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Related Concept Videos

Ion Exchange01:17

Ion Exchange

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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...
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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Ionic Bonds

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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...
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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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Electrolysis03:00

Electrolysis

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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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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
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Superionic Bifunctional Polymer Electrolytes for Solid-State Energy Storage and Conversion.

Rui-Yang Wang1, Seungwon Jeong2, Hyeonseong Ham1

  • 1Department of Chemistry, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)
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Researchers developed a novel polymer electrolyte, poly(3-hydroxy-4-sulfonated styrene) (PS-3H4S), for advanced energy storage. This material achieves high ionic conductivity and mechanical strength, enabling applications in batteries and soft actuators.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Science

Background:

  • Solid-state polymer electrolytes are crucial for next-generation energy storage devices.
  • Achieving high ionic conductivity in these materials, especially at low temperatures, remains a significant challenge.
  • Developing electrolytes that balance ionic conductivity with mechanical stability is essential for practical applications.

Purpose of the Study:

  • To present a novel bifunctional polymer, poly(3-hydroxy-4-sulfonated styrene) (PS-3H4S), as a platform for innovative electrolyte technologies.
  • To investigate the mechanism of enhanced ion transport in PS-3H4S-based electrolytes.
  • To evaluate the performance of these electrolytes in energy storage devices.

Main Methods:

  • Synthesis and characterization of the bifunctional polymer PS-3H4S.
  • Incorporation of ionic liquids to form composite electrolytes.
  • Analysis of polymer structure, ion dynamics, and hydrogen bonding.
  • Electrochemical measurements of ionic conductivity and mechanical testing.
  • Device testing in soft actuators and lithium-metal batteries.

Main Results:

  • The PS-3H4S polymer forms "intra-monomer" hydrogen bonds, weakening ion-polymer interactions and promoting heterogeneity.
  • Composite electrolytes with ionic liquids exhibit interconnected ion channels, decoupling ion and polymer relaxation.
  • High ionic conductivity (10⁻³ S cm⁻¹) was achieved, even at cryogenic temperatures down to -35 °C.
  • The electrolytes demonstrated a high storage modulus (≈100 MPa) and successful application in soft actuators and lithium-metal batteries.

Conclusions:

  • The PS-3H4S/ionic liquid system offers a promising route to high-performance solid-state electrolytes.
  • The unique polymer structure facilitates efficient proton hopping and decoupling of ion dynamics.
  • These electrolytes show potential for advancing energy storage technologies, including batteries and actuators.