Facile Fabrication of Free-Standing and Flexible Anodes Composed of Entangled N-Doped Carbon Nanotubes for Application in Lithium Ion Batteries

In this work, innate free-standing and degrees exible anode composed of entangled N-doped carbon nanotubes (CNTs) is fabricated by a facile annealing method following a simple compression without needing any tedious processing operations. The well cross-linked CNTs of the resultant free-standing anode enable robust di (R) usion channels for lithium ions and high degrees exibility. Served as the anode in lithium-ion batteries (LIBs) without the utilization of binder and current collector, the fabricated free-standing electrode can deliver a reversible area capacity of 2.14mAhcm similar to 2 at 1mAcm similar to 2 with superior cycling stability and excellent rate capability. The obtained reversible area capacity for the fabricated free-standing electrode material is much higher than that of the commercial graphite anode (similar to 0:6mAhcm similar to 2 at 1mAcm similar to 2). Furthermore, the assembled full degrees exible battery utilizing the fabricated free-standing electrode also exhibits attractive performance and can substantially supply power for an electronic watch at degrees at and 180 similar to bending positions, indicating the promising application in degrees exible electronic devices.