Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3

Z. Zapata-Benabithe; E. Arenas; D. A. Borrás-Jiménez; S. N. Herrera-Penagos

doi:10.1149/10001.0027ecst

Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3

Z. Zapata-Benabithe, E. Arenas, D. A. Borrás-Jiménez, S. N. Herrera-Penagos

Resultado de la investigación: Capítulo del libro/informe/acta de congreso › Contribución a la conferencia › revisión exhaustiva

Resumen

Activated carbon electrodes were synthetized from African palm shell with KOH (CK) at 2/1 KOH/biomass mass ratio and treated thermically at 700 °C (1056 m²/g). Then CK was modified at different conditions by surface treatment using HNO3/CK impregnation mass ratios 1 and 12, temperatures between 25 – 80 °C, impregnation time 1 – 4 h. The performance of electrodes as supercapacitors was evaluated in 1 M H2SO4 using electrical impedance spectroscopy (EIS) and charge/discharge technique (CP). The results showed that the specific capacitance increases upon oxidation (57 F/g up to 89.7 F/g). The highest capacitance was obtained for sample prepared at impregnation ratio 1, 4 h and 25 °C (606 m²/g) without increasing the equivalent resistance series significantly. These results were influenced mainly by the increased of nitrogen functional groups rather than specific surface area, which confirm that the surface composition has a high influence on the electrochemical performance.

Idioma original	Inglés
Título de la publicación alojada	IV Congreso Colombiano de Electroquimica, IVCCEQ 2020
Editores	J. Morales, J. Orozco, J. Calderon, R. A. Torres
Editorial	IOP Publishing Ltd
Páginas	27-35
Número de páginas	9
Edición	1
ISBN (versión digital)	9781607689102
DOI	https://doi.org/10.1149/10001.0027ecst
Estado	Publicada - 2021
Evento	4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020 - Virtual, Online, Colombia Duración: 5 oct. 2020 → 7 oct. 2020

Serie de la publicación

Nombre	ECS Transactions
Número	1
Volumen	100
ISSN (versión impresa)	1938-6737
ISSN (versión digital)	1938-5862

Conferencia

Conferencia	4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020
País/Territorio	Colombia
Ciudad	Virtual, Online
Período	5/10/20 → 7/10/20

Nota bibliográfica

Publisher Copyright:
© The Electrochemical Society.

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10.1149/10001.0027ecst

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Zapata-Benabithe, Z., Arenas, E., Borrás-Jiménez, D. A., & Herrera-Penagos, S. N. (2021). Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3. En J. Morales, J. Orozco, J. Calderon, & R. A. Torres (Eds.), IV Congreso Colombiano de Electroquimica, IVCCEQ 2020 (1 ed., pp. 27-35). (ECS Transactions; Vol. 100, N.º 1). IOP Publishing Ltd. https://doi.org/10.1149/10001.0027ecst

Zapata-Benabithe, Z. ; Arenas, E. ; Borrás-Jiménez, D. A. et al. / Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3. IV Congreso Colombiano de Electroquimica, IVCCEQ 2020. editor / J. Morales ; J. Orozco ; J. Calderon ; R. A. Torres. 1. ed. IOP Publishing Ltd, 2021. pp. 27-35 (ECS Transactions; 1).

@inproceedings{c3fc8e9f75fb49799c3043a6743509cc,

title = "Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3",

abstract = "Activated carbon electrodes were synthetized from African palm shell with KOH (CK) at 2/1 KOH/biomass mass ratio and treated thermically at 700 °C (1056 m2/g). Then CK was modified at different conditions by surface treatment using HNO3/CK impregnation mass ratios 1 and 12, temperatures between 25 – 80 °C, impregnation time 1 – 4 h. The performance of electrodes as supercapacitors was evaluated in 1 M H2SO4 using electrical impedance spectroscopy (EIS) and charge/discharge technique (CP). The results showed that the specific capacitance increases upon oxidation (57 F/g up to 89.7 F/g). The highest capacitance was obtained for sample prepared at impregnation ratio 1, 4 h and 25 °C (606 m2/g) without increasing the equivalent resistance series significantly. These results were influenced mainly by the increased of nitrogen functional groups rather than specific surface area, which confirm that the surface composition has a high influence on the electrochemical performance.",

author = "Z. Zapata-Benabithe and E. Arenas and Borr{\'a}s-Jim{\'e}nez, {D. A.} and Herrera-Penagos, {S. N.}",

