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Related Concept Videos

Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
Intermolecular Forces in Solutions02:28

Intermolecular Forces in Solutions

The formation of a solution is an example of a spontaneous process, a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Such a solution is called an ideal solution. A mixture of ideal gases (or gases such as helium and argon,...
Solvating Effects02:12

Solvating Effects

An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
Theory of Strong Electrolytes01:23

Theory of Strong Electrolytes

The interionic forces of the strong electrolytes depend on the solvent's dielectric constant, which is the ability of a solvent to store electrical energy, based on its polarizability. and the solution's concentration. In high-dielectric solvents and in dilute solutions, weak electrostatic forces keep ions apart. However, in low-dielectric solvents or concentrated solutions, stronger interionic forces may cause ions to pair up as ionic doublets despite being fully ionized. The theory of strong...

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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Intermolecular interactions optimization in weakly solvating ether solvents for wide-temperature Na metal batteries.

Mengjie He1, Yunsen Liu1, Zhiling Wang1

  • 1College of Chemistry, Zhengzhou University, Zhengzhou, PR China.

Nature Communications
|June 7, 2026
PubMed
Summary

Researchers developed new sodium metal batteries that perform reliably in extreme temperatures (-40 to 70°C). This breakthrough enhances battery safety and stability for demanding applications by modifying solvent properties.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Wide-temperature-range batteries are crucial for extreme environments and exploration.
  • Sodium (Na) metal batteries offer advantages in low-temperature desolvation due to weak ion-solvent interactions.
  • Conventional low-volatility solvents pose safety risks at high temperatures.

Purpose of the Study:

  • To design novel weakly solvating solvents with enhanced intermolecular interactions for improved thermal stability.
  • To develop stable and high-performance sodium metal batteries for wide-temperature applications.
  • To investigate the role of solvent intermolecular interactions in low-temperature desolvation.

Main Methods:

  • Redesigning molecular structures of ether-based solvents to increase boiling points.
  • Synthesizing and characterizing modified solvents.
  • Electrochemical testing of sodium metal batteries using the new electrolytes across a wide temperature range.
  • Kinetic studies to analyze desolvation barriers.

Main Results:

  • Modified solvents exhibited increased boiling points while retaining weak solvation properties.
  • Sodium metal batteries demonstrated stable performance at 0.5 mA cm⁻² from -40 to 70°C.
  • Kinetic analysis revealed the significant impact of solvent intermolecular interactions on low-temperature desolvation.

Conclusions:

  • Optimizing intermolecular interactions in weakly solvating solvents is a viable strategy for wide-temperature sodium metal batteries.
  • The developed electrolytes enhance electrochemical reversibility and stability across diverse thermal conditions.
  • This research provides a promising pathway for next-generation energy storage solutions.