Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage Performance
Flexible supercapacitors (FSCs) are limited in flexible electronics applications due to their low energy density. Therefore, developing electrode materials with high energy density, high electrochemical activity, and remarkable flexibility is challenging. Herein, we designed nitrogen-doped porous MX...
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MDPI AG
2022-07-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/15/4890 |
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| author | Xin Tao Linlin Zhang Xuedong He Lingzi Fang Hongyan Wang Li Zhang Lianghao Yu Guang Zhu |
| author_facet | Xin Tao Linlin Zhang Xuedong He Lingzi Fang Hongyan Wang Li Zhang Lianghao Yu Guang Zhu |
| author_sort | Xin Tao |
| collection | DOAJ |
| description | Flexible supercapacitors (FSCs) are limited in flexible electronics applications due to their low energy density. Therefore, developing electrode materials with high energy density, high electrochemical activity, and remarkable flexibility is challenging. Herein, we designed nitrogen-doped porous MXene (N-MXene), using melamine-formaldehyde (MF) microspheres as a template and nitrogen source. We combined it with an electrospinning process to produce a highly flexible nitrogen-doped porous MXene nanofiber (N-MXene-F) as a self-supporting electrode material and assembled it into a symmetrical supercapacitor (SSC). On the one hand, the interconnected mesh structure allows the electrolyte to penetrate the porous network to fully infiltrate the material surface, shortening the ion transport channels; on the other hand, the uniform nitrogen doping enhances the pseudocapacitive performance. As a result, the as-assembled SSC exhibited excellent electrochemical performance and excellent long-term durability, achieving an energy density of 12.78 Wh kg<sup>−1</sup> at a power density of 1080 W kg<sup>−1</sup>, with long-term cycling stability up to 5000 cycles. This work demonstrates the impact of structural design and atomic doping on the electrochemical performance of MXene and opens up an exciting possibility for the fabrication of highly FSCs. |
| first_indexed | 2024-03-09T12:20:46Z |
| format | Article |
| id | doaj.art-552f37c4be9e407f9ded1287ace45465 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T12:20:46Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-552f37c4be9e407f9ded1287ace454652023-11-30T22:40:43ZengMDPI AGMolecules1420-30492022-07-012715489010.3390/molecules27154890Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage PerformanceXin Tao0Linlin Zhang1Xuedong He2Lingzi Fang3Hongyan Wang4Li Zhang5Lianghao Yu6Guang Zhu7School of Mechanics and Optoelectronic Physics, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Mechanics and Optoelectronic Physics, Anhui University of Science and Technology, Huainan 232001, ChinaKey Laboratory of Leather of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, ChinaKey Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Mechanical and Electronic Engineering, Suzhou University, Suzhou 234000, ChinaKey Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Mechanical and Electronic Engineering, Suzhou University, Suzhou 234000, ChinaKey Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Mechanical and Electronic Engineering, Suzhou University, Suzhou 234000, ChinaKey Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Mechanical and Electronic Engineering, Suzhou University, Suzhou 234000, ChinaKey Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Mechanical and Electronic Engineering, Suzhou University, Suzhou 234000, ChinaFlexible supercapacitors (FSCs) are limited in flexible electronics applications due to their low energy density. Therefore, developing electrode materials with high energy density, high electrochemical activity, and remarkable flexibility is challenging. Herein, we designed nitrogen-doped porous MXene (N-MXene), using melamine-formaldehyde (MF) microspheres as a template and nitrogen source. We combined it with an electrospinning process to produce a highly flexible nitrogen-doped porous MXene nanofiber (N-MXene-F) as a self-supporting electrode material and assembled it into a symmetrical supercapacitor (SSC). On the one hand, the interconnected mesh structure allows the electrolyte to penetrate the porous network to fully infiltrate the material surface, shortening the ion transport channels; on the other hand, the uniform nitrogen doping enhances the pseudocapacitive performance. As a result, the as-assembled SSC exhibited excellent electrochemical performance and excellent long-term durability, achieving an energy density of 12.78 Wh kg<sup>−1</sup> at a power density of 1080 W kg<sup>−1</sup>, with long-term cycling stability up to 5000 cycles. This work demonstrates the impact of structural design and atomic doping on the electrochemical performance of MXene and opens up an exciting possibility for the fabrication of highly FSCs.https://www.mdpi.com/1420-3049/27/15/4890flexible supercapacitorsnitrogen-doped 3D MXeneelectrospinning |
| spellingShingle | Xin Tao Linlin Zhang Xuedong He Lingzi Fang Hongyan Wang Li Zhang Lianghao Yu Guang Zhu Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage Performance Molecules flexible supercapacitors nitrogen-doped 3D MXene electrospinning |
| title | Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage Performance |
| title_full | Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage Performance |
| title_fullStr | Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage Performance |
| title_full_unstemmed | Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage Performance |
| title_short | Nitrogen-Doped Porous MXene (Ti<sub>3</sub>C<sub>2</sub>) for Flexible Supercapacitors with Enhanced Storage Performance |
| title_sort | nitrogen doped porous mxene ti sub 3 sub c sub 2 sub for flexible supercapacitors with enhanced storage performance |
| topic | flexible supercapacitors nitrogen-doped 3D MXene electrospinning |
| url | https://www.mdpi.com/1420-3049/27/15/4890 |
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