Numerical simulation of hydrogen (deuterium) absorption into beta-phase hydride (deuteride) palladium electrodes under galvanostatic conditions
文献类型：期刊论文
| 作者 | Zhang, WS; Zhang, ZL; Zhang, XW; Wu, F |
| 刊名 | JOURNAL OF ELECTROANALYTICAL CHEMISTRY
 |
| 出版日期 | 1999-09-27 |
| 卷号 | 474期号:2页码:123-129 |
| 关键词 | Pd Vertical Bar h Electrode Pd Vertical Bar d Electrode Kinetics |
| ISSN号 | 0022-0728 |
| 英文摘要 | The kinetics of H(D) absorption into a beta-phase PdHx (PdDx) electrode are discussed numerically, based on the Volmer-Tafel route of the hydrogen (deuterium) evolution reaction and thermodynamic and kinetic data of H(D) in the beta-phase PdHx (PdDx). It is found that the asymptotic loading ratio of H(D) is determined only by the Tafel step under galvanostatic conditions. The kinetics of H(D) absorption can be characterised by a parameter lambda proportional to d Delta j/((D) over bar Delta x) where d is the dimension of the electrode (thickness for plate, radii for cylinder or sphere); Delta j is the current density step; (D) over bar is the average diffusion coefficient; Delta x is the loading ratio step of H(D) caused by the current step. If lambda much greater than 1 (large scale of dimension, high current density and/or low temperature), the absorption rate is controlled by diffusion; in contrast, if lambda much less than 1, the rate-determining step is the interface process and the charging efficiency approaches 100%; otherwise, the kinetics are under mixed control if lambda similar to 1. (C) 1999 Elsevier Science S.A. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000083057400004 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/75455]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, WS |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 2.Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China 3.Natl Engn Dev Ctr High Technol Energy Storage Mat, Zhongshan 528437, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, WS,Zhang, ZL,Zhang, XW,et al. Numerical simulation of hydrogen (deuterium) absorption into beta-phase hydride (deuteride) palladium electrodes under galvanostatic conditions[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY,1999,474(2):123-129. |
| APA | Zhang, WS,Zhang, ZL,Zhang, XW,&Wu, F.(1999).Numerical simulation of hydrogen (deuterium) absorption into beta-phase hydride (deuteride) palladium electrodes under galvanostatic conditions.JOURNAL OF ELECTROANALYTICAL CHEMISTRY,474(2),123-129. |
| MLA | Zhang, WS,et al."Numerical simulation of hydrogen (deuterium) absorption into beta-phase hydride (deuteride) palladium electrodes under galvanostatic conditions".JOURNAL OF ELECTROANALYTICAL CHEMISTRY 474.2(1999):123-129. |
入库方式： OAI收割
来源：化学研究所
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