| 石墨烯/二氧化锰复合材料的制备及其电化学性能 |
| |
| 引用本文： | 周龙斐,邱红梅,徐美,路彦珍,胡建玲,王子娅,王凤平.石墨烯/二氧化锰复合材料的制备及其电化学性能[J].北京科技大学学报,2016(9):1300-1305. |
| |
| 作者姓名： | 周龙斐 邱红梅 徐美 路彦珍 胡建玲 王子娅 王凤平 |
| |
| 作者单位： | 北京科技大学数理学院,北京,100083 |
| |
| 基金项目： | 中央高校基础科研基金资助项目(FRF-AS-13-004A;FRF-BR-14-024A)，北京科技大学基本科研业务费资助项目(FRF-BR-14-024A)，北京高等学校青年英才计划资助项目(YETP0390) |
| |
| 摘 要： | 通过水热法在160℃条件下成功制备了手风琴状石墨烯/MnO2复合材料.通过场发射扫描电镜、透射电镜、X射线衍射、X射线能量色散谱、BET法以及拉曼光谱对材料进行表征.结果表明,手风琴状二氧化锰与层状石墨烯之间具有十分高效的贴合,这种创新性设计有效地利用了石墨烯的高电导率、大比表面积以及二氧化锰的优秀赝电容行为.电化学测试结果给出在0.2 A·g-1时,样品的比电容高达138 F·g-1,数倍增强于单独的二氧化锰或石墨烯样品.
|
| 关 键 词： | 二氧化锰 石墨烯 水热合成 超级电容器 |
Synthesis and electrochemical properties of graphene/MnO2 composites |
| |
| ZHOU Long-fei,QIU Hong-mei,XU Mei,LU Yan-zhen,HU Jian-ling,WANG Zi-ya,WANG Feng-ping.Synthesis and electrochemical properties of graphene/MnO2 composites[J].Journal of University of Science and Technology Beijing,2016(9):1300-1305. |
| |
| Authors: | ZHOU Long-fei QIU Hong-mei XU Mei LU Yan-zhen HU Jian-ling WANG Zi-ya WANG Feng-ping |
| |
| Abstract: | Accordion-like MnO2-coated graphene composites were successfully prepared by a facile hydrothermal method at 160℃. The as-products were characterized by field emission scanning electron microscopy, transmission electron microscopy, X-ray dif-fraction, energy dispersive spectrometry, BET and Raman spectroscopy. The high capacitance of 138 F·g-1 at 0. 2 A·g-1 is achieved with MnO2/graphene composites as a supercapacitor electrode, much higher than that of a single MnO2 or graphene electrode. The ex-cellent electrochemical performance is attributed to the uniform MnO2 nanosheet morphology, large surface area of graphene and stable chemical bonding of MnO2 on the graphene substrate. |
| |
| Keywords: | manganese dioxide graphene hydrothermal synthesis supercapacitors |
| 本文献已被 万方数据 等数据库收录！ |
|
