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Cancer is currently drawing more and more attention worldwide as the leading factor of death worldwide. However, few research directed towards the mechanical properties of cancer cells treated by targeted...

Aqueous Zn-ion batteries have long been considered as a promising substitute for Li-ion batteries due to their low cost, improved safety, and better environmental sustainability. However, the unsatisfactory energy/power density and inferior cycling ability are the two key obstacles of the aqueous nickel−zinc (Ni−Zn) battery, mainly due to the low capacity and serious irreversibility of its Ni-based cathode. To solve these issues, femtosecond laser texturing along with chemical bath deposition was performed to synthesize a 3D hierarchical NiO@Ni(OH) 2 composite structure on a nickel foil as an ultrahigh performance cathode for the Ni−Zn battery. Compared with the nickel foil treated only by chemical bath deposition (denoted as NN@NF), the areal capacity of the Ni foil treated by femtosecond laser texturing and the chemical deposition technique (denoted as NN@LTNF) was substantially improved, achieving 0.593 mA h cm −2 at 10 mA cm −2 . Moreover, the as-prepared NN@LTNF//Zn battery demonstrated an ideal peak energy density (0.586 mW h cm −2 ) and power density (86.7 mW cm −2 ). Particularly, the NN@LTNF//Zn battery could deliver outstanding reversibility and excellent cycling durability (90.2% capacity retention after 1800 cycles). The prominent improvement of electrochemical performance can be attributed to the NiO@Ni(OH) 2 composite structure with 3D network morphology and superhydrophilic property, which can facilitate electrolyte penetration and thus ion mobility to active reaction sites. This research may provide promising vistas for laserprocessed advanced Ni-based cathodes in ultrahigh electrochemical performance aqueous Ni−Zn batteries.

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