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DOI | 10.1038/ncomms15263 |
Block copolymer derived uniform mesopores enable ultrafast electron and ion transport at high mass loadings | |
Liu, Tianyu1; Zhou, Zhengping1; Guo, Yichen1; Guo, Dong1; Liu, Guoliang1,2,3 | |
2019-02-08 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | High mass loading and fast charge transport are two crucial but often mutually exclusive characteristics of pseudocapacitors. On conventional carbon supports, high mass loadings inevitably lead to sluggish electron conduction and ion diffusion due to thick pseudocapacitive layers and clogged pores. Here we present a design principle of carbon supports, utilizing self-assembly and microphase-separation of block copolymers. We synthesize porous carbon fibers (PCFs) with uniform mesopores of 11.7 nm, which are partially filled with MnO2 of <2 nm in thickness. The uniform mesopores and ultrathin MnO2 enable fast electron/ion transport comparable to electrical-double-layer-capacitive carbons. At mass loadings approaching 7mg cm(-2), the gravimetric and areal capacitances of MnO2 (similar to 50% of total mass) reach 1148 F g(-1) and 3141 mF cm(-2), respectively. Our MnO2-coated PCFs outperform other MnO2-based electrodes at similar loadings, highlighting the great promise of block copolymers for designing PCF supports for electrochemical applications. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458175700001 |
WOS关键词 | MANGANESE OXIDE ; ASYMMETRIC SUPERCAPACITOR ; ELECTROCHEMICAL CAPACITORS ; MNO2 ELECTRODE ; PERFORMANCE ; CARBON ; GRAPHENE ; DESIGN ; THERMODYNAMICS ; DEPOSITION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203283 |
专题 | 资源环境科学 |
作者单位 | 1.Virginia Tech, Dept Chem, Blacksburg, VA 24061 USA; 2.Virginia Tech, Macromol Innovat Inst, Blacksburg, VA 24061 USA; 3.Virginia Tech, Div Neurosci, Blacksburg, VA 24061 USA |
推荐引用方式 GB/T 7714 | Liu, Tianyu,Zhou, Zhengping,Guo, Yichen,et al. Block copolymer derived uniform mesopores enable ultrafast electron and ion transport at high mass loadings[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Liu, Tianyu,Zhou, Zhengping,Guo, Yichen,Guo, Dong,&Liu, Guoliang.(2019).Block copolymer derived uniform mesopores enable ultrafast electron and ion transport at high mass loadings.NATURE COMMUNICATIONS,10. |
MLA | Liu, Tianyu,et al."Block copolymer derived uniform mesopores enable ultrafast electron and ion transport at high mass loadings".NATURE COMMUNICATIONS 10(2019). |
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