Ultralong hierarchical vanadium oxide nanowires with diameter of 100-200 nm and length up to several millimeters were synthesized using the low-cost starting materials by electrospinning combined annealing. The constructed from attached nanorods around 50 100 nm. initial 50th discharge capacities ultralong nanowire cathodes are 390 201 mAh/g when lithium ion battery cycled between 1.75 4.0 V. When was 2.0 V, 275 187 mAh/g. Compared self-aggregated short hydrothermal method, exhibit much...

Abstract Nanowires and nanotubes have been the focus of considerable efforts in energy storage solar conversion because their unique properties. However, owing to limitations synthetic methods, most inorganic nanotubes, especially for multi-element oxides binary-metal oxides, rarely fabricated. Here we design a gradient electrospinning controlled pyrolysis method synthesize various controllable 1D nanostructures, including mesoporous pea-like continuous nanowires. The key point this is...

This review summarizes the influences of water molecules during energy storage process from perspectives electrolyte, Zn anode, and cathode materials, including basic theory, modification methods, practical applications.

Transition metal oxides have attracted much interest for their high energy density in lithium batteries. However, the fast capacity fading and low power still limit practical implementation. In order to overcome these challenges, one-dimensional yolk–shell nanorods been successfully constructed using manganese oxide as an example through a facile two-step sol–gel coating method. Dopamine tetraethoxysilane are used precursors obtain uniform polymer silica layer followed by converting into...

Lithium-air batteries have captured worldwide attention due to their highest energy density among the chemical batteries. To provide continuous oxygen channels, here, we synthesized hierarchical mesoporous perovskite La(0.5)Sr(0.5)CoO(2.91) (LSCO) nanowires. We tested intrinsic reduction reaction (ORR) and evolution (OER) activity in both aqueous electrolytes nonaqueous via rotating disk electrode (RDE) measurements demonstrated that LSCO nanowires are high-performance catalysts for ORR with...

Developing electrode materials with both high energy and power densities holds the key for satisfying urgent demand of storage worldwide. In order to realize fast efficient transport ions/electrons stable structure during charge/discharge process, hierarchical porous Fe3O4/graphene nanowires supported by amorphous vanadium oxide matrixes have been rationally synthesized through a facile phase separation process. The is directly in situ constructed from FeVO4·1.1H2O@graphene along...

Development of three-dimensional nanostructures with high surface area and excellent structural stability is an important approach for realizing high-rate long-life battery electrodes. Here, we report VO2 hollow microspheres showing empty spherical core radially protruding nanowires, synthesized through a facile controllable ion-modulating approach. In addition, by controlling the self-assembly negatively charged C12H25SO4(-) micelles positively VO(2+) ions, six-armed microspindles random...

Abstract With the increasing energy crisis and environmental pollution, rechargeable aqueous Zn‐based batteries (AZBs) are receiving unprecedented attention due to their list of merits, such as low cost, high safety, nontoxicity. However, limited voltage window, Zn dendrites, relatively specific capacity still great challenges. In this work, a new reaction mechanism reversible Mn 2+ ion oxidation deposition is introduced AZBs. The assembled /Zn hybrid battery (Mn HB) based on storage...

Zinc-ion batteries (ZIB) present great potential in energy storage due to low cost and high safety. However, the poor stability, dendrite growth, narrow electrochemical window limit their practical application. Herein, we develop a new eutectic electrolyte consisting of ethylene glycol (EG) ZnCl2 for dendrite-free long-lifespan ZIBs. The EG molecules participate Zn2+ solvation via coordination hydrogen-bond interactions. Optimizing /EG molar ratio (1 : 4) can strengthen intermolecular...

Uneven distribution of electric fields at the electrolyte-anode interface and associated Zn dendrite growth is one most critical barriers that limit life span aqueous zinc-ion batteries. Herein, new-type Zn-A-O (A = Si, Ti) layers with thin uniform thickness, porosity, hydrophilicity properties are developed to realize homogeneous smooth plating. For ZnSiO3 nanosheet arrays on foil (Zn@ZSO), their formation follows an "etching-nucleation-growth" mechanism confirmed by a well-designed...

The corrosion, parasitic reactions, and aggravated dendrite growth severely restrict development of aqueous Zn metal batteries. Here, we report a novel strategy to break the hydrogen bond network between water molecules construct Zn(TFSI)2 -sulfolane-H2 O deep eutectic solvents. This cuts off transfer protons/hydroxides inhibits activity H2 O, as reflected in much lower freezing point (<-80 °C), significantly larger electrochemical stable window (>3 V), suppressed evaporative from...

