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[求助]
反电渗析功率测量
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有做反电渗析的前辈吗?我想请教一下反电渗析装置测功密度的具体操作是怎样的啊?参考文献:OCV was measured for 180 s to ensure a steady state, followed by the adjustment of the current level as follows:1, 2, ..., 60 mA (steps of 1 mA). The corresponding voltage was measured with an interval of 1 s to draw the I−V plot. From the obtained I−V plot, the stack resistance was calculated using Ohm’s law (R = V/I).或者Electrochemical measurements: The performance of the membranes was evaluated using an Ivium potentiostat (Ivium Technologies, The Netherlands) in the chronopotentiometry mode. At each flow rate, 20 current steps (0, 2, 4 … 40 Am12) for 30 seconds each were applied. All measurements were performed at least three times. From the measured voltage (E)–current (I) curves, the gross power output was calculated as the maximum of the product from E and I. 我用电化学工作站测试的时候发现当给定电流使得电池放电电流为0.1mA 0.2mA 。。。。1mA低放电电流时,电池电阻可以达到400多,当控制放电电流为3mA 4mA 5mA。。。10mA时电池电阻为40-50,我用的是3膜4室(一浓一淡两极化室),请问我如何才能准确的测量反电渗析池工作室的功率密度。非常感谢! |
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