Sodium is globally available, which makes a sodium-ion rechargeable battery preferable to lithium-ion for large-scale storage of electrical energy, provided host cathode Na can be found that provides the necessary capacity, voltage, and cycle life at prescribed charge/discharge rate. Low-cost hexacyanometallates are promising cathodes because their ease synthesis rigid open framework enables fast Na+ insertion extraction. Here we report an intriguing effect interstitial H2O on structure...

Highly ordered mesoporous crystalline MoO2 materials with bicontinuous Ia3d mesostructure were synthesized by using phosphomolybdic acid as a precursor and silica KIT-6 hard template in 10% H2 atmosphere via nanocasting strategy. The prepared material shows typical metallic conductivity low resistivity (∼0.01Ω cm at 300 K), which makes it different from all previously reported metal oxides materials. Primary test found that exhibits reversible electrochemical lithium storage capacity high...

Abstract LiCoO 2 , discovered as a lithium‐ion intercalation material in 1980 by Prof. John B. Goodenough, is still the dominant cathode for batteries (LIBs) portable electronics market due to its high compacted density, energy excellent cycle life and reliability. In order satisfy increasing demand of such smartphones laptops, upper cutoff voltage ‐based has been continuously raised achieving higher density. However, several detrimental issues including surface degradation, damages induced...

Mesoporous carbon with homogeneously dispersed multi-walled nanotubes (MWNTs) are synthesized via a one-step “brick and mortar” soft-templating approach. Nanocomposites exhibit reversible lithium storage capacity of 900 mA h g−1 good rate performance. Such homogeneous nanocomposites ideal candidates for electric vehicle applications where high power energy density primary requirements.

A TiNb₂O₇ material with a nanoporous structure was prepared by facile approach and can be used as an anode excellent rate cycling performance for long-life stationary lithium-ion batteries.

The synthesis of mesoporous Prussian blue analogues through a template-free methodology and the application these materials as high-performance cathode in sodium-ion batteries is presented. Crystalline mesostructures were produced synergistically coupled nanocrystal formation aggregation mechanism. As cathodes for batteries, all show reversible capacity 65 mA h g-1 at low current rate excellent cycle stability. reported method stands an environmentally friendly low-cost alternative to hard...

We have established a facile and generalizable "silica-assisted" synthesis for diverse carbon spheres—a category that covers mesoporous nanospheres, hollow yolk-shell nanospheres—by using phenolic resols as polymer precursor, silicate oligomers an inorganic hexadecyl trimethylammoniumchloride template. The particle sizes of the nanospheres are uniform easily controlled in wide range 180–850 nm by simply varying ethanol concentrations. All three types high surface areas large pore volumes...

Ultrafine MoO2 nanorods with a diameter of ∼5 nm were successfully synthesized by nanocasting method using mesoporous silica SBA-15 as hard template. This material demonstrates high reversible capacity, excellent cycling performance, and good rate capacity an anode electrode for Li ion batteries. The significant enhancement in the electrochemical storage performance ultrafine is attributed to nanorod structure small efficient one-dimensional electron transport pathways. Moreover, density...

A PLGA nanofiber membrane supported lung-on-a-chip microdevice was developed to model the alveolar microenvironment for anti-cancer drug testing.

α-Fe(2)O(3) nanoparticle-loaded carbon nanofiber composites were fabricated via electrospinning FeCl(3)·6H(2)O salt-polyacrylonitrile precursors in N,N-dimethylformamide solvent and the subsequent carbonization inert gas. Scanning electron microscopy, transmission energy dispersive X-ray spectroscopy, photoelectron diffraction, elemental analysis used to study morphology composition of α-Fe(2)O(3)-carbon composites. It was indicated that nanoparticles with an average size about 20 nm have a...

An integrated preparation of a low‐cost composite gel–polymer/glass–fiber electrolyte with poly(vinylidene fluoride‐ co ‐hexafluoropropylene) (PVDF‐HFP) reinforced by glass–fiber paper and modified polydopamine coating to tune the mechanical surface properties PVDF‐HFP is shown be applicable sodium‐ion battery. The polymer matrix exhibits excellent strength thermal stability up 200 °C. After saturating liquid electrolyte, wide electrochemical window high ionic conductivity obtained for...

