Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrode
Despite the high capacitance and low cost, transition metal oxides have the limitation of low electrical conductivities and structural instability. In order to resolve these problems, herein, we propose a one-pot facile synthesis approach to construct a hierarchically structured nanohybrid material,...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | JPhys Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2515-7655/acbf77 |
| _version_ | 1797844615433289728 |
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| author | Mingyu Jung Periyasamy Sivakumar Ho Seok Park |
| author_facet | Mingyu Jung Periyasamy Sivakumar Ho Seok Park |
| author_sort | Mingyu Jung |
| collection | DOAJ |
| description | Despite the high capacitance and low cost, transition metal oxides have the limitation of low electrical conductivities and structural instability. In order to resolve these problems, herein, we propose a one-pot facile synthesis approach to construct a hierarchically structured nanohybrid material, where carbon nanotube (CNT) branches encapsulate NiO nanoparticles inside the tubes and interconnect them with steam-activated reduced graphene oxide. This unique hierarchical structure is attributed to large accessible surface areas, rapid electronic conduction, fast ion diffusion, and buffering effects. Moreover, the mixed Ni and NiO particles acts as catalysts to grow CNT branches and high capacitance redox active materials. In particular, the resulting composite electrode deliver a high specific capacitance of up to 1605.81 F g ^−1 at a current density of 1 A g ^−1 as well as, an excellent cycle stability with 71.56% capacitance retention after more than 10 000 cycles. Consequently, this research provides a rational material design chemistry to construct hierarchical architectures and multiple compositions of CNT/graphene/metal oxide nanoparticle hybrids for high-capacitance electrodes of composite capacitors. |
| first_indexed | 2024-04-09T17:26:13Z |
| format | Article |
| id | doaj.art-9e6a6a90cfee464ba790c888aedc8847 |
| institution | Directory Open Access Journal |
| issn | 2515-7655 |
| language | English |
| last_indexed | 2024-04-09T17:26:13Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Energy |
| spelling | doaj.art-9e6a6a90cfee464ba790c888aedc88472023-04-18T13:50:18ZengIOP PublishingJPhys Energy2515-76552023-01-015202500510.1088/2515-7655/acbf77Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrodeMingyu Jung0Periyasamy Sivakumar1Ho Seok Park2https://orcid.org/0000-0002-4424-4037School of Chemical Engineering, Sungkyunkwan University , 2066, Seoburo, Jangan-gu, Suwon 440-746, Republic of KoreaDepartment of Chemistry, Dongguk University-Seoul Campus , Jung-gu, Seoul 04620, Republic of KoreaSchool of Chemical Engineering, Sungkyunkwan University , 2066, Seoburo, Jangan-gu, Suwon 440-746, Republic of Korea; Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University , 2066, Seoburo, Jangan-gu, Suwon 440-746, Republic of Korea; SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University , 2066, Seoburo, Jangan-gu, Suwon 440-746, Republic of KoreaDespite the high capacitance and low cost, transition metal oxides have the limitation of low electrical conductivities and structural instability. In order to resolve these problems, herein, we propose a one-pot facile synthesis approach to construct a hierarchically structured nanohybrid material, where carbon nanotube (CNT) branches encapsulate NiO nanoparticles inside the tubes and interconnect them with steam-activated reduced graphene oxide. This unique hierarchical structure is attributed to large accessible surface areas, rapid electronic conduction, fast ion diffusion, and buffering effects. Moreover, the mixed Ni and NiO particles acts as catalysts to grow CNT branches and high capacitance redox active materials. In particular, the resulting composite electrode deliver a high specific capacitance of up to 1605.81 F g ^−1 at a current density of 1 A g ^−1 as well as, an excellent cycle stability with 71.56% capacitance retention after more than 10 000 cycles. Consequently, this research provides a rational material design chemistry to construct hierarchical architectures and multiple compositions of CNT/graphene/metal oxide nanoparticle hybrids for high-capacitance electrodes of composite capacitors.https://doi.org/10.1088/2515-7655/acbf77encapsulationcompositehierarchical structurecarbon nanostructureenergy storage |
| spellingShingle | Mingyu Jung Periyasamy Sivakumar Ho Seok Park Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrode JPhys Energy encapsulation composite hierarchical structure carbon nanostructure energy storage |
| title | Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrode |
| title_full | Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrode |
| title_fullStr | Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrode |
| title_full_unstemmed | Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrode |
| title_short | Carbon nanotube branch-grown nickel nanoparticles/graphene composites for a high-capacitance electrode |
| title_sort | carbon nanotube branch grown nickel nanoparticles graphene composites for a high capacitance electrode |
| topic | encapsulation composite hierarchical structure carbon nanostructure energy storage |
| url | https://doi.org/10.1088/2515-7655/acbf77 |
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