An analysis of electric double layers near comb electrodes using the linearized Poisson-Nernst-Planck theory
| Autor: | Qin Zhou, Shuting Lu, Chunli Zhang, Li Tan, Jiashi Yang, Weiqiu Chen, Renwei Mao |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed matter physics General Physics and Astronomy Ionic bonding Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Half-cell 0104 chemical sciences Conductor Ion symbols.namesake Physics::Plasma Physics Electrode symbols Nernst equation Electric potential 0210 nano-technology |
| Zdroj: | Journal of Applied Physics. 121:044502 |
| ISSN: | 1089-7550 0021-8979 |
| Popis: | A theoretical analysis on electric double layers formed near corners and neighboring branches of a comb electrode with a prescribed electric potential in an ionic conductor was performed using the linearized Poisson-Nernst-Planck theory which is closely related to the linearized Gouy-Chapman theory in static (time-independent) problems. Analytical solutions were obtained for two problems relevant to ionic capacitance applications defined over rectangular domains. The electric potential and ion distributions were calculated which are new, useful, and fundamental to the understanding and design of devices with comb electrodes. The basic behaviors of the distributions are presented and examined. For a positively charged electrode, the distribution of the negative ions was found to be qualitatively similar to that of the electric potential, and the behavior of the positive ions is the opposite. At an electrode corner, the electric double layer is relatively thicker than along a line electrode. When the distan... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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