電極反應動力學燃料電池(更新版)
【正文】 The Transfer Coefficient In most systems a turns out to lie between and , and it can usually be approximated by in the absence of actual measurements. Towards a Sustainable Energy Future The transfer coefficient ? a should generally be a potentialdependent factor。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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