*4.1.3 The fabrication of MWCNTs/Li half-cells and lithium-ion capacitors*

The tailored MWCNTs/graphite anodes were used as working electrodes. Lithium foil was used as the counterelectrode and Celgard 2300 was used as the separator. The solution of 1.0 M LiPF6 in EC:DMC (1:1, vol.) was utilized as the electrolyte. Based

on the content of MWCNTs, the half-cells were signed as CNT0, CNT25, CNT50, CNT75, and CNT100, respectively. The two-electrode LICs were assembled with AC cathode and MWCNTs anode, and the corresponding LICs were recorded as LIC0, LIC25, LIC50, LIC75, LIC100. All cells were assembled in an argon-filled glove box.
