電極反應動力學燃料電池-資料下載頁
2025-05-03 18:43本頁面
【正文】 eeds the exchange current, the job is much harder. We have to drive the system to deliver charge at the required rate, and we can only do that by applying a significant overpotential. ? From this perspective, we see that the exchange current is a measure of any system39。s ability to deliver a current without a significant energy loss due to activation. Towards a Sustainable Energy Future Approximate Forms of the iη Equation ? (2) Linear Characteristic at Small η ? For small values of x, the exponential ex can be approximated as 1 + x Towards a Sustainable Energy Future Approximate Forms of the iη Equation (3) Tafel Behavior at Large η at large negative overpotentials, exp(αf η) exp[(l α)f η] Towards a Sustainable Energy Future Approximate Forms of the iη Equation ? Tafel Plots Towards a Sustainable Energy Future Towards a Sustainable Energy Future Exchange Current Plots Towards a Sustainable Energy Future Very Facile Kiics and Reversible Behavior When i0 bees very large pared to any current of interest, The ratio i/i0 then approaches zero Towards a Sustainable Energy Future Towards a Sustainable Energy Future Effect of Mass Transfer Towards a Sustainable Energy Future
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