钟奇能,粟泽龙,李新禄.氮掺杂石墨烯柔性薄膜的制备及其超电容性能[J].表面技术,2015,44(1):51-55,63.
ZHONG Qi-neng,SU Ze-long,LI Xin-lu.Preparation and Supercapacitor Performance of a Flexible Nitrogen-doped Graphene Film[J].Surface Technology,2015,44(1):51-55,63 |
| 氮掺杂石墨烯柔性薄膜的制备及其超电容性能 |
| Preparation and Supercapacitor Performance of a Flexible Nitrogen-doped Graphene Film |
| 投稿时间：2014-12-22 修订日期：2015-01-20 |
| DOI： |
| 中文关键词: 氮掺杂石墨烯 多孔结构 超级电容器 |
| 英文关键词:N-doped graphene porous structure supercapacitor |
| 基金项目:国家自然科学基金(51172293);中央高校基础研究基金(CDJZR13130027) |
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| 中文摘要: |
| 目的 改善超级电容器用石墨烯薄膜的超电容性能。 方法 采用水热和高温热解法制备多孔氮掺杂的石墨烯柔性薄膜,采用 SEM 形貌、XRD 图谱和等温曲线分析其结构,采用三电极体系测试循环伏安曲线和恒流充放电曲线,分析其超电容性能。 结果 氮掺杂石墨烯柔性薄膜保持了氧化石墨烯的褶皱透明,同时具有网络式的多孔洞结构。 氮气吸脱附测试表明,氮掺杂多孔石墨烯的比表面积为280. 78 m2/ g。 氮掺杂石墨烯薄膜在 1. 0 mol/ L 硫酸钠溶液中,当电流密度为 0. 1 A/ g 时,其比容量达到 169 F/ g。结论 氮原子的掺杂以及氮掺杂石墨烯柔性薄膜的多孔结构可以有效提高石墨烯材料的超电容性能。 |
| 英文摘要: |
| Objective To improve the electrochemical performance of graphene films for supercapacitors. Methods Flexible nitrogen-doped graphene (N-doped graphene) films with porous structure were synthesized by hydrothermal and pyrolysis methods. The structure of the N-doped graphene films were analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD) and isotherms. The electrochemical capacitance of N-doped graphene films was examined by three-electrode system test cyclic voltammetry and galvanostatic charge-discharge methods. Results The experiments indicated that the flexible N-doped graphene films retained the folded and transparent characteristics of graphene oxide, and formed a three-dimensional porous structure as well. The surface area of N-doped grapheme was measured to be 280. 78 m2 / g by the nitrogen adsorption-desorption test. The specific discharge capacitance for the material was 169 F/ g in 1. 0 mol/ L NaSO4 solution when the current density was 0. 1 A/ g. Conclusion The doping of nitrogen atoms and the porous structure of the flexible N-doped graphene films could effectively improve the supercapacitor performance of the graphene material. |
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