Rechargeable lithium-sulfur (Li-S) batteries are receiving ever-increasing attention due to their high theoretical energy density and inexpensive raw sulfur materials. However, rapid capacity fade has been one of the key barriers for further improvement. It is well accepted that major degradation mechanisms S-cathodes include low electrical conductivity S sulfides, precipitation nonconductive Li2S2 Li2S, poly-shuttle effects. To determine these factors, a comprehensive study cathodes with...

Abstract Designing stable and efficient electrocatalysts for both oxygen reduction evolution reactions (ORR/OER) at low‐cost is challenging. Here, a carbon‐based bifunctional catalyst of magnetic catalytic nanocages that can direct enhance the activity by simply applying moderate (350 mT) field reported. The catalysts, with high porosity 90% conductivity 905 S m −1 , are created in situ doping metallic cobalt nanodots (≈10 nm) into macroporous carbon nanofibers facile electrospinning method....

Conductive porous carbon nanofibers are promising for environmental, energy, and catalysis applications. However, increasing their porosity conductivity simultaneously remains challenging. Here we report chemical crosslinking electrospinning, a macro-micro dual-phase separation method, to synthesize continuous with ultrahigh of >80% outstanding 980 S cm-1. With boric acid as the agent, poly(tetrafluoroethylene) poly(vinyl alcohol) crosslinked together form water-sol webs, which then...

This review systematically summarized Li-rich layered oxides and states the strategies to enhance such materials when used in Li-ion batteries.

Abstract Fiber materials are highly desirable for wearable electronics that expected to be flexible and stretchable. Compared with rigid planar electronic devices, fiber-based provide significant advantages in terms of flexibility, stretchability breathability, they considered as the pioneers new generation soft wearables. The convergence textile science, engineering nanotechnology has made it feasible build functions on fibers maintain them during wear. Over last few years, fiber-shaped...

Abstract BaTiO 3 crystals are attractive materials due to their high dielectric properties, but they brittle and inelastic ceramics, which limits broader applications in emerging fields, such as flexible electronics. A scalable strategy for the fabrication of ultra‐flexible crystalline nanofiber (NF) films by a sol–gel electrospinning method, followed brief calcination, is reported. It facilitates formation perovskite with intricate grain boundaries at low temperatures growing them within...

Achieving high selectivity and conversion efficiency simultaneously is a challenge for visible-light-driven photocatalytic CO2 reduction into CH4 . Here, facile nanofiber synthesis method new defect control strategy at room-temperature are reported the fabrication of flexible mesoporous black Nb2 O5 catalysts that contain abundant oxygen-vacancies unsaturated Nb dual-sites, which efficient towards production The oxygen-vacancy decreases bandgap width from 3.01-2.25 eV, broadens...

Self-standing photocatalytic membranes constructed from TiO2 nanofibers hold great promise in environmental remediation; however, challenges still remained for the poor mechanical properties of polycrystalline nanofibers. Herein, soft Zr-doped (TZ) nanofibrous with robust and enhanced activity were fabricated via electrospinning technique. The Zr4+ incorporation could effectively inhibit grain growth reduce surface defects breaking point nanofiber. as-prepared TZ composed well-interconnected...

Nanomaterials mimicking the nano-features of bones and offering unique smart functions are promising for better bone fracture repair. This review provides an overview current state-of-the-art research in developing using nanomaterials begins with a brief introduction repair processes, then discusses importance vascularization, role growth factors repair, failure Next, applications focus on recent breakthroughs such as leading to precise immobilization at molecular level, promoting...

Layered Li(Ni1–x–yMnxCoy)O2 (NMC) oxides are promising cathode materials capable of addressing some the challenges associated with next-generation energy storage devices. In particular, improved densities, longer cycle-life, and safety characteristics respect to current technologies needed. However, sufficient knowledge on atomic-scale processes governing these metrics in working cells is still lacking. Herein, density functional theory (DFT) employed predict stability several low-index...

