Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of Conditions
Energy storage systems (ESSs) are attracting increasing attention for the development of sustainable and renewable energy technologies owing to limited fossil fuels. Supercapacitors are gaining significant interest as energy storage devices owing to their high-power density and long-term cycle stabi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/1/102 |
| _version_ | 1797358879467634688 |
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| author | Ji-Woo Park In-Yup Jeon Young-Wan Ju |
| author_facet | Ji-Woo Park In-Yup Jeon Young-Wan Ju |
| author_sort | Ji-Woo Park |
| collection | DOAJ |
| description | Energy storage systems (ESSs) are attracting increasing attention for the development of sustainable and renewable energy technologies owing to limited fossil fuels. Supercapacitors are gaining significant interest as energy storage devices owing to their high-power density and long-term cycle stability. The use of suitable electrode materials affects the performance of supercapacitors. In this study, we fabricated a carboxyl-doped graphene nanoplatelet (CGnP) via a mechanochemical reaction. Additionally, CGnP was activated by controlling parameters such as temperature, flow rate, and maintenance period and evaluated as an electrode material for supercapacitors. The effect of the specific surface area (SSA) and functional groups of the fabricated samples on the capacitance was confirmed by controlling the activation parameters. The activated CGnP with 300 mL/min of CO<sub>2</sub> at 1173 K for 4 h exhibited a high SSA of 1300 m<sup>2</sup>/g. The activated CGnP (180 F/g), with a high SSA, showed an increased capacitance of 46% compared to pristine CGnP (123 F/g). Additionally, activated CGnP1100 demonstrated good wettability and exhibited excellent stability with a low capacitance decrease of 6.1%, even after 10,000 cycles. |
| first_indexed | 2024-03-08T15:08:36Z |
| format | Article |
| id | doaj.art-98219fc08b8e4771a7607083cab7782e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-08T15:08:36Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-98219fc08b8e4771a7607083cab7782e2024-01-10T14:55:48ZengMDPI AGEnergies1996-10732023-12-0117110210.3390/en17010102Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of ConditionsJi-Woo Park0In-Yup Jeon1Young-Wan Ju2Department of Chemical Engineering, College of Engineering, Wonkwang University, Iksan 54538, Republic of KoreaDepartment of Chemical Engineering, College of Engineering, Wonkwang University, Iksan 54538, Republic of KoreaDepartment of Chemical Engineering, College of Engineering, Wonkwang University, Iksan 54538, Republic of KoreaEnergy storage systems (ESSs) are attracting increasing attention for the development of sustainable and renewable energy technologies owing to limited fossil fuels. Supercapacitors are gaining significant interest as energy storage devices owing to their high-power density and long-term cycle stability. The use of suitable electrode materials affects the performance of supercapacitors. In this study, we fabricated a carboxyl-doped graphene nanoplatelet (CGnP) via a mechanochemical reaction. Additionally, CGnP was activated by controlling parameters such as temperature, flow rate, and maintenance period and evaluated as an electrode material for supercapacitors. The effect of the specific surface area (SSA) and functional groups of the fabricated samples on the capacitance was confirmed by controlling the activation parameters. The activated CGnP with 300 mL/min of CO<sub>2</sub> at 1173 K for 4 h exhibited a high SSA of 1300 m<sup>2</sup>/g. The activated CGnP (180 F/g), with a high SSA, showed an increased capacitance of 46% compared to pristine CGnP (123 F/g). Additionally, activated CGnP1100 demonstrated good wettability and exhibited excellent stability with a low capacitance decrease of 6.1%, even after 10,000 cycles.https://www.mdpi.com/1996-1073/17/1/102activation processgraphene nanoplateletsmechanochemicalsurface propertiessupercapacitor |
| spellingShingle | Ji-Woo Park In-Yup Jeon Young-Wan Ju Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of Conditions Energies activation process graphene nanoplatelets mechanochemical surface properties supercapacitor |
| title | Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of Conditions |
| title_full | Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of Conditions |
| title_fullStr | Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of Conditions |
| title_full_unstemmed | Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of Conditions |
| title_short | Effect of Carboxyl-Doped Graphene Nanoplatelets as an Electrode for Supercapacitors According to Surface Property Changes via the Control of Conditions |
| title_sort | effect of carboxyl doped graphene nanoplatelets as an electrode for supercapacitors according to surface property changes via the control of conditions |
| topic | activation process graphene nanoplatelets mechanochemical surface properties supercapacitor |
| url | https://www.mdpi.com/1996-1073/17/1/102 |
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