fig4

Arginine modification of hybrid cobalt/nitrogen <InlineParagraph>Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub></InlineParagraph> MXene and its application as a sulfur host for lithium-sulfur batteries

Figure 4. (A) Schematic illustration of the fabrication of the Co-N@Ti3C2TX-Arg/S electrodes for Li-S batteries. (B) Rate performances of the Co-N@Ti3C2TX-Ser/S, Co-N@Ti3C2TX-Lys /S, and Co-N@Ti3C2TX-Arg/S electrodes. (C) Long-term cycling of the Co-N@Ti3C2TX-Ser/S, Co-N@Ti3C2TX-Lys/S, and Co-N@Ti3C2TX-Arg/S electrodes. (D) CEs of the Co-N@Ti3C2TX-Ser/S, Co-N@Ti3C2TX-Lys /S and Co-N@Ti3C2TX-Arg/S electrodes at different rates. (E) Nyquist plots of the Co-N@Ti3C2TX-Ser/S, Co-N@Ti3C2TX-Lys /S and Co-N@Ti3C2TX-Arg/S electrodes, and the inset shows the equivalent circuit and fitted results. (F) Decay rates of the Co-N@Ti3C2TX-Ser/S, Co-N@Ti3C2TX-Lys/S and Co-N@Ti3C2TX-Arg/S electrodes.

Microstructures
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