Fig. 1: Fabrication flow to achieve ultrastrong MXene composite fibers.

a Illustration of the fabrication of MXene-carbon nanotubes (CNTs)-polylactic acid (PLA) (MCP) fiber by the combination of static filling method and dynamic thermal drawing with an in situ generated encapsulation layer through the hydrogen bonds between CNTs and MXene nanosheets, and PLA and MXene nanosheets, while the pure MXene fiber (MX) with lots of voids generated from transverse wrinkles during the wet spinning. b The shear stress distribution in the axial center of the spinning tube along the Y-axis, according to finite element analysis (FEA) simulation. c The required stress was to compact the transverse wrinkles nanosheets sufficiently to reduce voids, obtained from the dynamic FEA simulation. d Photograph of the kilometer-scale MCP fiber, extending to a length of thousands of meters. e Star plot of tensile strength, toughness, specific strength, Young’s modulus, and electrical conductivity of MXene composite fibers, including MX, MXene-CNTs (MC), MCP, and MCP-V. f Illustration of the smart wireless textiles incorporating various spiral inductors textile based on MCP fiber, featuring sensing, and storage units, along with MCP-vinyl silicone-acetoxy silicone resin (VSASR)-ZnS-Cu²⁺ (MCP-V) textiles for remote control of the drone and assisted communication.