Lithiated graphitic carbon nitride (C3N4) was fabricated by electrochemical and solid-state reactions. The addition of Li to C3N4 results in a reaction between the graphite-like C3N species C3N4. This irreversible leads formation Li-CH═NR Li-N═CR2 species, which are detrimental anode properties. Suitable nitrogen-doped structures for applications predicted need high concentrations pyridinic C–N–C terminal bonds low quaternary boost electronic conductivity reversibly cycle ions.

Ni-rich cathode materials LiNixCoyMn1–x–yO2 (x ≥ 0.6) have attracted much attention due to their high capacity and low cost. However, they usually suffer from rapid decay short cycle life surface/interface instability, accompanied by the Ni content. In this work, with Ni0.9Co0.05Mn0.05(OH)2 precursor serving as a coating target, Li-ion conductor Li2SiO3 layer was uniformly coated on material LiNi0.9Co0.05Mn0.05O2 precoating syn-lithiation method. The uniform not only improves diffusion...

The growth and proliferation of lithium (Li) dendrites during cell recharge are currently unavoidable, which seriously hinders the development application rechargeable Li metal batteries. Solid electrolytes with robust mechanical modulus regarded as a promising approach to overcome dendrite problems. However, their room-temperature ionic conductivities usually too low reach level required for normal battery operation. Here, class novel solid liquid-like (>1 mS cm(-1)) has been successfully...

Sodium metal is an ideal anode material for rechargeable batteries, owing to its high theoretical capacity (1166 mAh g-1 ), low cost, and earth-abundance. However, the dendritic growth upon Na plating, stemming from unstable solid electrolyte interphase (SEI) film, a major most notable problem. Here, sodium benzenedithiolate (PhS2 Na2 )-rich protection layer synthesized in situ on by facile method that effectively prevents dendrite carbonate electrolyte, leading stabilized electrodeposition...

Lithium-sulfur (Li-S) batteries are attractive candidates for transportation applications because of their high energy density (2600 W h kg(-1)). However, Li-S have failed to achieve commercial success, due the rapid capacity fading with cycling caused mainly by "shuttle" phenomenon. Here, we report a feasible approach mitigate this issue using porous aromatic framework (PAF) as hosting substrate in batteries. As cathode material, composite PAF sulfur exhibits and excellent stability both...

Abstract LiCoO 2 , which was first proposed as a cathode in 1980 by Prof. John B. Goodenough, is still one of the most popular commercial cathodes for lithium‐ion batteries. Tremendous efforts have been invested increasing capacity charging to high voltage. However, series issues, such structural instability and dramatic side reactions with electrolytes, can emerge cut‐off voltage above 4.5 V (vs Li/Li + ). Here, surface modification strategy multilayer structure provided, involving Zn‐rich...

Sodium metal anode (SMA) is one of the most favored choices for next-generation rechargeable battery technologies owing to its low cost and natural abundance. However, poor reversibility resulted from dendrite growth formation unstable solid electrolyte interphase has significantly hindered practical application SMAs. Herein, we report that a nucleation buffer layer comprising elaborately designed core-shell C@Sb nanoparticles (NPs) enables homogeneous electrochemical deposition sodium...

To increase the sulfur content/loading, trap soluble Li2Sx intermediates, and improve cycling stability of Li/S batteries, 3D-interlaced, nitrogen-doped, micro/mesoporous carbon-fiber free standing membranes are developed. Extendable multilayers' stacking carbon fibers not only allows a greater content/loading on cathode, but also helps to better mitigate diffusion polysulfide. As service our authors readers, this journal provides supporting information supplied by authors. Such materials...

Although various cathode materials have been explored to improve the energy density of lithium-ion batteries, LiCoO2 is still first choice for 3C consumer electronics due high tap and volumetric density. However, only 0.5 mol lithium ions can be extracted from avoid side reactions irreversible structure change, which typically occur at voltage (>4.2 V). To electrochemical performances material cut-off elevated temperature higher density, an in situ formed spinel interfacial coating layer...