Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors
文献类型：期刊论文
| 作者 | Liu, YJ; Cao, JY; Jiang, XH; Yang, YG; Yu, LM; Yan, XF; Yu, LM (reprint author), Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China.; Yu, LM (reprint author), Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Peoples R China. |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018-04-28 |
| 卷号 | 6期号:16页码:6891-6903 |
| ISSN号 | 2050-7488 |
| 关键词 | High-performance Supercapacitors Long Cycle Life Electrochemical Capacitors Electrode Materials Nitrogen-content Energy-storage Surface-area Facile Synthesis Nanofibers Graphene |
| 英文摘要 | The increasing demand for a satisfactory combination of energy-power features in supercapacitors has triggered considerable research efforts dedicated to the development of high-efficiency energy storage devices. In our study, highly cross-linked porous carbon microspheres were prepared via the carbonization of as-prepared polymer spheres followed by a KOH activation process. The resultant products exhibited a high maximum specific surface area (3065.6 m(2) g(-1)), rich nitrogen and oxygen doping (22.3 wt%) and a significant volume fraction of mesopores/macropores (37.91%). The optimal electrode presents the highest specific capacitance of 290 F g(-1) and superior cycling stability with 96% retention after 3000 cycles in an aqueous 2 M KOH electrolyte. Moreover, the assembled asymmetric supercapacitor device based on Co0.9Mn0.1 arrays as the positive electrode achieves a specific capacitance of 105.43 F g(-1) and an energy density of 134.9 W h kg(-1) at a power density of 2879.8 W kg(-1). Interestingly, the device can illuminate an LED for 30 min, demonstrating the promising application potential in high-performance devices related to energy storage.; The increasing demand for a satisfactory combination of energy-power features in supercapacitors has triggered considerable research efforts dedicated to the development of high-efficiency energy storage devices. In our study, highly cross-linked porous carbon microspheres were prepared via the carbonization of as-prepared polymer spheres followed by a KOH activation process. The resultant products exhibited a high maximum specific surface area (3065.6 m(2) g(-1)), rich nitrogen and oxygen doping (22.3 wt%) and a significant volume fraction of mesopores/macropores (37.91%). The optimal electrode presents the highest specific capacitance of 290 F g(-1) and superior cycling stability with 96% retention after 3000 cycles in an aqueous 2 M KOH electrolyte. Moreover, the assembled asymmetric supercapacitor device based on Co0.9Mn0.1 arrays as the positive electrode achieves a specific capacitance of 105.43 F g(-1) and an energy density of 134.9 W h kg(-1) at a power density of 2879.8 W kg(-1). Interestingly, the device can illuminate an LED for 30 min, demonstrating the promising application potential in high-performance devices related to energy storage. |
| 学科主题 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China [U1706225]; Fundamental Research Funds for the Central Universities [201562026, 201762029] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79353]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yu, LM (reprint author), Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China.; Yu, LM (reprint author), Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Liu, YJ,Cao, JY,Jiang, XH,et al. Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(16):6891-6903. |
| APA | Liu, YJ.,Cao, JY.,Jiang, XH.,Yang, YG.,Yu, LM.,...&Yu, LM .(2018).Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors.JOURNAL OF MATERIALS CHEMISTRY A,6(16),6891-6903. |
| MLA | Liu, YJ,et al."Large scale production of polyacrylonitrile-based porous carbon nanospheres for asymmetric supercapacitors".JOURNAL OF MATERIALS CHEMISTRY A 6.16(2018):6891-6903. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。