choice for remote areas that have sufficient sunlight. [13][14][15][16][17] However, the main drawback of harvesting light energy is its limitations when operating in dirty or low-light conditions. In this case, wind and rain can be a substitute for natural resources. [18][19][20][21] Traditional hydroelectric power plants require proper land and large capital assets to construct barrages and can be harmful to the environment. Wind turbines have limitations such as complex wind directions, high costs, and large volumes. [22,23] Additionally, conventional generators are created on weighty, rigid, and unbending materials. [24][25][26] The development of local energy harvesters is highly anticipated due to their small volumes, adjustable shapes, costfriendliness, and broad applicability. [27][28][29][30] Human body motions, such as shaking limbs, walking, running, jumping, and breathing, are vibration sources that have attracted the attention of many scholars for energy-harvesting applications. [31][32][33][34] Fabric-based triboelectric nanogenerators (TENGs) have been highlighted for their wearability/portability, environmental friendliness, mechanical stability, and flexibility. These nanogenerators can effectively harvest energy without inhibiting human motion or the environment. In addition, TENGs have outstanding energy conversion efficiencies, low manufacturing costs, and simple structures. TENGs are based on the coupling between the triboelectric effects wherein electrification and charge transfer occur based on contact-separation, sliding, or friction between two dissimilar materials (polymers and metals) depend on the electrostatic induction and triboelectric series. [35][36][37] Fabrics have been used since the dawn of humankind and are important to everyday life. Fabrics are portable, bendable, foldable, rollable, and can be adjusted to our regular environment. [38,39] J. Xiong et al. reported a fabric-based TENG that harvests energy from the water flow. [40] However, water molecules that adhere to the harvester surface can prevent the triboelectric effect and critically inhibit the abilities of TENGs, indicating that the fabric would benefit from a difficult hydrophobicity method. [41] Most conventional and fabric-based TENGs can only harvest energy from one selected source. [42,43] Some research groupsThe triboelectric material properties and mechanical stability of the contact layer are vital to achieving durable triboelectric nanogenerators (TENGs) with high output performance. Herein, a novel MXene/Ecoflex nanocomposite is introduced as a promising triboelectric material because of its highly negative triboelectric properties and mechanical stability. The MXene/Ecoflex nanocomposite with a fabric-based waterproof TENG (FW-TENG) is fabricated and designed to universally harvest energy from various human motions as well as the natural environment (rain and wind). The fabricated FW-TENG delivers a maximum output peak power of 3.69 mW and a power density of 9.24 W m −2 , respectively, at a matching load...
