Enabling long-cycling aqueous sodium-ion batteries via Mn dissolution inhibition using sodium ferrocyanide electrolyte additive.

Aqueous sodium-ion batteries (AIBs) are promising candidates for large-scale energy storage due to their safe operational properties and low cost. However, AIBs have low specific energy (i.e.

Bi Doping-Enhanced Reversible-Phase Transition of α-MnO Raising the Cycle Capability of Aqueous Zn-Mn Batteries.

Rechargeable aqueous zinc-manganese oxide batteries have attracted extensive attention in energy-storage systems owing to their high safety and low cost but still suffer from the lack of advanced cathode materials with both high capacity and a long cycle life. Here, the bismuth-doped α-MnO was synthesized by a hydrothermal method. The preintercalation of Bi effectively enlarges the lattice spacing and boosts the electrochemical performance of Zn/MnO batteries.

Highly Reversible Zn Electrodeposition Enabled by an Artificial 3D Defect-Rich Conductive Scaffold.

Rechargeable Zn metal batteries are attracting intensive attention due to the high capacity and safety of metallic Zn. However, their developments are strongly restricted by the poor reversibility and low areal capacity of anodes, especially at high rates. To achieve homogeneous and rapid Zn deposition is a way to solve these issues intrinsically.

Graphene Oxide Wrapped CuVO Nanobelts as High-Capacity and Long-Life Cathode Materials of Aqueous Zinc-Ion Batteries.

Rechargeable aqueous zinc-ion batteries are considered as a promising alternative of lithium-ion batteries for stationary energy storage because of their economical and high safety quality. However, their widespread application is still impeded by the development of cathode materials with poor energy density and limited long-term stability. Herein, we report a high-performance CuVO cathode material for aqueous zinc-ion batteries and elucidate the zinc-storage mechanism.

Boosting the Cyclic Stability of Aqueous Zinc-Ion Battery Based on Al-Doped VO·12HO Cathode Materials.

Rechargeable aqueous zinc-ion batteries (ZIBs) are considered an alternative energy storage system to lithium-ion battery because of its low price and high safety. However, the development of zinc-ion battery is limited by positive materials, which usually show poor cycling life because of the strong electrostatic interaction between divalent Zn ions and crystal structure of materials. Developing a cathode material with a stable structure upon cycling is still a big challenge for researchers worldwide.

Simultaneous Suppression of the Dendrite Formation and Shuttle Effect in a Lithium-Sulfur Battery by Bilateral Solid Electrolyte Interface.

Although the reversible and inexpensive energy storage characteristics of the lithium-sulfur (Li-S) battery have made it a promising candidate for electrical energy storage, the dendrite growth (anode) and shuttle effect (cathode) hinder its practical application. Here, it is shown that new electrolytes for Li-S batteries promote the simultaneous formation of bilateral solid electrolyte interfaces on the sulfur-host cathode and lithium anode, thus effectively suppressing the shuttle effect and dendrite growth. These high-capacity Li-S batteries with new electrolytes exhibit a long-term cycling stability, ultrafast-charge/slow-discharge rates, super-low self-discharge performance, and a capacity retention of 94.

Self-Healing Lamellar Structure Boosts Highly Stable Zinc-Storage Property of Bilayered Vanadium Oxides.

Rechargeable aqueous zinc-ion batteries have been considered one of the promising alternative energy-storage systems to lithium ion-batteries owing to their low cost and high safety. However, there is lack of long-life positive materials, which severely restricts the development of zinc-ion batteries. The strong interactions present between the intercalated multivalent cations and host materials inevitably cause structural distortions and create large migration barriers for the diffusion of cations, resulting in poor cycling stability and limited rate performance.

Iso-Oriented NaTi(PO) Mesocrystals as Anode Material for High-Energy and Long-Durability Sodium-Ion Capacitor.

Sodium-ion capacitors (SIC) combine the merits of both high-energy batteries and high-power electrochemical capacitors as well as the low cost and high safety. However, they are also known to suffer from the severe deficiency of suitable electrode materials with high initial Coulombic efficiency (ICE) and kinetic balance between both electrodes. Herein, we report a facile solvothermal synthesis of NaTi(PO) nanocages constructed by iso-oriented tiny nanocrystals with a mesoporous architecture.

Amorphous ZnO Quantum Dot/Mesoporous Carbon Bubble Composites for a High-Performance Lithium-Ion Battery Anode.

