Theoretical analysis of the effects of operational and designed parameters on the performance of a flow-through porous electrode
文献类型：期刊论文
| 作者 | You, Dongjiang1,2; Zhang, Huamin1; Chen, Jian1 |
| 刊名 | journal of electroanalytical chemistry
 |
| 出版日期 | 2009-01-15 |
| 卷号 | 625期号:2页码:165-171 |
| 关键词 | Flow-through porous electrode Two-dimensional mathematical model Dimensionless parameters Mass transport Ohmic resistance Kinetics |
| 产权排序 | 1;1 |
| 通讯作者 | 张华民 |
| 英文摘要 | a two-dimensional mathematical model for a flow-through porous electrode, in which the electrolyte flow is perpendicular to the current flow, is presented in this paper. in order to study the effects of ohmic resistance, mass transfer and kinetics on the performance of the porous electrode, a set of dimensionless parameters were imported into the model equations. the results reveal that lower ohmic resistance lead to a more uniform current density distribution, which will get a higher utilization of the electrode; an enhancement in convective mass transport will increase the reaction rate, but the increase is in a diminishing manner due to the limit of diffusion rate, so that the effective reaction layer will get thinner until to a limited value; an increase of local mass transfer coefficient will increase the reaction rate and make the effective reaction layer thinner; and the longer the electrode is, the worse the concentration polarization will be. the model could help to guide the rational design of the porous electrode and the operating parameters. (c) 2008 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, analytical ; electrochemistry |
| 研究领域[WOS] | chemistry ; electrochemistry |
| 关键词[WOS] | fuel-cells ; mass-transfer ; carbon felt ; model ; reactor |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000262947600010 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/102655]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | You, Dongjiang,Zhang, Huamin,Chen, Jian. Theoretical analysis of the effects of operational and designed parameters on the performance of a flow-through porous electrode[J]. journal of electroanalytical chemistry,2009,625(2):165-171. |
| APA | You, Dongjiang,Zhang, Huamin,&Chen, Jian.(2009).Theoretical analysis of the effects of operational and designed parameters on the performance of a flow-through porous electrode.journal of electroanalytical chemistry,625(2),165-171. |
| MLA | You, Dongjiang,et al."Theoretical analysis of the effects of operational and designed parameters on the performance of a flow-through porous electrode".journal of electroanalytical chemistry 625.2(2009):165-171. |
入库方式： OAI收割
来源：大连化学物理研究所
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