note = "Publisher Copyright: {\textcopyright} The Electrochemical Society.; 4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020 ; Conference date: 05-10-2020 Through 07-10-2020",

year = "2021",

doi = "10.1149/10001.0027ecst",

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Zapata-Benabithe, Z , Arenas, E, Borrás-Jiménez, DA & Herrera-Penagos, SN 2021, Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3. En J Morales, J Orozco, J Calderon & RA Torres (eds.), IV Congreso Colombiano de Electroquimica, IVCCEQ 2020. 1 ed., ECS Transactions, n.º 1, vol. 100, IOP Publishing Ltd, pp. 27-35, 4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020, Virtual, Online, Colombia, 5/10/20. https://doi.org/10.1149/10001.0027ecst

Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3. / Zapata-Benabithe, Z.; Arenas, E.; Borrás-Jiménez, D. A. et al.
IV Congreso Colombiano de Electroquimica, IVCCEQ 2020. ed. / J. Morales; J. Orozco; J. Calderon; R. A. Torres. 1. ed. IOP Publishing Ltd, 2021. p. 27-35 (ECS Transactions; Vol. 100, N.º 1).

Resultado de la investigación: Capítulo del libro/informe/acta de congreso › Contribución a la conferencia › revisión exhaustiva

TY - GEN

T1 - Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3

AU - Zapata-Benabithe, Z.

AU - Arenas, E.

AU - Borrás-Jiménez, D. A.

AU - Herrera-Penagos, S. N.

N1 - Publisher Copyright: © The Electrochemical Society.

PY - 2021

Y1 - 2021

N2 - Activated carbon electrodes were synthetized from African palm shell with KOH (CK) at 2/1 KOH/biomass mass ratio and treated thermically at 700 °C (1056 m2/g). Then CK was modified at different conditions by surface treatment using HNO3/CK impregnation mass ratios 1 and 12, temperatures between 25 – 80 °C, impregnation time 1 – 4 h. The performance of electrodes as supercapacitors was evaluated in 1 M H2SO4 using electrical impedance spectroscopy (EIS) and charge/discharge technique (CP). The results showed that the specific capacitance increases upon oxidation (57 F/g up to 89.7 F/g). The highest capacitance was obtained for sample prepared at impregnation ratio 1, 4 h and 25 °C (606 m2/g) without increasing the equivalent resistance series significantly. These results were influenced mainly by the increased of nitrogen functional groups rather than specific surface area, which confirm that the surface composition has a high influence on the electrochemical performance.

AB - Activated carbon electrodes were synthetized from African palm shell with KOH (CK) at 2/1 KOH/biomass mass ratio and treated thermically at 700 °C (1056 m2/g). Then CK was modified at different conditions by surface treatment using HNO3/CK impregnation mass ratios 1 and 12, temperatures between 25 – 80 °C, impregnation time 1 – 4 h. The performance of electrodes as supercapacitors was evaluated in 1 M H2SO4 using electrical impedance spectroscopy (EIS) and charge/discharge technique (CP). The results showed that the specific capacitance increases upon oxidation (57 F/g up to 89.7 F/g). The highest capacitance was obtained for sample prepared at impregnation ratio 1, 4 h and 25 °C (606 m2/g) without increasing the equivalent resistance series significantly. These results were influenced mainly by the increased of nitrogen functional groups rather than specific surface area, which confirm that the surface composition has a high influence on the electrochemical performance.

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U2 - 10.1149/10001.0027ecst

DO - 10.1149/10001.0027ecst

M3 - Contribución a la conferencia

AN - SCOPUS:85101470710

T3 - ECS Transactions

SP - 27

EP - 35

BT - IV Congreso Colombiano de Electroquimica, IVCCEQ 2020

A2 - Morales, J.

A2 - Orozco, J.

A2 - Calderon, J.

A2 - Torres, R. A.

PB - IOP Publishing Ltd

T2 - 4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020

Y2 - 5 October 2020 through 7 October 2020

ER -

Zapata-Benabithe Z , Arenas E, Borrás-Jiménez DA, Herrera-Penagos SN. Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3. En Morales J, Orozco J, Calderon J, Torres RA, editores, IV Congreso Colombiano de Electroquimica, IVCCEQ 2020. 1 ed. IOP Publishing Ltd. 2021. p. 27-35. (ECS Transactions; 1). doi: 10.1149/10001.0027ecst

Improvement of electrochemical capacitance of activated carbon electrodes from African palm shell modified with HNO3

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