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Related Concept Videos

Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis02:29

Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis

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Overview
Ethers can be prepared from organic compounds by various methods. Some of them are discussed below,
Preparation of Ethers by Alcohol Dehydration
In this method, in the presence of protic acids, alcohol dehydrates to produce alkenes and ethers under different conditions. For example, in the presence of sulphuric acid, dehydration of ethanol at 413 K yields ethoxyethane, whereas it yields ethene at 443 K.
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Crown Ethers02:36

Crown Ethers

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Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether molecules...
6.1K
Structure and Nomenclature of Ethers02:28

Structure and Nomenclature of Ethers

14.8K
Structure and Bonding
Ethers are organic compounds with an ether functional group which is characterized by an oxygen atom connected to two — identical or different — alkyl, aryl, or vinyl groups. The C–O–C linkage in dimethyl ether — the simplest ether — has an approximately tetrahedral bond angle of 110.3 degrees. The oxygen atom is sp3- hybridized, with the C–O distance being about 140 pm.
Classification of Ethers
Based on their attached substituent...
14.8K
Physical Properties of Ethers02:17

Physical Properties of Ethers

8.5K
Overview
An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
8.5K
Autoxidation of Ethers to Peroxides and Hydroperoxides02:23

Autoxidation of Ethers to Peroxides and Hydroperoxides

9.6K
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
9.6K
Ethers to Alkyl Halides: Acidic Cleavage02:18

Ethers to Alkyl Halides: Acidic Cleavage

7.1K
Ethers are generally unreactive and unsuitable for direct nucleophilic substitution reactions since the alkoxy groups are strong bases and, therefore, poor leaving groups. However, ethers readily undergo acidic-cleavage reactions. Ethers can be converted to alkyl halides when heated with strong acids such as HBr and HI in a sequence of two substitution reactions.
7.1K

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Updated: Feb 4, 2026

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
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High performance electrospun Li+-functionalized sulfonated poly(ether ether ketone)/PVA based nanocomposite gel

Nan Lu1, Xi Zhang2, Ruiqi Na1

  • 1College of Chemistry, Key Laboratory of High Performance Plastics, Ministry of Education, Jilin University, Changchun 130012, PR China.

Journal of Colloid and Interface Science
|September 30, 2018
PubMed
Summary

New nanocomposite gel polymer electrolytes (NGPEs) enhance electric double layer capacitors (EDLCs). These NGPEs offer improved ionic conductivity and stability for advanced energy storage systems.

Keywords:
Cross-linked PVA/LiClO(4)ElectrospinningNanocomposite gel polymer electrolytesSPEEK(Li)

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Science

Background:

  • Conventional gel electrolytes often face limitations in ionic conductivity and mechanical stability.
  • Developing advanced materials is crucial for improving the performance of energy storage devices like electric double layer capacitors (EDLCs).

Purpose of the Study:

  • To synthesize and characterize novel nanocomposite gel polymer electrolytes (NGPEs) for EDLC applications.
  • To investigate the impact of a Li+-functionalized SPEEK nanofiber membrane on electrolyte properties.
  • To evaluate the electrochemical performance and stability of EDLCs utilizing the developed NGPEs.

Main Methods:

  • Synthesis of NGPEs using a Li+-functionalized SPEEK nanofiber membrane, cross-linked PVA, and LiClO4.
  • Characterization of ionic conductivity and voltage stability window of the NGPEs.
  • Fabrication and testing of symmetric EDLCs using the NGPEs, including cyclic voltammetry and galvanostatic charge-discharge (GCD) tests.

Main Results:

  • The NGPEs exhibited a high ionic conductivity of 8.9 × 10^-3 S/cm at room temperature.
  • A wide voltage stability window (0-2.0 V) was achieved.
  • Fabricated EDLCs demonstrated a specific capacitance of 146.96 F/g, with an energy density of 18.26 Wh/kg.
  • Outstanding cycling stability was observed, with 98% capacitance retention after 3000 GCD cycles.

Conclusions:

  • The developed NGPEs show significant potential for use in electric double layer capacitors.
  • The unique structure of the SPEEK(Li) nanofiber membrane contributes to enhanced ionic conductivity and mechanical stability.
  • These findings suggest NGPEs are suitable for EDLCs and future energy storage technologies.