Due to its high theoretical capacity (978 mA h g), natural abundance, environmental friendliness, and low cost, zinc oxide is regarded as one of the most promising anode materials for lithium-ion batteries (LIBs). A lot of research has been done in the past few years on this topic. However, hardly any research on amorphous ZnO for LIB anodes has been reported despite the fact that the amorphous type could have superior electrochemical performance due to its isotropic nature, abundant active sites, better buffer effect, and different electrochemical reaction details.

Ultrathin Zn2(OH)3VO3 Nanosheets: First Synthesis, Excellent Lithium-Storage Properties, and Investigation of Electrochemical Mechanism.

Nowadays, exploiting novel electrode materials is widely accepted as a key for meeting the growing demands of high-performance lithium ion batteries. Several transition-metal vanadates, which can in situ form an elastic buffer to adapt the volume expansion during lithium uptake/removal, have recently attracted much attention as anode materials, since they have high capacity and superior cycling stability. Herein, Zn2(OH)3VO3 nanostructures are successfully fabricated for the first time by a facile hydrothermal method and also first studied as lithium ion anode material.

Ultrathin Hexagonal 2D Co₂GeO₄ Nanosheets: Excellent Li-Storage Performance and ex Situ Investigation of Electrochemical Mechanism.

Two-dimensional (2D) nanostructures are a desirable configuration for lithium ion battery (LIB) electrodes due to their large open surface and short pathway for lithium ions. Therefore, exploring new anode materials with 2D structure could be a promising direction to develop high-performance LIBs. Herein, we synthesized a new type of 2D Ge-based double metal oxides for lithium storage.

Hollow Ball-in-Ball CoxFe3-xO4 Nanostructures: High-Performance Anode Materials for Lithium-Ion Battery.

The intrinsic electronic conductivity can be improved by doping efficiently. CoxFe3-xO4 nanostructures have been synthesized for the first time to improve the conductivity of lithium battery electrode. The solid solution CoxFe3--xO4 were characterized by X-ray diffraction pattern (XRD), Raman spectrum, scanning electron microscopy (SEM), transmission electron microscope (TEM), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV).

Free-Standing and Transparent Graphene Membrane of Polyhedron Box-Shaped Basic Building Units Directly Grown Using a NaCl Template for Flexible Transparent and Stretchable Solid-State Supercapacitors.

Transparency has never been integrated into freestanding flexible graphene paper (FF-GP), although FF-GP has been discussed extensively, because a thin transparent graphene sheet will fracture easily when the template or substrate is removed using traditional methods. Here, transparent FF-GP (FFT-GP) was developed using NaCl as the template and was applied in transparent and stretchable supercapacitors. The capacitance was improved by nearly 1000-fold compared with that of the laminated or wrinkled chemical vapor deposition graphene-film-based supercapacitors.

[The clinical application value of dual source CT quantification volume imaging to forecast lung cancer patients' postoperative pulmonary function changing: a prospective study].

Objective: To probe the clinical application and value of dual source CT quantification volume imaging to forecast lung cancer patients' postoperative pulmonary function changing.

Methods: Between June 2012 and June 2013, there were 233 patients (121 male patients and 112 female patients, with a mean age of (53 ± 16) years) who accepted the thoracoscope lobectomy or unilateral holo-lungs pneumonectomy accepted pulmonary function test before and after 3 months of the surgery. CT scan was conducted at both inspiration phase and expiration phase before the surgery and the lung volume of the single lobe, the pixel exponential distribution histogram, and the average lung density were measured after CT scan.

General scalable strategy toward heterogeneously doped hierarchical porous graphitic carbon bubbles for lithium-ion battery anodes.

Novel carbon nanostructures, e.g., carbon nanotubes (CNTs), graphene, hierarchical porous graphitic carbon (HPGC), and ordered mesoporous carbon (CMK-3), have been significantly forwarding the progress of energy storage and conversion.

Self-assembly of Co3V2O8 multilayered nanosheets: controllable synthesis, excellent Li-storage properties, and investigation of electrochemical mechanism.

Developing electrode materials with both high energy and power densities holds the key for satisfying the urgent demand of energy storage worldwide. Herein, we demonstrate the successful preparation of Co3V2O8 nanostructures that are constructed from self-assembly of ultrathin nanosheets via a simple hydrothermal method followed by annealing in air at 350 °C for 2 h. A "slipping-exfoliating-self reassembly" model based on the time-dependent experiments was proposed to elucidate the formation of the hierarchical nanosheets.

A strategy to synthesize hollow micro/nanospheres with tunable shell thickness.

A simple one-step direct templating method is developed to synthesize hollow carbon and sandwich-like ZnO/C/ZnO micro/nanospheres. The type and shell thickness of the final products can be controlled by simply adjusting the reaction temperature. The removal of the templates can also be easily controlled during the synthesis.