Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials

Y. Quintero; S. Herrera; Z. Zapata-Benabithe; D. Arango; R. Santamaría; Z. González; L. Cruz

doi:10.1149/10001.0013ecst

Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials

Y. Quintero, S. Herrera, Z. Zapata-Benabithe, D. Arango, R. Santamaría, Z. González, L. Cruz

Research output: Chapter in Book/Report/Conference proceeding › Conference and proceedings › peer-review

Abstract

In this work, activated graphene-like materials were obtained by varying both, the ratio of activated agent/graphene precursor and the activation temperature. The resulting materials were then characterized, resulting in higher values of specific surface area (SSA) when increasing the impregnation ratio at each temperature, reaching values up to 1325 m² g⁻¹. Gravimetric capacitances ranging between 11.0 and 49.0 F g⁻¹ when charging/discharging at 0.5 A g^-1 were obtained. The highest capacitance value was achieved not for samples with the highest SSA but with a micropore volume up to ~ 63 % of total pore volume. Overall, the capacitance values decreased significantly at activation temperatures of 600 and 700 °C at 2:1 and 4:1 impregnation ratios, regardless of an enhanced SSA, which could be explained considering the release of surface oxygenated functional groups during the thermal treatment. These results present the activated graphene materials as promising electrodes in energy storage devices.

Original language	English
Title of host publication	IV Congreso Colombiano de Electroquimica, IVCCEQ 2020
Editors	J. Morales, J. Orozco, J. Calderon, R. A. Torres
Publisher	IOP Publishing Ltd
Pages	13-26
Number of pages	14
Edition	1
ISBN (Electronic)	9781607689102
DOIs	https://doi.org/10.1149/10001.0013ecst
State	Published - 2021
Event	4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020 - Virtual, Online, Colombia Duration: 5 Oct 2020 → 7 Oct 2020

Publication series

Name	ECS Transactions
Number	1
Volume	100
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020
Country/Territory	Colombia
City	Virtual, Online
Period	5/10/20 → 7/10/20

Bibliographical note

Publisher Copyright:
© The Electrochemical Society.

Types Minciencias

Eventos científicos con componente de apropiación

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10.1149/10001.0013ecst

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Quintero, Y., Herrera, S., Zapata-Benabithe, Z., Arango, D., Santamaría, R., González, Z., & Cruz, L. (2021). Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials. In J. Morales, J. Orozco, J. Calderon, & R. A. Torres (Eds.), IV Congreso Colombiano de Electroquimica, IVCCEQ 2020 (1 ed., pp. 13-26). (ECS Transactions; Vol. 100, No. 1). IOP Publishing Ltd. https://doi.org/10.1149/10001.0013ecst

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title = "Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials",

abstract = "In this work, activated graphene-like materials were obtained by varying both, the ratio of activated agent/graphene precursor and the activation temperature. The resulting materials were then characterized, resulting in higher values of specific surface area (SSA) when increasing the impregnation ratio at each temperature, reaching values up to 1325 m2 g−1. Gravimetric capacitances ranging between 11.0 and 49.0 F g−1 when charging/discharging at 0.5 A g-1 were obtained. The highest capacitance value was achieved not for samples with the highest SSA but with a micropore volume up to ~ 63 % of total pore volume. Overall, the capacitance values decreased significantly at activation temperatures of 600 and 700 °C at 2:1 and 4:1 impregnation ratios, regardless of an enhanced SSA, which could be explained considering the release of surface oxygenated functional groups during the thermal treatment. These results present the activated graphene materials as promising electrodes in energy storage devices.",

author = "Y. Quintero and S. Herrera and Z. Zapata-Benabithe and D. Arango and R. Santamar{\'i}a and Z. Gonz{\'a}lez and L. Cruz",

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Quintero, Y, Herrera, S, Zapata-Benabithe, Z, Arango, D, Santamaría, R, González, Z & Cruz, L 2021, Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials. in J Morales, J Orozco, J Calderon & RA Torres (eds), IV Congreso Colombiano de Electroquimica, IVCCEQ 2020. 1 edn, ECS Transactions, no. 1, vol. 100, IOP Publishing Ltd, pp. 13-26, 4th Congreso Colombiano de Electroquimica, IVCCEQ 2020 - 4th Colombian Congress of Electrochemistry, IVCCEQ 2020, Virtual, Online, Colombia, 5/10/20. https://doi.org/10.1149/10001.0013ecst

Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials. / Quintero, Y.; Herrera, S.; Zapata-Benabithe, Z. 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. 13-26 (ECS Transactions; Vol. 100, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference and proceedings › peer-review

TY - GEN

T1 - Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials

AU - Quintero, Y.

AU - Herrera, S.

AU - Zapata-Benabithe, Z.

AU - Arango, D.

AU - Santamaría, R.

AU - González, Z.

AU - Cruz, L.

PY - 2021

Y1 - 2021

N2 - In this work, activated graphene-like materials were obtained by varying both, the ratio of activated agent/graphene precursor and the activation temperature. The resulting materials were then characterized, resulting in higher values of specific surface area (SSA) when increasing the impregnation ratio at each temperature, reaching values up to 1325 m2 g−1. Gravimetric capacitances ranging between 11.0 and 49.0 F g−1 when charging/discharging at 0.5 A g-1 were obtained. The highest capacitance value was achieved not for samples with the highest SSA but with a micropore volume up to ~ 63 % of total pore volume. Overall, the capacitance values decreased significantly at activation temperatures of 600 and 700 °C at 2:1 and 4:1 impregnation ratios, regardless of an enhanced SSA, which could be explained considering the release of surface oxygenated functional groups during the thermal treatment. These results present the activated graphene materials as promising electrodes in energy storage devices.

AB - In this work, activated graphene-like materials were obtained by varying both, the ratio of activated agent/graphene precursor and the activation temperature. The resulting materials were then characterized, resulting in higher values of specific surface area (SSA) when increasing the impregnation ratio at each temperature, reaching values up to 1325 m2 g−1. Gravimetric capacitances ranging between 11.0 and 49.0 F g−1 when charging/discharging at 0.5 A g-1 were obtained. The highest capacitance value was achieved not for samples with the highest SSA but with a micropore volume up to ~ 63 % of total pore volume. Overall, the capacitance values decreased significantly at activation temperatures of 600 and 700 °C at 2:1 and 4:1 impregnation ratios, regardless of an enhanced SSA, which could be explained considering the release of surface oxygenated functional groups during the thermal treatment. These results present the activated graphene materials as promising electrodes in energy storage devices.

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M3 - Ponencia publicada en las memorias del evento con ISBN

AN - SCOPUS:85101435336

T3 - ECS Transactions

SP - 13

EP - 26

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 -

Quintero Y, Herrera S, Zapata-Benabithe Z, Arango D, Santamaría R, González Z et al. Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials. In Morales J, Orozco J, Calderon J, Torres RA, editors, IV Congreso Colombiano de Electroquimica, IVCCEQ 2020. 1 ed. IOP Publishing Ltd. 2021. p. 13-26. (ECS Transactions; 1). doi: 10.1149/10001.0013ecst

Influence of the activation parameters on the electrochemical performance of chemically activated graphene materials

Abstract

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