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...

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

Self-healability is a crucial feature for developing artificial superhydrophobic surfaces. Although self-healing of microscopic defects has been reported, the restoration severely damaged surfaces remains technological challenge. Here, we report robust surface possessing ultrafast recoverability after catastrophic damage. The fabricated via integrating its hierarchical texture comprised Super P (a conductive carbon black) and TiO2 nanoparticles into poly(dimethylsiloxane) network...

A mussel-inspired strong and stiff polymer exhibits healability, renewability, anti-flammability solvent-tolerance.

In this study, we report controlled fabrication of flower-like ZnO–Fe2O3 nanostructured films on copper foils and their excellent lithium storage properties. The were fabricated through a method called "partly sacrificed template", which involved immersing ZnO nanorod arrays in 0.1 M aqueous solution ferrous sulfate subsequent calcinations at 350 °C. template was partly dissolved by the acid produced from hydrolysis FeSO4 precursor then initiated construction architecture. resulting not only...

Poor stability is a long-standing problem preventing the practical application of Li metal anodes, which fundamentally attributed to their fragile solid electrolyte interphase (SEI) layers that are intrinsically neither adaptable dynamic volume change nor self-healable after breakage. Here anode effectively stabilized by in situ integrating its SEI layer into polydimethylsiloxane (PDMS) network cross-linked via imine bonding. The self-healing enables integrated readily accommodate but also...

Particulate matter is one of the main pollutants, causing hazy days, and it has been serious concern for public health worldwide, particularly in China recently. Quality outdoor atmosphere with a pollutant emission PM2.5 hard to be controlled; but quality indoor air could achieved by using fibrous membrane-based air-filtering devices. Herein, we introduce nanofiber membranes both protection electrospun synthesized polyacrylonitrile:TiO2 developed polyacrylonitrile-co-polyacrylate:TiO2...

Facile manipulation of a tiny liquid droplet is an important but challenging issue for many miniaturized chemical and biological systems. Here we report that microdroplet can be readily remotely manipulated in aqueous environments under ambient conditions. The encapsulated with photothermal nanoparticles to form marble, subsequently irradiated near-infrared (NIR) laser. marble able ascend, shuttle, horizontally move, even suspend water by simply controlling the laser irradiation. Moreover,...

Self-healability is an attractive feature for next-generation energy-storage devices aiming at flexible/wearable electronics. However, realizing self-healability usually involves complicated molecular design and synthetic processes. Here, we demonstrate that sodium hyaluronate (SH), a kind of natural polysaccharide, can be used as versatile polymer to facile fabricate intrinsically self-healable devices. Self-healable ion batteries asymmetric capacitors are fabricated by integrating their...

A variational principle is established for a moving jet in the electrospinning process to study vibration property of jet. higher accelerated velocity and lower frequency are needed multi-needle system. This paper introduces an auxiliary electrode enhance electric strength, numerical analysis carried out design optimal field.

Aquatic devices that can work on both water and oils have great scientific practical significance, but the challenge remains in developing novel materials with excellent repellence to oils. Here, we report an artificial "strider" float by using supporting legs ultraviolet (UV) switchable wettability. The were fabricated immobilizing TiO2 nanoparticles n-dodecanethiol onto copper foams via a simple mussel-inspired process. At ambient conditions, strider floated freely surface, it dived then...

Smart miniaturized aquatic devices have many important applications, but their locomotion at different interfaces remains a challenge. Here, we report smart submarine moving various air/liquid or oil/water interfaces. The microsubmarine is fabricated by CO2-responsive superhydrophobic copper mesh and driven the Marangoni effect. can not only transfer among reversibly also move horizontally freely. unique of device attributed to CO2-triggered switch between superhydrophobicity underwater...

Relative permeability modifiers (RPMs) are chemicals that can be injected into a reservoir to change its fluid/gas transport characteristics. For example, RPMs reduce the relative water in subterranean while having minimal impact on hydrocarbon production. Most commercially available specifically designed for silica surfaces which dominant sandstone reservoirs. However, concentration of carbonate rocks is very low and many these unsuitable reservoirs (which hold significant portion remaining...

We have previously used surface chemistry analysis techniques to optimize the functionalization of carbonate rocks with a silylated polyacrylamide-based relative permeability modifier (RPM). The RPM is expected selectively reduce water in hydrocarbon reservoir setting, resulting reduction amount produced while maintaining production oil/gas. This study will focus on using core flooding brine/crude oil under conditions (i.e., 1500 psi pore pressure and 60 °C temperature) understand impact...

In the drilling of horizontal wells, core task surface logging is to guide geosteering while by using collected data including electrical property, lithology, petrophysics, and oil/gas-bearing properties. Surface in have two key technologies: one stratigraphic correlation prediction technology before encountering zone interest, other geological interpretation after interest. Based on a systematic analysis difficult points aspects, combination with application examples, this paper deeply...