Sponge-like nanoporous activated carbon from corn husk as a sustainable and highly stable supercapacitor electrode for energy storage

Lobato-Peralta, Diego Ramón; Duque-Brito, Estefanía; Orugba, Henry Oghenero; Arias, Dulce M.; Cuentas-Gallegos, Ana Karina; Okolie, Jude A.; Okoye, Patrick U.

doi:10.1016/j.diamond.2023.110176

Cited by 22 publications

(3 citation statements)

References 65 publications

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“…The specific capacitance, energy density, and power density of ACRS‐700//ACRS‐700 SSC using [Bu 4 N + ][NO 3 − ] IL as electrolyte are higher than most reported in literature (Table 2). 20,26,31,53‐57 …”

Section: Resultsmentioning

confidence: 99%

A comparative study on porous activated carbon derived from waste biomass with varying oxygen functionalities as supercapacitor electrodes

Atika,

Dutta

2023

Energy Storage

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Activated carbon derived from biomasses with different oxygen‐bearing chemical constituents has been explored as supercapacitor electrode. The rice straw (RS) and eucalyptus wood biomasses were selected owing to their contrasting composition of cellulose, hemicellulose, and lignin contents. The activated carbons of these biomasses are obtained by pyrolysis at 550°C followed by thermal activation (700°C) after treatment with optimized KOH. The specific capacitance of RS‐based activated carbon (ACRS‐700), measured from galvanostatic charging‐discharging studies at 0.5 A g−1, is much higher (eg, 365 F g−1) than that of ACEW‐700 (168 F g−1). The higher specific capacitance of ACRS‐700 is attributable to: (i) significantly higher surface area (3345 m2 g−1) comprising of interconnected micro‐ and mesoporous structure; (ii) porosity of about 2.0 cm3/g; and (iii) oxygen‐rich hemicellulose contents. The possible charge storage mechanism in ACRS‐700 has been discussed. The real‐time application of ACRS‐700 has been demonstrated by lighting up red LEDs using ACRS‐700//ACRS‐700 symmetric supercapacitor device, operated with aqueous and freshly synthesized [Bu4N+][NO3−] ionic liquid as electrolytes. The maximum energy density (42.7 Wh kg−1) and the power density (1.9 kW kg−1) for ionic liquid electrolyte are favourable for supercapacitor applications.

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Section: Resultsmentioning

confidence: 99%

A comparative study on porous activated carbon derived from waste biomass with varying oxygen functionalities as supercapacitor electrodes

Atika,

Dutta

2023

Energy Storage

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“…The rational utilization of biological resources contributes to energy conservation and enhances the value of these resources, making them excellent precursors for supercapacitors. Due to their unique chemical compositions and structural characteristics, numerous bio-derived carbon materials, including seafood shells [9], flowers [10], mushrooms [11], straw [12], cellulose nanocrystals [13], blackberry seeds [14], et al [15], are currently being applied in the new energy field. To detail, the N, S, P, and O heteroatoms in the carbon matrix from the bio-derived precursors can change the neighboring C-C bond polarity to improve the wettability and conductivity of the carbon surface [4,16].…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Carbon Materials Derived from Zanthoxylum Bungeanum Peel and Seed for Electrochemical Supercapacitors

Jia,

Wang,

Wang

et al. 2024

Nanomaterials

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In order to prepare biomass-derived carbon materials with high specific capacitance at a low activation temperature (≤700 °C), nanoporous carbon materials were prepared from zanthoxylum bungeanum peels and seeds via the pyrolysis and KOH-activation processes. The results show that the optimal activation temperatures are 700 °C and 600 °C for peels and seeds. Benefiting from the hierarchical pore structure (micropores, mesopores, and macropores), the abundant heteroatoms (N, S, and O) containing functional groups, and plentiful electrochemical active sites, the PAC-700 and SAC-600 derive the large capacities of ~211.0 and ~219.7 F g−1 at 1.0 A g−1 in 6 M KOH within the three-electrode configuration. Furthermore, the symmetrical supercapacitors display a high energy density of 22.9 and 22.4 Wh kg−1 at 7500 W kg−1 assembled with PAC-700 and SAC-600, along with exceptional capacitance retention of 99.1% and 93.4% over 10,000 cycles at 1.0 A g−1. More significantly, the contribution here will stimulate the extensive development of low-temperature activation processes and nanoporous carbon materials for electrochemical energy storage and beyond.

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“…Plant-based materials are an excellent material for producing electrode materials with high electrical characteristics. For example, in Lobato-Peralta et al [ 3 ] it has been shown that the impregnation of corn husks in K 2 CO 3 solution and activation in the temperature range of 500–800 °C leads to the formation of activated carbon with nanoscale pores, a specific surface area exceeding 1000 m 2 /g, a specific capacity of 269 F/g and an energy density of approximately 10 W·h/kg. The authors note that the assembled supercapacitor using the resulting activated carbon showed stable operation during 20,000 charge/discharge cycles with minimal loss of the initial charge.…”

Section: Introductionmentioning

confidence: 99%

Electrophysical Properties and Heat Capacity of Activated Carbon Obtained from Coke Fines

Ordabaeva,

Muldakhmetov,

Kim

et al. 2023

Molecules

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This paper studies the dependence of the specific heat capacity (Cp) of activated carbon obtained by the activation of coke fines on temperature (T, K) and the dependence of electrical resistance (R, Om) on temperature (T, K). In the course of the work, it was found that in the temperature range of 298.15–448 K on the curve of dependence Cp − f(T) at 323 K there is a jump in heat capacity, associated with a phase transition of the second kind. Measurements of the temperature dependence of electrical resistance on temperature were also carried out, which showed that activated carbon in the temperature range of 293–343 K exhibits metallic conductivity, turning into a semiconductor in the temperature range of 343–463 K. The calculation of the band gap showed that the resulting activated carbon is a semiconductor with a moderately narrow band gap. The satisfactory agreement of the phase transition temperatures on the curves of the temperature dependences of the heat capacity on temperature (323 K) and on the curves of the dependences of electrical resistance and the relative permittivity on temperature (343 K) indicates the nature of this phase transition, i.e., at a temperature of 323 K, the change in heat capacity is associated with the transition from semiconductor conductivity to metallic.

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Sponge-like nanoporous activated carbon from corn husk as a sustainable and highly stable supercapacitor electrode for energy storage

Cited by 22 publications

References 65 publications

A comparative study on porous activated carbon derived from waste biomass with varying oxygen functionalities as supercapacitor electrodes

A comparative study on porous activated carbon derived from waste biomass with varying oxygen functionalities as supercapacitor electrodes

Nanoporous Carbon Materials Derived from Zanthoxylum Bungeanum Peel and Seed for Electrochemical Supercapacitors

Electrophysical Properties and Heat Capacity of Activated Carbon Obtained from Coke Fines

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