Nearly half of the capacity is available in the high‐voltage plateau region, adjoining the cut‐off voltage. The Nyquist plots after 10 cycles (Figure 2c ) show an obvious trend: the higher the electrolyte concentration the lower the charge‐transfer resistance, as evidenced by the smaller radius of the first semicircle when concentration increases (DIB‐3<DIB‐1<DIB‐05).
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