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標題: 具濃差之奈米流道離子傳輸及其在能源開發應用之探討
Ionic Transport in Nanochannel with Concentration Gradient and Its Application in Power Generation
作者: 簡瑞與
關鍵字: 機械工程類;應用研究;Nanochannel;ion exchange membrane;current-voltage curve;reverse electrodialysis;and electricity generation

Most of the previous studies on the ion transport through nanochannels focused on thesituation that nanochannel is connected with large reservoirs filled with electrolyte. The bulkconcentrations of the electrolyte are equal and motionless. In practical applications,nanochannel must be connected with finite-sized channel for flow supply. Under such case,the electrolytes on both ends of nanochannel may have different bulk concentration andvelocity. In the proposed project, we will focus on exploring more understanding on theeffects of concentration gradient and electrolyte flow on the ion transport through thenanochannel. The effects of electrolyte concentration ratio, flow velocity, pH value, and sizeof electrolyte compartment on the current-voltage curve will be examined both experimentallyand numerically to identify the ion transport characteristics. For the experiments, the ionexchange membrane will be employed to emulate the nanochannel array while single chargednanopore will be used in the physical domain.As the electrolytes with different concentrations are brought in contact or separated by ionexchange membrane, an electric potential is established. Based on the reverse electrodialysis,electricity can be harvested from this electric potential. The electricity generation based onreverse electrodialysis is the reversed operation as the current-voltage measurement describedabove. Therefore, the experimental setup and numerical model built will be extended toconstruct an electricity harvesting device based on reverse electrodialysis. The effects ofelectrolyte concentration ratio, flow velocity, pH value, size of electrolyte compartment, andconcentration of redox couples used for electron transport on the electricity generationefficiency will be examined both experimentally and numerically.
其他識別: NSC100-2221-E005-052
Appears in Collections:機械工程學系所

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