A NOVEL ANODE IN HIGH-PERFORMANCE LITHIUM-ION BATTERY BASED ON ADVANCED NANOMATERIALS AND NANOFABRICATION TECHNOLOGY

We report a novel anode with silicon nanoparticles (SiNPs) enclosed in the cross-linked network of Ti3C2Tx, one of the typical two-dimensional transition metal carbides (MXenes), which can encapsulate SiNPs as well as providing void space for the expansion of SiNPs during lithiation. Moreover, the intrinsically high electron conductivity of MXenes provides conductive channels to improve the electrode dynamics and greatly enhance the cycle performance of the lithium-ion battery. The nanostructure of SiNPs@MXenes composite formed by vacuum filtration and pyrolysis for the first time demonstrates the anode with extraordinary conductivity, stability and adaptability. These properties make the structure a great candidate for anodes of the lithium-ion batteries. It exhibits a superior capacity of 734,95 mAh g(-1) after first five cycles and remains excellent cycling stability of 564.82 mAh g(-1) after 50 cycles, which is significantly higher than that of commercial graphite anode (370mAh g(-1)).