Improving the Performance of the Layered Nickel Manganese Oxide Cathode of Sodium-Ion Batteries by Direct Coating with Sodium Niobium Oxide.

This research highlights the efficacy of NaNbO as a coating for P2-NaNiMnO cathodes in sodium-ion batteries. The coating enhances the kinetic behavior and cyclability of the electrochemical cells, as shown by electrochemical measurements. XRD analysis indicates that Nb does not incorporate into the cathode structure, implying a physical interaction between the coating and the cathode material.

Polyaniline-Coated NaV(PO)F Cathode Enables Fast Sodium Ion Diffusion and Structural Stability in Rechargeable Batteries.

NaV(PO)F (NVPF), a typical sodium superionic conductor (NASICON) type structure, has attracted much interest as a potential positive electrode in sodium-ion battery. However, the inherently poor electronic conductivity of phosphates compromises the electrochemical properties of this material. Here, we develop a general strategy to improve the electrochemical performance by preparing a new composite material "polyaniline (PANI)@NVPF" using a Pickering emulsion method.

New insights into tunnel-type NaMnOF with high performance and excellent cycling stability: the impact of F-doping.

Developing sustainable batteries based on abundant elements such as sodium and manganese is very attractive. Thus, sodium-manganese oxides can be employed as electrodes for sodium-ion batteries. Herein, an NaMnOF electrode material is investigated and optimized.

Review and New Perspectives on Non-Layered Manganese Compounds as Electrode Material for Sodium-Ion Batteries.

After more than 30 years of delay compared to lithium-ion batteries, sodium analogs are now emerging in the market. This is a result of the concerns regarding sustainability and production costs of the former, as well as issues related to safety and toxicity. Electrode materials for the new sodium-ion batteries may contain available and sustainable elements such as sodium itself, as well as iron or manganese, while eliminating the common cobalt cathode compounds and copper anode current collectors for lithium-ion batteries.

The Magnesium Insertion Effects into P2-Type Na Ni Mn O.

A Mg-cell with P2-Na Ni Mn O layered oxide cathode provides novel reaction mechanism not observed in Na-cells. The sodium/vacancy ordering and Jahn-Teller effects are suppressed with the insertion of magnesium ion. The Mg-cell exhibits different features when operating between 4.

New perspectives on the multianion approach to adapt electrode materials for lithium and post-lithium batteries.

Developing new and sustainable batteries is essential for modern society. Both cationic doping ( transition metals) and anionic doping (F, O, S, PO, etc.) can be employed to improve the electrochemical behaviour of electrode materials.

Olivine-Type MgMn Zn SiO Cathode for Mg-Batteries: Experimental Studies and First Principles Calculations.

Magnesium driven reaction in olivine-type MgMn Zn SiO structure is subject of study by experimental tests and density functional theory (DFT) calculations. The partial replacement of Mn in Oh sites by other divalent metal such as Zn to get MgMn Zn SiO cathode is successfully developed by a simple sol-gel method. Its comparison with the well-known MgMnSiO olivine-type structure with (Mg) (Mn) SiO cations distribution serves as the basis of this study to understand the structure, and the magnesium extraction/insertion properties of novel olivine-type (Mg) (Mn Zn ) SiO composition.

Advancing towards a Practical Magnesium Ion Battery.

A post-lithium battery era is envisaged, and it is urgent to find new and sustainable systems for energy storage. Multivalent metals, such as magnesium, are very promising to replace lithium, but the low mobility of magnesium ion and the lack of suitable electrolytes are serious concerns. This review mainly discusses the advantages and shortcomings of the new rechargeable magnesium batteries, the future directions and the possibility of using solid electrolytes.

Magnesium Deintercalation From the Spinel-Type MgMn Fe O (0.4≤y≤2.0) by Acid-Treatment and Electrochemistry.

Rechargeable magnesium batteries attract lots of attention because of their high safety and low cost compared to lithium batteries, and it is needed to develop more efficient electrode materials. Although MgMn O is a promising material for the positive electrode in Mg rechargeable batteries, it usually exhibits poor cyclability. To improve the electrochemical behavior, we have prepared nanoparticles of MgMn Fe O .

Testing the reversible insertion of magnesium in a cation-deficient manganese oxy-spinel through a concentration cell.

Magnesium-ion batteries could be competitive with lithium-ion batteries, but the reversible intercalation of magnesium in the framework of the host material needs to be verified. A concentration cell was built by using electrodes with different concentrations of magnesium ions in the cubic spinel MgMnO. For this purpose, firstly cations were partially extracted from MgMnO by acid-treatment.

Increasing Energy Density with Capacity Preservation by Aluminum Substitution in Sodium Vanadium Phosphate.

Highly Al-substituted C-coated NaVAl(PO) compounds with a sodium superionic conductor structure are synthesized by a single and easily scalable sol-gel route. The effect of the experimental conditions is examined. Their structural, chemical, and morphological features are described.

Use of XRD and SEM/EDX to predict age and sex from fire-affected dental remains.

In fire scenarios, the application and accuracy of traditional odontological methods are often limited. Crystalline studies and elemental profiling have been evaluated for their applicability in determining biological profiles (age and sex) from human dentition, particularly fire- and heat-affected dental remains. Thirty-seven teeth were paired according to tooth type and donor age/sex for the analysis of crown and root surfaces pre- and post-incineration using X-ray diffraction (XRD) and scanning electron microscopy (SEM/EDX).

On the Mechanism of Magnesium Storage in Micro- and Nano-Particulate Tin Battery Electrodes.

This study reports on the electrochemical alloying-dealloying properties of Mg₂Sn intermetallic compounds. Sn Mössbauer spectra of β-Sn powder, thermally alloyed cubic-Mg₂Sn, and an intermediate MgSn nominal composition are used as references. The discharge of a Mg/micro-Sn half-cell led to significant changes in the spectra line shape, which is explained by a multiphase mechanism involving the coexistence of c-Mg₂Sn, distorted MgSn, and Mg-doped β-Sn.

Electrochemical in battery polymerization of poly(alkylenedioxythiophene) over lithium iron phosphate for high-performance cathodes.

A molecular wiring concept was induced in LiFePO4 cathodes by in battery polymerization methods. This was performed by the addition of alkylthiophene monomers over the LiFePO4-based cathode during the first charging step in lithium test cells. The driving force for the in battery polymerization of the monomers was supplied by the oxidizing current and by the physical contact of monomers with delithiated Li1-xFePO4 formed during the charging of the battery.

Lithium storage mechanisms and effect of partial cobalt substitution in manganese carbonate electrodes.

A promising group of inorganic salts recently emerged for the negative electrode of advanced lithium-ion batteries. Manganese carbonate combines low weight and significant lithium storage properties. Electron paramagnetic resonance (EPR) and magnetic measurements are used to study the environment of manganese ions during cycling in lithium test cells.

Synthesis and electrochemical reaction with lithium of mesoporous iron oxalate nanoribbons.

Mesoporous FeC 2O 4 was prepared by dehydration of bulk monoclinic- and micellar orthorhombic FeC 2O 4.2H 2O precursors at 200 degrees C. The micellar material shows nanoribbon shaped particles, which are preserved after dehydration.