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Related Concept Videos

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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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 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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Ionic Bonds00:42

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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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

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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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A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Covalent Organic Framework-based Solid-State Electrolytes, Electrode Materials, and Separators for Lithium-ion

Youlong Zhu1, Qiaoshuang Bai1, Shan Ouyang1

  • 1Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, IGCME, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China.

Chemsuschem
|September 14, 2023
PubMed
Summary

Covalent organic frameworks (COFs) show promise for advanced lithium-ion batteries (LIBs). Their unique porous structure enhances lithium-ion storage and transport, offering improved capacity and stability for next-generation energy storage.

Keywords:
covalent organic frameworkselectrode materialslithium-ion batteriesseparatorsolid-state electrolyte

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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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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Global energy demand drives renewable energy storage innovation.
  • Lithium-ion batteries (LIBs) are crucial but require improved materials for capacity and stability.
  • Covalent organic frameworks (COFs) offer unique properties for LIB enhancement.

Purpose of the Study:

  • To review recent advancements in COFs for LIB applications.
  • To highlight COFs' potential in electrolytes, electrodes, and separators.
  • To discuss challenges and future directions for COF-based LIBs.

Main Methods:

  • Literature review of COF synthesis and application in LIBs.
  • Analysis of COF properties relevant to lithium-ion storage and transport.
  • Summarization of composite material strategies involving COFs.

Main Results:

  • COFs exhibit high porosity, tunable structures, and customizable functionalities.
  • Tailored COFs with redox-active sites and porous channels improve lithium-ion management.
  • COFs are effective in (quasi) solid-state electrolytes, electrode materials, and separators.

Conclusions:

  • COFs represent a promising class of materials for next-generation LIBs.
  • Further research into COFs can overcome current challenges in energy storage.
  • COFs offer a pathway to more efficient and stable lithium-ion battery technologies.