The fabrication of robust superhydrophobic 3D porous materials is great importance for both academic research and industrial applications. main challenge the poor adhesion between substrates coatings. In this study, a polysiloxane layer was coated onto surface polyurethane sponges through one-step solution immersion method. durability resulting investigated by repeated mechanical compressions, ultrasonication in polar solvents, strong acid/alkali attacks. Results revealed that showed...

The development of a convenient method for the removal (or collection) oils and organic solvents from water surface is great significance environmental protection, especially cleanup oil spillage on seawater. A major challenge fabrication an absorber with high absorption capacity, low cost, scalable fabrication, selectivity, excellent recyclability. In this paper, we present simple collection surfaces based superhydrophobic superoleophilic sponges that were fabricated by solution-immersion...

Immobilization of various nanoparticles onto complex 2D or 3D macroscopic surface is an important issue for nanotechnology, but the challenge remains to explore a facile, general and environmentally friendly method achieving this goal. Taking inspiration from adhesion marine mussels, we reported here that oxide different compositions sizes were directly robustly anchored on monolithic foams ranging polymer metals in aqueous solution dopamine. The effective immobilization was strongly...

Ultralow-density (<10 mg cm(-3)) materials have many important technological applications; however, most of them were fabricated using either expensive or complicated procedures. In this study, ultralight magnetic Fe2O3/C, Co/C, and Ni/C foams (with a density <5 on the centimeter scale by pyrolyzing commercial polyurethane sponge grafted with polyelectrolyte layers based corresponding metal acrylate at 400 °C. The consisted 3D interconnected hollow tubes that diameter micrometer nanoscale...

Excellent self-healability and cold resistance are attractive properties for a portable/wearable energy-storage device. However, achieving the features is fundamentally dependent on an intrinsically self-healable electrolyte with high ionic conduction at low temperature. Here we report such hydrogel comprising sodium alginate cross-linked by dynamic catechol-borate ester bonding. Since its dynamically network can tolerate high-content inorganic salts, possesses excellent healing...

The removal of oil spills or organic contaminants from water surface is great technological importance for environmental protection. A major challenge the fast distribution and collection absorbent materials with high separation selectivity, good thermal stability, excellent recyclability. Here we reported selective oils through core−shell Fe2O3@C nanoparticles under magnetic field. These combined unsinkable, highly hydrophobic superoleophilic properties, could selectively absorb lubricating...

In this study, three-dimensionally macroporous Fe/C nanocomposites were investigated as highly selective absorption materials for removing oils from water surface. The synthesized by sintering a mixture of closely packed polystyrene microspheres and ferric nitrate precursor. These exhibited superhydrophobic superoleophilic properties without the modification low-surface-energy chemicals. And pore size nanocomposites, which is crucial oil-absorption capacity, was tuned varying diameter...

Self‐healing will greatly improve the reliability of an energy‐storage device in case physical damage, but challenge remains assembling such a smart capable repairing all its electroactive components simultaneously. Here, omni‐healable supercapacitor that can spontaneously repair electrolyte, electrodes, and even interfaces between them ambient conditions after mechanical damage is reported. The goal achieved by integrating electrolyte electrode materials into dynamic poly(vinyl...

Walking on the water surface is a dream of humans, but it exactly way life for some aquatic insects. In this study, bionic microrobot capable walking like strider was reported. The novel strider-like robot consisted ten superhydrophobic supporting legs, two miniature dc motors, and actuating legs. could not only stand effortlessly also walk turn freely surface, exhibiting an interesting motion characteristic. A numerical model describing interface between partially submerged leg air–water...

A self-healable polyvinyl alcohol-based hydrogel electrolyte is synthesized for smart electrochemical capacitors with self-healing and tailorable characteristics.

To harness the electroactivity of anthraquinone as an electrode material, a great recent effort have been invested to composite with carbon materials improve conductivity. Here we report on noncovalent way modify three-dimensional graphene moieties through on-surface synthesis two-dimensional covalent organic frameworks. We incorporate 2,6-diamino-anthraquinone into COF Schiff-base reaction benzene-1,3,5-tricarbaldehyde. The synthesized -graphene exhibits large specific capacitance 31.7...

A highly compressible and stretchable superhydrophobic coating was fabricated using layer-by-layer deposition of Ag nanoparticles polydopamine.

Excellent self-healability and renewability are crucial for the development of wearable/flexible energy-storage devices aiming advanced personalized electronics. However, realizing low-temperature self-healing harmless regeneration remains a big challenge existing devices, which is fundamentally limited by conventional polymeric electrolytes that intrinsically neither cryo-healable nor renewable. Here, we rationally design multifunctional polymer electrolyte on basis copolymer vinylimidazole...

Zinc-ion batteries are promising power sources, but their practical application is impeded by the Zn dendrite growth and side reactions at electrode/electrolyte interface. Here, we report that such issues can be effectively addressed a self-healable hydrogel electrolyte. The electrolyte comprised of carboxyl-modified poly(vinyl alcohol) cross-linked COO–Fe bonding in presence Zn(NO3)2 MnSO4. A quasi-solid-state Zn–MnO2 battery using delivers specific capacity up to 177 mAh g–1 after 1000...

A novel kind of miniature boat that might have many potential applications was fabricated from superhydrophobic copper meshes for the first time. These boats not only floated freely on a water surface but also exhibited striking loading capacities. By selection pore size meshes, capacity greater than 11.0 g could be readily achieved 8.0 cm3 in volume. The large is believed to arise air film surrounding surfaces boats. results this study present new artificial areas aquatic devices.

Improving the lithium storage properties of a Si negative electrode is great significance for ion batteries. A major challenge to fabricate Si-based active materials with good electronic conduction and structural integrity in process discharging charging. In this study, nanoparticles are covalently bound surface graphene sheets via aromatic linkers through diazonium chemistry. The resulting Si–Ph–G nanocomposite delivers delithiation capacity 1079 828 mAh g−1 initial 50th cycle at current...

The ZnFe₂O₄@C/G nanocomposite, exhibiting excellent lithium storage performance, was synthesized through a mussel-inspired process and subsequent calcinations.

This study reported for the first time a novel microrobot that could continuously jump on water surface without sinking, imitating excellent aquatic locomotive behaviors of strider. The robot consisted three supporting legs and two actuating made from superhydrophobic nickel foam driving system included miniature direct-current motor reduction gear unit. In spite weighing 11 g, jumped 14 cm high 35 long at each leap. order to better understand jumping mechanism surface, variation forces...

Miniaturized synthesis is attracting much attention due to many potential applications; a challenge remains in exploring versatile microreactors capable of producing pure products. In this study, we reported kind thermally robust liquid marbles and their application for miniaturized graphene/Ag nanocomposite. The were constructed by using superhydrophobic Fe3O4/C microsheets as encapsulating agents. Results revealed that the morphology agent well humidity atmosphere strongly affected...

A novel self-healable superhydrophobic aerogel can recover its wettability, microstructure and macroscopic configuration simultaneously after physical or chemical damage.