Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors
Abstract Nitrogen-doped microporous carbon spheres (NMCSs) are successfully prepared via carbonization and KOH activation of phenol-formaldehyde resin polymer spheres synthesized by a facile and time-saving one-step hydrothermal strategy using triblock copolymer Pluronic F108 as a soft template unde...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-10-01
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| Series: | Nanoscale Research Letters |
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| Online Access: | http://link.springer.com/article/10.1186/s11671-018-2713-0 |
| _version_ | 1827854239680954368 |
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| author | Zhongguan Liang Hao Liu Jianping Zeng Jianfei Zhou Hongjian Li Hui Xia |
| author_facet | Zhongguan Liang Hao Liu Jianping Zeng Jianfei Zhou Hongjian Li Hui Xia |
| author_sort | Zhongguan Liang |
| collection | DOAJ |
| description | Abstract Nitrogen-doped microporous carbon spheres (NMCSs) are successfully prepared via carbonization and KOH activation of phenol-formaldehyde resin polymer spheres synthesized by a facile and time-saving one-step hydrothermal strategy using triblock copolymer Pluronic F108 as a soft template under the Stöber-like method condition. The influence of the ethanol/water volume ratios and carbonation temperatures on the morphologies, pore structures and electrochemical performances of the prepared NMCSs are investigated systematically. The optimal NMCSs have a large specific surface area of 1517 m2 g− 1 with a pore volume of 0.8 cm3 g− 1. The X-ray photo-electron spectroscopy analysis reveals a suitable nitrogen-doped content of 2.6 at.%. The as-prepared NMCSs used as supercapacitor electrode materials exhibit an outstanding specific capacitance of 416 F g− 1 at a current density of 0.2 A g− 1, also it shows an excellent charge/discharge cycling stability with 96.9% capacitance retention after 10,000 cycles. The constructed symmetric supercapacitors using PVA/KOH as the gel electrolyte can deliver a specific capacitance of 60.6 F g− 1 at current density of 1 A g− 1. A maximum energy density of 21.5 Wh kg− 1 can be achieved at a power density of 800 W kg− 1, and the energy density still maintains 13.3 Wh kg− 1 even at a high power density of 16 kW kg− 1. The results suggest that this work can open up a facile and effective way to synthesize the NMCSs for electrode materials of high performance energy storage devices. |
| first_indexed | 2024-03-12T11:18:44Z |
| format | Article |
| id | doaj.art-5f10f09a77f643f188a6438708688378 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T11:18:44Z |
| publishDate | 2018-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-5f10f09a77f643f188a64387086883782023-09-02T01:33:14ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2018-10-0113111210.1186/s11671-018-2713-0Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric SupercapacitorsZhongguan Liang0Hao Liu1Jianping Zeng2Jianfei Zhou3Hongjian Li4Hui Xia5School of Physics and Electronics, Central South UniversitySchool of Physics and Electronics, Central South UniversitySchool of Physics and Electronics, Hunan UniversitySchool of Physics and Electronics, Central South UniversitySchool of Physics and Electronics, Central South UniversitySchool of Physics and Electronics, Central South UniversityAbstract Nitrogen-doped microporous carbon spheres (NMCSs) are successfully prepared via carbonization and KOH activation of phenol-formaldehyde resin polymer spheres synthesized by a facile and time-saving one-step hydrothermal strategy using triblock copolymer Pluronic F108 as a soft template under the Stöber-like method condition. The influence of the ethanol/water volume ratios and carbonation temperatures on the morphologies, pore structures and electrochemical performances of the prepared NMCSs are investigated systematically. The optimal NMCSs have a large specific surface area of 1517 m2 g− 1 with a pore volume of 0.8 cm3 g− 1. The X-ray photo-electron spectroscopy analysis reveals a suitable nitrogen-doped content of 2.6 at.%. The as-prepared NMCSs used as supercapacitor electrode materials exhibit an outstanding specific capacitance of 416 F g− 1 at a current density of 0.2 A g− 1, also it shows an excellent charge/discharge cycling stability with 96.9% capacitance retention after 10,000 cycles. The constructed symmetric supercapacitors using PVA/KOH as the gel electrolyte can deliver a specific capacitance of 60.6 F g− 1 at current density of 1 A g− 1. A maximum energy density of 21.5 Wh kg− 1 can be achieved at a power density of 800 W kg− 1, and the energy density still maintains 13.3 Wh kg− 1 even at a high power density of 16 kW kg− 1. The results suggest that this work can open up a facile and effective way to synthesize the NMCSs for electrode materials of high performance energy storage devices.http://link.springer.com/article/10.1186/s11671-018-2713-0Nitrogen-dopedMicroporous carbon spheresSupercapacitorEnergy storage and conversion |
| spellingShingle | Zhongguan Liang Hao Liu Jianping Zeng Jianfei Zhou Hongjian Li Hui Xia Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors Nanoscale Research Letters Nitrogen-doped Microporous carbon spheres Supercapacitor Energy storage and conversion |
| title | Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors |
| title_full | Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors |
| title_fullStr | Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors |
| title_full_unstemmed | Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors |
| title_short | Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors |
| title_sort | facile synthesis of nitrogen doped microporous carbon spheres for high performance symmetric supercapacitors |
| topic | Nitrogen-doped Microporous carbon spheres Supercapacitor Energy storage and conversion |
| url | http://link.springer.com/article/10.1186/s11671-018-2713-0 |
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