Figure 3

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Electrochemical performance of NCM622, NM64 and Co-NM64. (a) Rate capability of NCM622, NM64 and Co-NM64 within a voltage range of 2.7–4.5 V versus Li/Li+ (1 C = 180 mA g–1). (b) Discharge curves of NM64 and Co-NM64 at different current densities. (c) Discharge curves of the GITT measurements at a current density of 0.1 C. (d) 1 C cycling of NCM622, NM64 and Co-NM64 in the range of 2.7–4.5 V versus Li/Li+. (e) 1 C cycling of NCM622, NM64 and Co-NM64 in the range of 2.7–4.3 V versus Li/Li+. (f) Initial dQ/dV curves of NCM622, NM64 and Co-NM64 at a current density of 0.1 C. (g) Comparison of the specific capacity and capacity retention between the Co-NM64 and typical cathodes previously reported for LIBs in the half cell.
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