles in a sustainable society. Thick electrodes can reduce the ratio of inactive components in the overall cell while simultaneously improving energy and power densities. However, thick electrodes induce longer ion diffusion pathways, and capacitance drops dramatically after a certain thickness. To overcome this, precisely designed macro-and nano-porous 3D-hierarchical carbon lattices, where ions can diffuse freely inside the electrode, are prepared by combining an inexpensive stereolithography-type 3D printer, whose resolution is 50 µm, with a simple CO 2 activation process. The activated 3D carbon lattice with a 66% burn-off ratio (3D-CL-A66%) has ordered macropores (≈150 µm) and uniform nanopores (2-3 nm), exhibiting a maximum areal capacitance of 5251 mF cm -2 at 3 mA cm -2 . Furthermore, manganese oxide is electrochemically deposited on 3D-CL-A16% for 8 min (3D-CL-A16%-MnO 2 -8 min), increasing the areal capacitance by 2.5-times. Finally, an all-3D-printed asymmetric 1.8 V supercapacitor is prepared by combining 3D-CL-A16%-MnO 2 -8 min and 3D-CL-A66% as the positive and negative electrodes, respectively, demonstrating a maximum energy density of 0.808 mWh cm -2 at a power density of 2.48 mW cm -2 . The achieved values are one of the highest areal energy and power densities reported so far.

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“…one-stage integrated pyrolysis is a process of heating carbon monolith to a high temperature of up to 900 °C. This process consists of carbonization to a temperature of 600 °C in an N2 gas environment followed by physical activation to a temperature of 850 °C in a CO2 gas environment [24]. The carbonization process causes the evaporation of volatile compounds and elements other than carbon in the sample which indicates the creation of empty spaces or pores so that the electrode mass is reduced.…”

Section: Resultsmentioning

confidence: 99%

High potential of yellow potato (Solanum Tuberosum L.) peel waste as porous carbon source for supercapacitor electrodes

Pertiwi

Yantі

Taslim

2022

J. Phys.: Conf. Ser.

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Yellow potato peel contains chemical components such as protein, fiber, starch and sugar which is composed atom carbon chains bonding. Heating potato peel at high temperatures can disrupt the bonding of the carbon atoms of the constituents, vaporizing volatile compounds, thereby producing high carbon fixed. This study preparation yellow potato peel-based carbon electrodes through a single-stage integrated pyrolysis with carbonization from room temperature to 600 °C in N2 gas atmosphere followed by physical activation to a temperature of 850°C in CO2 gas environment. The impregnation of ZnCl2 at different concentrations was optimized as an independent variable precursor to produce porous activated carbon for energy storage devices. The difference in concentration of 0.1M, 0.3M and 0.5M ZnCl2 can increase the porosity, structure of amorphous carbon and the resulting high electrochemical performance. Electrochemical properties were characterized using cyclic voltammetry and galvanostatic charge discharge methods in an aqueous electrolyte of 1M H2SO4 at a voltage of 0-1000 mV and a scanning rate of 1 mV s−1. Furthermore, the resulting specific capacitance increased from 82.82 F g−1, 195.66 F g−1 and 147.03 F g−1 based on the effect of the concentration of the chemical activator ZnCl2. While the specific capacitance obtained using the GCD method shows higher numbers, namely 145.13 F g−1, 223.25 F g−1 and 174.08 F g−1. Energy density 27.18 Wh kg−1 and power density 97.93 W kg−1 from cv method. The simple approach of activated carbon from potato peel waste is expected to produce an economical and simple porous carbon electrode for high performance energy storage application.

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The effect of CO2 activation temperature on the physical and electrochemical properties of activated carbon monolith from banana stem waste

Cited by 30 publications

References 4 publications

Conversion of Salam leaves (Syzygium polyanthum (Wight) Walp.) bio-kitchen waste as functional activated carbon for sustainable supercapacitor electrodes

Conversion of Salam leaves (Syzygium polyanthum (Wight) Walp.) bio-kitchen waste as functional activated carbon for sustainable supercapacitor electrodes

Macro‐ and Nano‐Porous 3D‐Hierarchical Carbon Lattices for Extraordinarily High Capacitance Supercapacitors

High potential of yellow potato (Solanum Tuberosum L.) peel waste as porous carbon source for supercapacitor electrodes

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