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On‐skin electronics require minimal thicknesses and decent transparency for conformal contact, imperceptible wearing, and visual aesthetics. It is challenging to search for advanced ultrathin dielectrics capable of supporting the active components while maintaining bending softness, easy handling, and wafer‐scale processability. Here, self‐delaminated aramid nanodielectrics (ANDs) are demonstrated,...
Defect‐rich carbon materials are considered as one of the most promising anodes for potassium‐ion batteries due to their enormous adsorption sites of K+, while the realization of both rate capability and cycling stability is still greatly limited by unstable electrochemical kinetics and inevitable structure degradation. Herein, an Fe3+‐induced hydrothermal‐pyrolysis strategy is reported to construct...
With the energy shortage and the increasing awareness of environmental protection, piezoelectric nanogenerator (PENG) has been widely studied in recent years. Polyvinylidene fluoride hexafluoropropylene (P(VDF‐HFP)) is an ideal matrix material because of its piezoelectricity, flexibility, and toughness. Herein, a composite film of carbon nanotubes (CNTs), Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT), and P(VDF‐HFP)...