Aqueous Zn-ion batteries have aroused much attention recently, yet challenges still exist in the lack of low-cost, highly stable electrolytes to tackle the serious side reactions at Zn anode-electrolyte interface. Herein, a ZnSO 4based low-cost aqueous electrolyte is demonstrated with a small amount of eco-friendly silk peptide as an efficient additive. Compared with silk sericin and fibroin, silk peptide with abundant strong polar groups (COOH and NH 2 ) suppresses the side reactions. Namely, silk peptide regulates the solvation structure of Zn 2+ to decrease coordinated active H 2 O and SO 4 2− , and tends to anchor on Zn anode surface for the isolation of contact H 2 O/SO 4 2− as well as electrostatic shielding, demonstrating synergistic solvation and interface regulating effect. Consequently, the excellent cycle life (3000 h) and Coulombic efficiency (99.7%) of Zn anodes are revealed in 2 m ZnSO 4 electrolyte with only 5 mg mL −1 of silk peptide (≈0.49 USD L −1 ), promising practical applications of reversible zinc-ion batteries.
Sweating during exercise, physical labor, or hot weather leads to a feeling of discomfort. The stuffiness, stickiness, and heaviness brought by sweat may promote negative emotions or disease. Clothing, textiles, and wearable devices exacerbate these problems by restricting evaporation of sweat. Here, a textile that can promote and enhance sweat evaporation by coupling wicking and polarization is reported. The wicking is produced by the wettability gradient and pore size, which make the surface moisture content of the textile in contact with the skin strictly 0%. The polarization is driven by a ferroelectric‐enhanced triboelectric textile. This textile degrades large‐sized water clusters into small‐sized water clusters or water monomers, so that the textiles have an excellent moisture evaporation rate (4.4 and 3.6 times faster than the cotton and polyester textiles, respectively). This work provides a new source of inspiration for quick‐drying textiles and also finds an attractive application for triboelectric technology.
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