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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Transformation of sludge Si to nano-Si/SiOx structure by oxygen inward diffusion as precursor for high performance anodes in lithium ion batteries

Fig. 4

Electrochemical performance. a Discharge capacity and coulomb efficiency cycling performance of this Si/C composite at rate of 100 mA/g and comparison with control sample. b Voltage profile of this Si/C composite at 1st, 10th, and 100th cycles. c CV curves of the first 5 cycles of this Si/C composite electrode. d Nyquist plots of the Si/C composite electrodes after several tens cycles at the discharged state

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