One-step preparation of carbon nanotubes doped mesoporous birnessite K2Mn4O9 achieving 77% of theoretical capacitance by a facile redox reaction
文献类型：期刊论文
| 作者 | Kang, Litao1; Li, Peiyang1; Tao, Keyu1; Wang, Xiaomin1; Liang, Wei1; Gao, Yanfeng2,3 |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2016-01-20 |
| 卷号 | 302页码:352-360 |
| 关键词 | K2Mn4O9 Birnessite Supercapacitor Carbon nanotube Redox reaction |
| 英文摘要 | A facile, scalable and cost-efficient redox reaction is developed to prepare micro-powders of a quasi-crystallised, mesoporous birnessite-type manganese oxide, K2Mn4O9. In 1 M KOH electrolyte, the K2Mn4O9 powder shows a high specific capacitance of 754 F g(-1) at 1 A g(-1) (calculated with the net weight of K2Mn4O9 micro-powder only). Meanwhile, the electrode retains 91% of its initial capacitance after 5000 cycles at a high current density of 5 A g(-1). By simply adding carbon nanotubes (CNTs) into the reaction system, the specific capacitances of as-prepared K2Mn4O9/CNTs composites are further increased to 929 and 1055 F g(-1) at 1 A g(-1) in 1 and 6 M KOH electrolyte (corresponding to 69 and 77% of the theoretical capacitance of MnO2), or 600 and 674 F g(-1) at 5 A g(-1), respectively. Significantly, a maximum energy density of 62 Wh kg(-1) at a power density of 852 W kg(-1) could be achieved based on a K2Mn4O9/CNTsllactivated carbon asymmetric supercapacitor (ASC). At the same time, the ASC device exhibits a decent long cycle life with 85% specific capacitance retained after 1000 cycles, suggesting its wide application potential in low-cost high energy density storage systems. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Electrochemistry ; Energy & Fuels |
| 研究领域[WOS] | Electrochemistry ; Energy & Fuels |
| 关键词[WOS] | PERFORMANCE ELECTROCHEMICAL CAPACITORS ; ENHANCED SUPERCAPACITOR PERFORMANCE ; HIGH-ENERGY DENSITY ; ASYMMETRIC SUPERCAPACITOR ; ACTIVATED CARBON ; MANGANESE OXIDE ; ELECTRODE MATERIALS ; HYDROTHERMAL SYNTHESIS ; MNO2 ; STORAGE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000366068800045 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/23342]  |
| 专题 | 上海硅酸盐研究所_古陶瓷与工业陶瓷工程研究中心_期刊论文 |
| 作者单位 | 1.Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab Green Energy Mat & Storage Syst, Taiyuan 030024, Peoples R China 2.Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, Litao,Li, Peiyang,Tao, Keyu,et al. One-step preparation of carbon nanotubes doped mesoporous birnessite K2Mn4O9 achieving 77% of theoretical capacitance by a facile redox reaction[J]. JOURNAL OF POWER SOURCES,2016,302:352-360. |
| APA | Kang, Litao,Li, Peiyang,Tao, Keyu,Wang, Xiaomin,Liang, Wei,&Gao, Yanfeng.(2016).One-step preparation of carbon nanotubes doped mesoporous birnessite K2Mn4O9 achieving 77% of theoretical capacitance by a facile redox reaction.JOURNAL OF POWER SOURCES,302,352-360. |
| MLA | Kang, Litao,et al."One-step preparation of carbon nanotubes doped mesoporous birnessite K2Mn4O9 achieving 77% of theoretical capacitance by a facile redox reaction".JOURNAL OF POWER SOURCES 302(2016):352-360. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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