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| 论文编号: |
122214O120120380 |
| 第一作者所在部门: |
705组 |
| 中文论文题目: |
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| 英文论文题目: |
Preparation and Electrochemical Performance of Nitrogen-enriched Carbon Nanofibers
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| 论文题目英文: |
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| 作者: |
马昌
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| 论文出处: |
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| 刊物名称: |
carbon2012
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| 年: |
2012
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| 卷: |
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| 期: |
1 |
| 页: |
1-1 |
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| 摘要: |
Nitrogen-enriched carbon nanofibers, in the form of a film with three-dimensional network structure, were prepared by electrospinning from melamine resin/PVA. Serious shrink occurred during the carbonization stage, and the average diameter of the carbon fibers was about 297 nm. The as-prepared carbon nanofibers had moderate specific surface area as well as enriched nitrogen content, both of which could be easily tailored by controlling the carbonization temperature. With the carbonization temperature increasing, the BET surface area gradually increased, while the nitrogen content decreased. Results showed that nitrogen functionalities provided substantial pseudo-capacitance contribution. As the nitrogen content increased, the specific capacitance as well as the specific surface capacitance increased. In spite of the lowest BET surface area (130 m2 g-1), sample carbonized at 600 °C presented the biggest specific capacitance as high as 285 F g-1, which was associated with the rich nitrogen content(5.3 wt. %). In addition, nanoscaled fiber diameter, shortening the ion diffusion distance, and three-dimensional network structure, providing an easily available electrode/electrolyte interface, played active roles in improving electrochemical performance. |
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