| 用于高性能超级电容器的氮掺杂碳纳米网的制备 |
| Preparation of Nitrogen-Doped Carbon Nanonets for High-Performance Supercapacitors |
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| 摘要: 以菲为碳源、氨气为氮源，通过一步碳化、活化法成功制得了氮掺杂碳纳米网（NCNs）。在800℃下制得的样品（NCN800）具有独特的网状结构、大的比表面积（1 567 m2·g-1）和高的原子百分含量（N 4.41%、O 13.71%）。归因于这些结构特征，工作电极NCN800在三电极系统中显示出高的比电容（0.05 A·g-1电流密度下比电容为542.3 F·g-1）。此外，用于对称超级电容器的NCN800电极展现了高的比电容（0.05 A·g-1电流密度下比电容为443.6 F·g-1）、良好的倍率性能（20 A·g-1电流密度下比电容为341.2 F·g-1）以及优异的循环稳定性（经过30 000次循环后比电容保持率为93.5%）。 |
| 关键词: 碳纳米材料 超级电容器 菲 氮掺杂 网状结构 |
| 基金项目: 国家自然科学基金（No.U1710116，U15608201，51872005，52072002）资助。 |
| Abstract: Herein, nitrogen-doped carbon nanonets (NCNs) were successfully prepared through one-step carbonization/activation method by using phenanthrene as carbon source and NH3 as nitrogen source. The sample obtained at 800℃ (NCN800) possessed a unique network structure, large specific surface area (1 567 m2·g-1) and high atomic fraction of N (4.41%) and O (13.71%) elements. Thanks to these structural features, NCN800 exhibited high specific capacitance (542.3 F·g-1 at 0.05 A·g-1) in a three-electrode system as a working electrode. In addition, NCN800 electrode for symmetric supercapacitor exhibited high specific capacitance (443.6 F·g-1 at 0.05 A·g-1), good rate capability (341.2 F·g-1 at 20 A·g-1) and outstanding cycling stability (93.5% capacitance retention after 30 000 cycles). |
| Keywords: carbon nanomaterials supercapacitors phenanthrene nitrogen-doped network structure |
| 投稿时间：2020-12-24 修订日期：2021-04-08 |
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| 杨磊,武婷婷,李宏强,金碧玉,何孝军.用于高性能超级电容器的氮掺杂碳纳米网的制备[J].无机化学学报,2021,37(6):1017-1026. |
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