Super-activated biochar from poultry litter for high-performance supercapacitors

Pontiroli, Daniele; Scaravonati, Silvio; Magnani, Giacomo; Fornasini, Laura; Bersani, Danilo; Bertoni, Giovanni; Milanese, Chiara; Girella, Alessandro; Ridi, Francesca; Verucchi, Roberto; Mantovani, Luciana; Malcevschi, Alessio; Riccò, Mauro

doi:10.1016/j.micromeso.2019.05.002

Cited by 69 publications

(11 citation statements)

References 55 publications

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“…ACs with a specific surface area of >3000 m 2 g −1 are now available on the market and can be employed as the electrode active material. Those provided a very high gravimetric specific capacitance of 209-575 F g −1 under the use of aqueous electrolytes [6,10,11] and that of 144-338 F g −1 under the use of nonaqueous electrolytes [5,12,13]. Microporous ACs with a narrow width of <2 nm can produce a wide electric double-layer and thus give the electrode a high specific capacitance [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ball Milling on the Electrochemical Performance of Activated Carbon with a Very High Specific Surface Area

et al. 2020

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Activated carbon (AC) with a very high specific surface area of >3000 m2 g−1 and a number of course particles (average size: 75 µm) was pulverized by means of planetary ball milling under different conditions to find its greatest performances as the active material of an electric double-layer capacitor (EDLC) using a nonaqueous electrolyte. The variations in textural properties and particle morphology of the AC during the ball milling were investigated. The electrochemical performance (specific capacitance, rate and cyclic stabilities, and Ragone plot, both from gravimetric and volumetric viewpoints) was also evaluated for the ACs milled with different particle size distributions. A trade-off relation between the pulverization and the porosity maintenance of the AC was observed within the limited milling time. However, prolonged milling led to a degeneration of pores within the AC and a saturation of pulverization degree. The appropriate milling time provided the AC a high volumetric specific capacitance, as well as the greatest maintenance of both the gravimetric and volumetric specific capacitance. A high volumetric energy density of 6.6 Wh L−1 was attained at the high-power density of 1 kW L−1, which was a 35% increment compared with the nonmilled AC. The electrode densification (decreased interparticle gap) and the enhanced ion-transportation within the AC pores, which were attributed to the pulverization, were responsible for those excellent performances. It was also shown that excessive milling could degrade the EDLC performances because of the lowered micro- and meso-porosity and the excessive electrode densification to restrict the ion-transportation within the pores.

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Section: Introductionmentioning

confidence: 99%

Effect of Ball Milling on the Electrochemical Performance of Activated Carbon with a Very High Specific Surface Area

et al. 2020

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“…Biomass constitutes all organic matter from plants, 15,16 animals, 17,18 microorganisms, 19,20 including the by-products and metabolites produced by such organisms present in the biosphere. 21,22 Global biomass consists of nearly 550 gigaton of carbon, of which around 80% represent plant sources followed by 15% of bacteria and remaining 10% are animals, fungi and viruses.…”

Section: Importance Of Biomass and Waste Materialsmentioning

confidence: 99%

Recent advancement of biomass-derived porous carbon based materials for energy and environmental remediation applications

et al. 2022

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“…For instance, a symmetrical coin cell of nanoporous carbon synthesized from jute sticks, as a waste bio-mass source, exhibited a maximum cell capacitance of 80 F g -1 at 0.5 A g -1 in an aqueous 6 M KOH electrolyte [34]. Hierarchicallyporous carbon obtained from organic waste having very high surface area of 3000 m 2 g -1 delivered a cell capacitance of 200 F g -1 at a current density of 0.5 A g -1 [35]. A symmetric cell consisting of nitrogen doped porous carbon obtained from the pyrolysis of the bark of a plant delivered a SC of 130 F g -1 at a current density of 0.5 A g -1 [33].…”

Section: Comparative Analysis Of Symmetric Supercapacitorsmentioning

confidence: 99%

Holey graphitic carbon nano-flakes with enhanced storage characteristics scaled to a pouch cell supercapacitor

Ojha

Liu

et al. 2021

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Supercapacitors with holey graphitic carbon nano-flakes (HGCNF) capable of demonstrating large specific capacitance (SC) have been developed for the first time. The unique approach of applying an additional conducting layer of carbon fabric (CF) coated with HGCNF at both half-cells provides a significant enhancement in SC, from 323 to 1142 F g -1 , for the half cell and from 8 to 487 F g -1 for the symmetric supercapacitor, when the architecture is modified from Ni/HGCNF//HGCNF/Ni to Ni/HGCNF/CF/HGCNF//HGCNF/CF/HGCNF/Ni. HGCNF is composed of macro-and meso-pores enabling facile and deep penetration of electrolyte ions across the cross-section, ensuring maximum utilization at high current densities. Peak energy and power densities of 68 Wh kg -1 and 2.5 kW kg -1 , achieved for the Ni/HGCNF/CF/HGCNF//HGCNF/CF/HGCNF/Ni cell, are superior to many reported nanocarbons, including HGCNF/Ni or HGCNF/CF symmetric cells. The corresponding 3 V pouch cell, showed an excellent SC of 80 F g -1 .

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Super-activated biochar from poultry litter for high-performance supercapacitors

Cited by 69 publications

References 55 publications

Effect of Ball Milling on the Electrochemical Performance of Activated Carbon with a Very High Specific Surface Area

Effect of Ball Milling on the Electrochemical Performance of Activated Carbon with a Very High Specific Surface Area

Recent advancement of biomass-derived porous carbon based materials for energy and environmental remediation applications

Holey graphitic carbon nano-flakes with enhanced storage characteristics scaled to a pouch cell supercapacitor

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