https://scholars.lib.ntu.edu.tw/handle/123456789/424533
Title: | A mechanical-electrokinetic battery using a nano-porous membrane | Authors: | MING-CHANG LU Lu M.-C. Satyanarayana S. Karnik R. Majumdar A. Wang C.-C. |
Issue Date: | 2006 | Journal Volume: | 16 | Journal Issue: | 4 | Start page/Pages: | 667-675 | Source: | Journal of Micromechanics and Microengineering | Abstract: | This study conducts an analytical and experimental investigation associated with energy transfer by using a nano-porous membrane. The calculated results indicate that the streaming potential held at a saturated value when the electrolyte concentration is below a certain critical value. After passing this threshold value, the streaming potential decays dramatically with the electrolyte concentration. The efficiency increased with an increase of surface charge density and with a decrease of concentration. Generally, higher maximum efficiency can be achieved at a smaller channel. However, as the pore diameter is varied, a maximum efficiency is encountered. The results indicate that the battery performance can be efficiently improved by the unipolar characteristic inside the nano-sized channel. Our experimental results verify the analytical results; the best efficiency obtained is 0.77% in our experiments at a nominal 200 nm pore size alumina membrane having a 2.1 cm diameter and a 60 £hm thickness. The maximum output energy is 18 £hW by using a nominal 20 nm pore size alumina membrane. ? 2006 IOP Publishing Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/424533 | ISSN: | 09601317 | DOI: | 10.1088/0960-1317/16/4/001 |
Appears in Collections: | 機械工程學系 |
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