the voltage difference (ΔE) is 0.348 V. The Ni 2+ /Ni 4+ anodic and cathodic peaks of the Mo/F-2 sample correspond to 4.879 V and 4.578 V, respectively, and the ΔE value is 0.301 V. Typically, the potential difference (ΔE) between the anode peak and the cathode peak reflects the electrochemical polarization [47].MO/F-2样品的ΔE值小于原始样品,表明MO/F-2样品中的锂插入/提取动力学更快。结果与上述速率性能测试结果一致,表明适当量的MO-F共同掺杂可以帮助减少极化,从而提高LNMO材料的速率能力。
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