Mass-transport-controlled, large-area, uniform deposition of carbon nanofibers and their application in gas diffusion layers of fuel cells
文献类型：期刊论文
| 作者 | Tang, Xian1; Xie, Zhiyong1; Huang, Qizhong1; Chen, Guofen1; Hou, Ming2; Yi, Baolian2 |
| 刊名 | nanoscale
 |
| 出版日期 | 2015 |
| 卷号 | 7期号:17页码:7971-7979 |
| 英文摘要 | the effect of mass transport on the growth characteristics of large-area vapor-grown carbon nanofibers (cnfs) was investigated by adjusting the substrate deposition angle (a). the catalyst precursor solution was coated onto one side of a 2d porous carbon paper substrate via a decal printing method. the results showed that the cnfs were grown on only one side of the substrate and a was found to significantly affect the growth uniformity. at alpha = 0 degrees, the growth thickness, the density, the microstructure and the yield of the cnf film were uniform across the substrate surface, whereas the growth uniformity decreased with increasing a, suggesting that the large-area cnf deposition processes were mass-transport-controlled. computational fluid dynamics simulations of the gas diffusion processes revealed the homogeneous distributions of the carbon-source-gas concentration, pressure, and velocity near the substrate surface at alpha = 0 degrees, which were the important factors in achieving the mass-transport-limited uniform cnf growth. the homogeneity of the field distributions decreased with increasing a, in accordance with the variation in the growth uniformity with a. when used as a micro-porous layer, the uniform cnf film enabled higher proton exchange membrane fuel cell performance in comparison with commercial carbon black by virtue of its improved electronic and mass-transport properties confirmed by the electrochemical impedance spectroscopy results. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, multidisciplinary ; nanoscience & nanotechnology ; materials science, multidisciplinary ; physics, applied |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science ; physics |
| 关键词[WOS] | chemical-vapor-deposition ; micro-porous layer ; microporous layer ; water transport ; catalytic decomposition ; impedance spectroscopy ; graphite nanofibers ; oxygen reduction ; epitaxial growth ; graphene oxide |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000353981700056 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146216]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Fuel Cells, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Xian,Xie, Zhiyong,Huang, Qizhong,et al. Mass-transport-controlled, large-area, uniform deposition of carbon nanofibers and their application in gas diffusion layers of fuel cells[J]. nanoscale,2015,7(17):7971-7979. |
| APA | Tang, Xian,Xie, Zhiyong,Huang, Qizhong,Chen, Guofen,Hou, Ming,&Yi, Baolian.(2015).Mass-transport-controlled, large-area, uniform deposition of carbon nanofibers and their application in gas diffusion layers of fuel cells.nanoscale,7(17),7971-7979. |
| MLA | Tang, Xian,et al."Mass-transport-controlled, large-area, uniform deposition of carbon nanofibers and their application in gas diffusion layers of fuel cells".nanoscale 7.17(2015):7971-7979. |
入库方式： OAI收割
来源：大连化学物理研究所
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