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Çë´ó¼Ò¿´¿´ÒÔÏµĹ«Ê½£º he inclined lines in the low frequency range are attributed to a Warburg impedance, which may be associated with lithium-ion diffusion within the LiFePO4 electrode. . From the inclined lines in the Warburg region, the lithium-ion diffusion coefficient may be estimated using the following equation: D = (R2T2)/(2A2n4F4C22) Where R is the gas constant, T is the absolute temperature, A is the surface area of the cathode, n the number of electrons per molecule during oxidization, F the Faraday constant, C the concentration of lithium-ion (7.69 ¡Á 10−3 mol cm−3), ÇëÎÊ C ÊÇÈçºÎËã³öÀ´µÄ£¬Ð»Ð»°¡£¬±¾È˼ÆËãºÜ¾ÃÁË£¬ºÜÃÔ㣬Çë³æ³æ°ï°ï¡££¨¹«Ê½¿¼¹ýÀ´ÉÏϱêÓÐÎÊÌ⣬Ӧ¸Ã²»Ó°ÏìÎÒÏëÎʵÄÎÊÌ⣩ |
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