Free-standing nitrogen-doped carbon nanofiber films as highly efficient electrocatalysts for oxygen reduction
文献类型：期刊论文
| 作者 | Liu D ; Zhang XP ; Sun ZC ; You TY |
| 刊名 | nanoscale
 |
| 出版日期 | 2013 |
| 卷号 | 5期号:20页码:9528-9531 |
| 关键词 | METAL-FREE ELECTROCATALYSTS ORDERED MESOPOROUS CARBONS DENSITY-FUNCTIONAL THEORY LARGE-SCALE PRODUCTION GRAPHENE NANOTUBES PHOSPHORUS MECHANISM ALKALINE ARRAYS |
| ISSN号 | 2040-3364 |
| 通讯作者 | you ty |
| 中文摘要 | free-standing nitrogen-doped carbon nanofiber (ncnf) films based on polyacrylonitrile (pan) were prepared simply by the combination of electrospinning and thermal treatment. we reused the nitrogen-rich gas generated as the byproduct of pan at elevated temperature, mainly nh3, for surface etching and nitrogen doping. the as-obtained ncnfs exhibited a rougher surface and smaller diameter than pristine carbon nanofibers. despite the decreased total n content, a significant increase in the content of pyrrolic-n was observed for the ncnfs. in application to electrochemistry, the free-standing ncnf films showed comparable catalytic activity with a close four-electron pathway to a commercial pt/c catalyst in alkaline medium toward oxygen reduction reaction (orr), which can be attributed to the nitrogen doping and high hydrophilicity. more importantly, the orr current density on the ncnfs only dropped 6.6% after 10 000 s of continuous operation, suggesting an enhanced long-time durability. in addition, the ncnfs also showed better electrocatalytic selectivity than pt/c. our work reveals a facile but efficient approach for the synthesis of free-standing ncnf films as a promising alternative to pt-based electrocatalysts in fuel cells. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000325005500007 |
| 公开日期 | 2014-04-16 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50179]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu D,Zhang XP,Sun ZC,et al. Free-standing nitrogen-doped carbon nanofiber films as highly efficient electrocatalysts for oxygen reduction[J]. nanoscale,2013,5(20):9528-9531. |
| APA | Liu D,Zhang XP,Sun ZC,&You TY.(2013).Free-standing nitrogen-doped carbon nanofiber films as highly efficient electrocatalysts for oxygen reduction.nanoscale,5(20),9528-9531. |
| MLA | Liu D,et al."Free-standing nitrogen-doped carbon nanofiber films as highly efficient electrocatalysts for oxygen reduction".nanoscale 5.20(2013):9528-9531. |
入库方式： OAI收割
来源：长春应用化学研究所
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