Li-metal is the optimal choice as an anode due to its highest energy density. However, Li-anodes suffer safety problems from dendritic Li-growth and continuous corrosion by liquid electrolytes. Here, effective strategy of using ultrathin conformal mixed ionic electronic ceramic conductor (MIEC) proposed stabilize Li-anodes. An Li0.35 La0.52 [V]0.13 TiO3 (LLTO) film with superior conductivity first obtained sintering single-crystal LLTO nanoparticles, which have controlled surface facets...

Recently, various titanium dioxide (TiO2 ) nanostructures have received increasing attention in the fields of energy conversion and storage owing to their electrochemical properties. However, these particulate nanomaterials exclusively exist powder form, which may cause health risks environmental hazards. Herein we report a novel, highly elastic bulk form TiO2 for safe use easy recycling. Specifically, nanofibrous aerogels (NAs) consisting resiliently bonded, flexible nanofibers are...

Mass production of ordered and porous three-dimensional (3D) electrodes is a crucial prerequisite for practical energy storage devices. MXenes have drawn considerable attention as pseudocapacitive materials outstanding electric conductivity surface redox reactions; however, they face challenges achieving 3D architectures especially at high mass loadings. Herein we propose reduced-repulsion freeze-casting assembly concept via interlayer interaction engineering constructing Ti3C2Tx films,...

The separation and purification of chemical molecules from organic media under harsh environments are vital importance in the fields water treatment, biomedical engineering, recycling. Herein, we report preparation a flexible SiO2/SnO2 nanofibrous membrane (SiO2/SnO2 NFM) with high surface area hierarchical porous structure by selecting poly(vinyl butyral) as pore-forming agent embedding crystalline phase into amorphous matrix without using surfactant sacrificial template. Benefiting uniform...

Oxide crystal ceramics are commonly hard and brittle, when they bent typically fracture. Such mechanical response limits the use of these materials in emerging fields like wearable electronics. Here, a polymer-induced assembly strategy is reported to construct orderly assembled TiO2 crystals into continuous nanofibers that stretchable, bendable, even knottable. Ball-milling spinning sol curved-drafting electrospun significantly improve molecular structural order reduce pore defects precursor...

The development of efficient and stable catalysts for the oxygen reduction reaction (ORR) at low cost is crucial realizing large-scale application metal–air batteries. Herein, we report an ORR catalyst bimetallic copper cobalt fluoride heterojunctions, which are uniformly dispersed in nitrogen–fluorine–oxygen triply doped porous carbon nanofibers (PCNFs) that contain hierarchical macro-meso-micro pores. composite materials fabricated with a facile green method electrospinning water as...

Flexible oxide ceramic films offer prospects for revolutionizing diverse fields such as energy and electronics, but their fabrication methods are typically elaborate cannot be expanded. Here, we report a scalable strategy to fabricate flexible robust SiO2 nanofiber with controllable morphology using sol-gel electrospinning method followed by low-temperature calcination. When applied composite polymer electrolytes (CPEs) solid-state batteries filling polyethylene into porous films, nanofibers...

Lithium (Li) metal batteries (LMBs) offer great opportunity for developing high-energy density energy-storage-systems, but the anodes suffer a severe problem of dendrite growth that hinders practical applications LMBs. Here, we report soft BaTiO3 ceramic nanofiber film with excellent ferroelectricity and piezoelectricity enables one to transverse dense deposition Li metal. During plating, strong reduces Li-ion concentration gradient near anode thus facilitating their uniform deposition. Once...

Abstract Solid electrolytes are being considered as an effective solution to replace liquid ones for building safer batteries, but they suffer either low ionic conductivity or large contact ohmic impedance. Here, a highly conductive and thermomechanically stable quasi‐solid (QSE) by self‐polymerization of commercially available (1,3‐dioxolane (DOL), 1,2‐dimethoxyethane (DME), lithium trifluoromethane sulfonimide (LiTFSI) LiPF 6 ) at room temperature in porous polyimide nanofiber film...