Themed collection Sodium-ion batteries – Topic Highlight

In recent years, rechargeable sodium–air batteries have attracted extensive attention and developed rapidly for electrochemical energy storage applications due to low costs, abundance of precursor resources, and high energy density.

This review provides a comparative study of contemporary MXene-based hybrid electrode materials in different alkali ion batteries.

We present an easily scalable approach to developing a nonwoven-supported PVDF-HFP polymer-based quasi-solid-state flexible non-flammable electrolyte, with a conductivity of 1.16 × 10⁻⁴ S cm⁻¹ at RT with a transfer number of 0.68.

The respective impact of the electrolyte and solvent, during anodic dissolution or passivation of aluminum was investigated in electrolyte solutions developed for sodium-ion batteries.

The hard carbon irreversible capacity loss in Na-ion cells can be reduced by decreasing the total surface area and the active surface area (defects).

Most “solvent-in-salt” (SIS) electrolytes are based on heavily fluorinated anions. Here we create fluorine-free SIS electrolytes with many promising basic characteristics for future sodium battery application.

Operando electrochemical strain generations in NaCrO₂ cathode electrode during cycling are monitored using a digital image correlation.

The discovery of quinone-based compounds that are commercially accessible and can function as cathode materials in sodium ion batteries.

We report an environmentally benign, and additive-free red P/Ti₃C₂T_x MXene nanocomposites as high-performance anodes for alkali-metal–ion batteries (MIBs where M = Li⁺, Na⁺, K⁺).

Highly-concentrated aqueous NaClO₄ electrolyte enables the high working voltage and superior cyclability of NaIn[Fe(CN)₆]. Furthermore, a guideline for tuning the working potential of Prussian Blue Analogs is demonstrated.

A wet chemical dispersion followed by annealing synthesis strategy enables the development of a low-cost metal oxide-based composite anode material.