Interfacial‐Aligned and High Conductive 1T‐MoS2@Ti3C2Tx Heterostructure Nonwoven Fabric for Robust Deformable Supercapacitors

Abstract With the urgent demand for wearable electronics and smart textiles in modern society, fabric‐based supercapacitors (FSCs) have attracted increasing attention due to their easy wearable integration, high power density, and long‐term stability. However, the low energy density and deformable capability of energy supply cause the limitations of actual applications. Here, a 1T‐MoS 2 @Ti 3 C 2 T x heterostructure nonwoven fabric (NWF) with high interfacial adhesion, electrical conductivity, and mechanical deformability is developed, which is of great significance for the unitization as an advanced FSCs electrode. Owing to the designed heterostructure with aligned active interface, high conductive network, and in situ interfacial coupling, the 1T‐MoS 2 @Ti 3 C 2 T x NWF exhibits low ion adsorption barrier, fast ion diffusion kinetics, and accelerated electron transport, resulting in large capacitance (425 F g −1 ) and high cycling stability (20 000 cycles) in 1 m H 2 SO 4 electrolyte. Additionally, the corresponding solid‐state asymmetric deformable supercapacitors (D‐SCs) provide a high energy density of 119.3 µWh cm −2 at a power density of 800.8 µW cm −2 , realizing the practical applications for powering electroluminescent device, 2‐D code, and sound‐controlled electronic fan. More importantly, the D‐SCs exhibit robust deformable power‐supply capability, maintaining 82.1%, 84.6%, and 89.9% capacity retentions after 2000 cycles of folding, twisting, and bending conditions, respectively.