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Although rechargeable zinc‐ion batteries are promising candidates for next‐generation energy storage devices, their inferior performance at subzero temperatures limits their practical application. Here, a strategy to destroy the H‐bond network by adding synergistic chaotropic regents is reported, thus reducing the freezing point of the aqueous electrolyte below −90 °C. Owing to the synergistic chaotropic...
Some new insights into traditional metal pretreatment of anticorrosion for high stable Zn metal anodes are provided. A developed pretreatment methodology is employed to prefer the crystal plane of polycrystalline Zn and create 3.26 µm protective coatings mainly consisting of organic polymers and zinc salts on Zn foils (ROZ@Zn). In this process, Zn metal exhibits a surface‐preferred (001) crystal plane...
A fast ion conductor, NaTi2(PO4)3 (NTP), is hydrothermally synthesized as a solid‐state electrolyte protection layer on the surface of Zn anodes (NTP@Zn). NTP has fast ionic conductivity compared with other insoluble phosphates, such as TiP2O7 (TPO) and Zn3(PO4)2 (ZPO), which is demonstrated by the density‐functional theory calculation and cyclic voltammetry tests. X‐ray photoelectron spectrometer,...
The practical application of aqueous rechargeable batteries is hampered by the low energy density and poor cycle stability, which mostly arises from the corrosion of cathode current collector, exfoliation of active material, and narrow electrochemical stability window of aqueous electrolyte. A light‐weight and low‐cost cathode current collector composed of graphite and carbon nanotube coated on nylon...
Aqueous rechargeable Zn/birnessite batteries have recently attracted extensive attention for energy storage system because of their low cost and high safety. However, the reaction mechanism of the birnessite cathode in aqueous electrolytes and the cathode structure degradation mechanics still remain elusive and controversial. In this work, it is found that solvation water molecules coordinated to...
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