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Related Concept Videos

Ionic Bonds00:42

Ionic Bonds

118.8K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
118.8K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

41.9K
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. 
41.9K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

67.5K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
67.5K
Ion Exchange01:17

Ion Exchange

631
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
631
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

17.3K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
17.3K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

63.7K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
63.7K

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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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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

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Aqueous Binders Compatible with Ionic Liquid Electrolyte for High-Performance Aluminum-Ion Batteries.

Zhaohui Yang1, Meilin Guo1, Pengyu Meng1

  • 1School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|February 3, 2023
PubMed
Summary

Sodium alginate (Na-Alg) offers a low-cost, eco-friendly alternative binder for aluminum-ion batteries (AIBs). This aqueous binder improves electrode stability and performance by enhancing compatibility with ionic liquid electrolytes.

Keywords:
aluminum-ion batteryaqueous binderelectrochemical performanceenergy storagesodium alginate

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Storage

Background:

  • Aluminum-ion batteries (AIBs) face challenges due to binder incompatibility with acidic ionic liquid electrolytes.
  • Traditional binders often require toxic and expensive solvents like N-methyl pyrrolidone (NMP).

Purpose of the Study:

  • To develop a cost-effective and environmentally friendly binder for graphite positive electrodes in AIBs.
  • To evaluate the compatibility and performance of sodium alginate (Na-Alg) as an aqueous binder.

Main Methods:

  • Fabrication of graphite positive electrodes using Na-Alg as a binder.
  • Evaluation of binder compatibility with ionic liquid electrolytes.
  • Analysis of binder-graphite interactions before and after battery cycling.

Main Results:

  • Na-Alg demonstrates excellent compatibility with ionic liquid electrolytes.
  • Na-Alg ensures uniform distribution on graphite, facilitating charge transfer and ion diffusion.
  • Reduced electrode polarization and significantly improved cycling stability and rate capability were observed.

Conclusions:

  • Na-Alg is a promising aqueous binder for high-performance, sustainable AIBs.
  • This research offers insights into developing advanced binders for next-generation batteries.