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Related Concept Videos

Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Ionic Bonding and Electron Transfer02:48

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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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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 Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

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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.
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Bimetallic Anionic Organic Frameworks with Solid-State Cation Conduction for Charge Storage Applications.

Yan Zhang1,2, Jiande Wang2, Petru Apostol2

  • 1College of Materials Science and Engineering, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, Changsha, 410082, Hunan, P. R. China.

Angewandte Chemie (International Ed. in English)
|August 31, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel phosphonate-based metal-organic framework (MOF) for energy storage. This new MOF exhibits promising ionic conductivity and electrochemical performance as a battery electrode material.

Keywords:
Alkali Ion StorageHigh VoltageIonic ConductionMetal-Organic FrameworkOrganic Battery

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Solid-State Chemistry

Background:

  • Metal-organic frameworks (MOFs) are increasingly explored for energy storage due to their tunable structures.
  • Developing MOFs with inherent ionic conductivity is crucial for efficient energy storage devices.
  • Phosphonate-based MOFs offer unique chemical properties for advanced material applications.

Purpose of the Study:

  • To synthesize and characterize a new phosphonate-based anionic bimetallic MOF for energy storage applications.
  • To investigate the ionic conductivity of the MOF in both non-solvated and solvated states.
  • To evaluate the MOF's performance as a positive electrode material in lithium-ion batteries.

Main Methods:

  • Synthesis of A4-Zn-DOBDP MOF (A=Li+, Na+).
  • Ionic conductivity measurements using electrochemical impedance spectroscopy.
  • Electrochemical performance evaluation as a positive electrode material via cyclic voltammetry and galvanostatic charge-discharge cycling.

Main Results:

  • The novel A4-Zn-DOBDP MOF was successfully synthesized and characterized.
  • Non-solvated MOFs exhibited cation conductivity, with significant enhancement (three orders of magnitude) upon solvation with propylene carbonate.
  • Li4-Zn-DOBDP demonstrated a specific capacity of 140 mAh/g at 3.2 V with 90% capacity retention over 100 cycles.

Conclusions:

  • A new family of electroactive phosphonate-based MOFs with inherent ionic conductivity and reversible cation storage has been developed.
  • The solvated MOF shows potential as a highly conductive solid electrolyte.
  • This research provides insights for designing MOFs with mixed ionic and electronic conduction for next-generation energy storage.