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Intermolecular Forces in Solutions02:28

Intermolecular Forces in Solutions

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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,...
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Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility02:34

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Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
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Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

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Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
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Intermolecular Forces03:13

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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...
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Ionic Strength: Effects on Chemical Equilibria01:19

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The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
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Intermolecular Forces and Physical Properties02:56

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Breaking Diffusion Limit in Ester-Flame-Proof Na-Ion Electrolytes Through Solvent Coordination Chemistry.

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Angewandte Chemie (International Ed. in English)
|October 24, 2025
PubMed
Summary

We developed a new descriptor-guided framework for designing safer, high-performance sodium-ion battery electrolytes. This approach overcomes traditional limitations, enabling flame-proof and fast-charging capabilities for advanced energy storage.

Keywords:
Descriptor‐guidedFast‐chargeFlame‐proof electrolytesSodium‐ion batteriesSolvent screening

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Traditional sodium-ion battery (SIB) electrolytes face limitations in performance and safety.
  • Current electrolyte design relies on inefficient trial-and-error methods without clear selection rules.

Purpose of the Study:

  • To establish a descriptor-guided framework for identifying intrinsically flame-proof, ester-based SIB electrolytes.
  • To overcome conventional diffusion limits and enhance battery performance.

Main Methods:

  • Developed a framework based on solvent oxidative stability and Na+-solvent coordination chemistry.
  • Screened fluorinated phosphate and cyclic carbonate candidates.
  • Synthesized and evaluated novel electrolyte properties including desolvation, oxidation resistance, and flame retardancy.

Main Results:

  • Successfully designed and synthesized intrinsically flame-proof electrolytes with fast-charging capabilities.
  • Optimized electrolytes demonstrated over 98% capacity retention for 350 cycles at 1.0 C in Na3V2(PO4)3 (NVP) cells.
  • Achieved nearly 100% Coulombic efficiency, outperforming benchmark carbonate systems.

Conclusions:

  • The descriptor-guided framework provides a rational pathway for developing high-rate, flame-proof SIB electrolytes.
  • This approach successfully breaks conventional diffusion limits and eliminates brute-force screening in electrolyte design.