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Related Concept Videos

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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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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Electrogravimetric Analysis: Overview01:30

Electrogravimetric Analysis: Overview

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Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...
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Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

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Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
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Introduction to Electrolytes01:33

Introduction to Electrolytes

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In humans, electrolytes play a vital role in various physiological processes. Balancing electrolyte levels is essential for normal body functions; their imbalance can be life-threatening. The major electrolytes include sodium, potassium, chloride, calcium, phosphate, and bicarbonate. They are primarily involved in physiological processes, such as nerve signal transmission, membrane trafficking, muscle contraction, buffering body fluids, and balancing water levels in the body.
Role of Sodium
One...
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Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

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Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Gel Electrolyte for Li Metal Battery.

Chen Wu1, Wei Zeng1

  • 1Department of Flexible Sensing Technology, Guangdong Key Laboratory of Industrial Surfactant, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou, 510665, P. R. China.

Chemistry, an Asian Journal
|October 11, 2022
PubMed
Summary

Gel electrolytes offer a safer, high-performance alternative for lithium metal batteries (LMBs). This review details their chemical fundamentals and modification strategies for improved battery performance and safety.

Keywords:
Li dendritesLi metal batterieselectrochemical performancegel electrolytemodification strategies

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Lithium metal batteries (LMBs) are researched for high energy density but face safety issues with liquid electrolytes.
  • Liquid electrolytes in LMBs present risks of leakage, flammability, and lithium dendrite growth, hindering development.
  • Gel electrolytes emerge as a promising alternative due to enhanced safety, flexibility, and ionic conductivity.

Purpose of the Study:

  • To comprehensively review the chemical fundamentals of gel electrolytes for LMBs.
  • To systematically highlight recent advancements and modification strategies for gel electrolytes in LMBs.
  • To provide guidance for designing superior gel electrolytes for advanced LMB applications.

Main Methods:

  • Literature review focusing on gel electrolyte chemistry and performance in LMBs.
  • Categorization of modification strategies based on composition, structure, and function.
  • Analysis of recent progress in gel electrolyte development for lithium metal batteries.

Main Results:

  • Gel electrolytes address safety concerns and dendrite issues associated with liquid electrolytes in LMBs.
  • Various modification strategies (composition, structure, function) enhance gel electrolyte properties.
  • Understanding gel electrolyte characteristics is crucial for superior electrochemical performance in LMBs.

Conclusions:

  • Gel electrolytes are vital for overcoming the limitations of liquid electrolytes in lithium metal batteries.
  • Rational design of gel electrolytes through composition, structural, and functional modifications is key.
  • This review offers insights for developing next-generation gel electrolytes for safe and efficient LMBs.