Uncovering ZnS growth behavior and morphology control for high-performance aqueous Zn-S batteries.

Aqueous Zn-S batteries provide competitive energy density for large-scale energy storage systems. However, the cathode active material exhibits poor electrical conductivity especially at the discharged state of ZnS. Its morphology generated in cells thus directly determines the cathode electrochemical activity.

Zinc-dual-halide complexes suppressing polyhalide formation for rechargeable aqueous zinc-halogen batteries.

Aqueous zinc-halogen batteries suffer from poor coulombic efficiency and short cycle life owing to the formation and dissolution of polyhalides in electrolytes. Herein, we apply a zinc-dual-halide complex strategy to confine free halides and suppress polyhalide formation. The high stabilities of zinc-dual-halide complexes are identified to be essential for effective confinement.

Intravenous Administration of Hypertonic Glucose Solution to Prevent Dizziness in Patients Undergoing Gastrointestinal Endoscopy Under General Anesthesia: A Randomized Clinical Trial.

Background And Objective: Dizziness is a common complication of gastrointestinal endoscopy under general anesthesia. Dizziness is primarily caused by a lack of energy and blood volume following fasting and water deprivation. Hypertonic glucose solution (HGS) is an intravenous energy replenishment, that increases blood volume due to its hyperosmotic characteristics and can be directly absorbed from blood circulation.

Stabilization of VOPO·2HO voltage and capacity retention in aqueous zinc batteries with a hydrogen bond regulator.

The transformation of polyanion cathodes into oxides in aqueous Zn batteries results in voltage decay. Herein, we uncover a polyanion dissolution and oxide re-electrodeposition process for this transformation. Accordingly, the dissolution is inhibited by reducing the water activity in the electrolyte with the hydrogen bond regulator of glucose (Glu).

The back-deposition of dissolved Mn to MnO cathodes for stable cycling in aqueous zinc batteries.

The Mn dissolution of MnO cathode materials causes rapid capacity decay in aqueous zinc batteries. We herein show that the dissolved Mn can be deposited back to the cathode with the aid of a suitable conductive agent. The active material is thus retained for energy storage, and this MnO/Mn redox process also provides capacity.

Enabling Reversible MnO/Mn Transformation by Al Addition for Aqueous Zn-MnO Hybrid Batteries.

Aqueous rechargeable Zn-manganese dioxide (Zn-MnO) hybrid batteries based on dissolution-deposition mechanisms exhibit ultrahigh capacities and energy densities due to the two-electron transformation between MnO/Mn. However, the reported Zn-MnO hybrid batteries usually use strongly acidic and/or alkaline electrolytes, which may lead to environmental hazards and corrosion issues of the Zn anodes. Herein, we propose a new Zn-MnO hybrid battery by adding Al into the sulfate-based electrolyte.

A high capacity small molecule quinone cathode for rechargeable aqueous zinc-organic batteries.

Rechargeable aqueous zinc-organic batteries are promising energy storage systems with low-cost aqueous electrolyte and zinc metal anode. The electrochemical properties can be systematically adjusted with molecular design on organic cathode materials. Herein, we use a symmetric small molecule quinone cathode, tetraamino-p-benzoquinone (TABQ), with desirable functional groups to protonate and accomplish dominated proton insertion from weakly acidic zinc electrolyte.

The energy storage behavior of a phosphate-based cathode material in rechargeable zinc batteries.

The energy storage behavior of the Li3V2(PO4)3 cathode in zinc batteries is evaluated. The dissolution or decomposition into vanadium oxide in aqueous electrolytes is revealed. Using the optimal combination of water and acetonitrile solvents in electrolyte, those processes are effectively prevented without sacrificing the Zn2+ de/insertion kinetics.

The Development of Vanadyl Phosphate Cathode Materials for Energy Storage Systems: A Review.

Various cathode materials have been proposed for high-performance rechargeable batteries. Vanadyl phosphate is an important member of the polyanion cathode family. VOPO has seven known crystal polymorphs with tunneled or layered frameworks, which allow facile cation (de)intercalations.

A Zn(ClO) Electrolyte Enabling Long-Life Zinc Metal Electrodes for Rechargeable Aqueous Zinc Batteries.

The degradation or dendrite formation of zinc metal electrodes has shown to limit the cycle life of rechargeable aqueous zinc batteries, and a few anode protection methods are proposed. We herein demonstrate that, except for external protections, a simple design of an electrolyte can effectively promote stable and facile Zn stripping/plating from/on zinc electrodes. By using Zn(ClO) in the aqueous electrolyte, reversible Zn stripping/plating is achieved for over 3000 h at 1 mA cm current density and 1 mA h cm capacity, superior to the conventional ZnSO electrolyte.

Inhibiting VOPO ⋅x H O Decomposition and Dissolution in Rechargeable Aqueous Zinc Batteries to Promote Voltage and Capacity Stabilities.

VOPO ⋅x H O has been proposed as a cathode for rechargeable aqueous zinc batteries. However, it undergoes significant voltage decay in conventional Zn(OTf) electrolyte. Investigations show the decomposition of VOPO ⋅x H O into VO in the electrolyte and voltage drops after losing the inductive effect from polyanions.

A Long-Cycle-Life Self-Doped Polyaniline Cathode for Rechargeable Aqueous Zinc Batteries.

Rechargeable aqueous zinc batteries are promising energy-storage systems for grid applications. Highly conductive polyaniline (PANI) is a potential cathode, but it tends to deactivate in electrolytes with low acidity (i.e.

Adsorption kinetic and thermodynamic studies of phosphate onto tantalum hydroxide.

Tantalum hydroxide exhibits the ability for the removal of phosphate from aqueous solution. The kinetic study, adsorption isotherm, thermodynamic study, desorption, and foreign anions effect were examined in batch experiments. The kinetic process was very well described by a pseudo-second-order rate model.

[Study on the nonlinear Raman lidar monitoring the CO2 gas].

It is a new skill to use SRS rays as emitting waves for the lidar monitoring CO2 gas, and the nonlinear Raman lidar based on the SRS process was devised. The third harmonic Nd: YAG laser wave (354.7 nm) was injected into the Raman cells filled with higher pressure gases, CO2 and N2.