Abstract Recently, potassium‐ion batteries (PIBs) have emerged as a new energy storage system, offering complementary solution to lithium‐ion due their cost‐effectiveness and significantly high theoretical density, making them suitable for large‐scale grid applications. The critical challenge PIBs face is the scarcity of appropriate high‐capacity cathode materials. Among various contenders, Prussian blue analogs (PBAs) stand out. appeal PBAs arises from simple synthesis, economic viability,...

Graphene scrolls have been widely investigated for applications in electronics, sensors, energy storage, etc. However, graphene with tens of micrometers length and other materials their cavities not obtained. Here nanowire templated semihollow bicontinuous scroll architecture is designed constructed through "oriented assembly" "self-scroll" strategy. These obtained can achieve over 30 μm interior between the scroll. It demonstrated experiments molecular dynamic simulations that structure...

Intercalation of ions in electrode materials has been explored to improve the rate capability lithium batteries and supercapacitors, due enhanced diffusion Li+ or electrolyte cations. Here, we describe a synergistic effect between crystal structure intercalated ion by experimental characterization ab initio calculations, based on more than 20 nanomaterials: five typical cathode together with their alkali metal intercalation compounds A–M–O (A = Li, Na, K, Rb; M V, Mo, Co, Mn, Fe–P). Our...

Topotactically synthesized hierarchical zigzag Na_1.25V₃O₈ nanowires with an optimized morphology and a crystal structure exhibit excellent performances as Na-ion battery cathodes.

We report the single nanowire electrode devices designed as a unique platform for in situ probing intrinsic reason capacity fading Li ion based energy storage devices. In this device, vanadium oxide or Si/a-Si core/shell was used working electrode, and electrical transport of recorded to detect evolution during charging discharging. Along with lithium intercalation by shallow discharge, conductance decreased over 2 orders. The change can be restored previous scale upon deintercalation...

We report the electrical transport and H(2)S sensing properties of single beta-AgVO(3) nanowire device. nanowires were successfully prepared by ultrasonic treatment followed hydrothermal reaction using V(2)O(5) sol. The individual exhibits a "threshold switching" phenomenon. High bias (i.e., 6 V for Au contacts) is required to initially switch device from nonconductive conductive, it may be related formation nanoscale metallic Ag when enough voltage applied between two electrodes. This novel...

Development of pseudocapacitor electrode materials with high comprehensive electrochemical performance, such as capacitance, superior reversibility, excellent stability, and good rate capability at the mass loading level, still is a tremendous challenge. To our knowledge, few works could successfully achieve above performance simultaneously. Here we design synthesize one interwoven three-dimensional (3D) architecture cobalt oxide nanobrush-graphene@Ni(x)Co(2x)(OH)(6x) (CNG@NCH) performance:...

The novel 3D carbon framework confined Sb nanoparticle anode exhibits both high capacity and cycling stability.

The hybrid magnesium-lithium-ion batteries (MLIBs) combining the dendrite-free deposition of Mg anode and fast Li intercalation cathode are better alternatives to Li-ion (LIBs) in large-scale power storage systems. In this article, we reported MLIBs assembled with VO2 cathode, anode, Mg-Li dual-salt electrolyte. Satisfactorily, delivered a stable plateau at about 1.75 V, high specific discharge capacity 244.4 mA h g-1. To best our knowledge, displays highest energy density 427 Wh kg-1 among...

A 1.55 nm-interlayer spacing-expanded polyaniline-intercalated vanadium oxide, as a new electrode material for NH4+-ion batteries, exhibits the highest ever reported capacity of ∼307 mA h g-1 at current density 0.5 g-1. In situ FT-IR and XPS studies confirm reversible NH4+ storage is accompanied by H bond formation/breaking within functional group -VO···H.

Abstract In‐plane microbatteries (MBs) with features of facile integration, mass customization, and especially superior electrochemical performance are urgently required for self‐powered microelectronic devices. In this work, a manufacturing process is employed to fabricate Zn–MnO 2 MB 3D macroporous microelectrode. Benefiting from the high electron/ion transport path microelectrode mass‐loading poly(3,4‐ethylenedioxythiophene)‐manganese dioxide (PEDOT‐MnO ) film, achieves an ultrahigh...