【摘要】 对LiFePO4和MCMB电极在不同温度下的脱嵌锂行为进行了对比研究。采用循环伏安、交流阻抗和充放电测试解析了LiFePO4和MCMB电极低温下的电化学行为。结果表明:影响电池低温充放电性能的主要过程为LiFePO4和MCMB电极的嵌锂行为,其原因主要归因于低温下较大的电荷转移阻抗。更多还原

【Abstract】 Intercalation and deintercalation behavior of LiFePO4 and MCMB electrodes under-20℃,0℃ and room temperature were comparatively investigated.Low temperature properties of LiFePO4 and MCMB electrodes were analyzed by cyclic voltammetry,AC impedance and charge/discharge techniques.The results showed that the limited factors affecting the low-temperature performance was intercalation process,which was mainly ascribed to the larger charge transfer resistance in the insertion process of lithium ion.更多还原