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Related Concept Videos

Metallic Solids02:37

Metallic Solids

20.6K
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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Interphase00:54

Interphase

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The cell cycle occurs over approximately 24 hours (in a typical human cell) and in two distinct stages: interphase, which includes three phases of the cell cycle (G1, S, and G2), and mitosis (M). During interphase, which takes up about 95 percent of the duration of the eukaryotic cell cycle, cells grow and replicate their DNA in preparation for mitosis.
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Interphase00:56

Interphase

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The cell cycle occurs over approximately 24 hours (in a typical human cell) and in two distinct stages: interphase, which includes three phases of the cell cycle (G1, S, and G2), and mitosis (M). During interphase, which takes up about 95 percent of the duration of the eukaryotic cell cycle, cells grow and replicate their DNA in preparation for mitosis.
Phases of Interphase
Following each period of mitosis and cytokinesis, eukaryotic cells enter interphase, during which they grow and replicate...
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Alkali Metals03:06

Alkali Metals

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Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
24.6K
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

30.9K
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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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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Flexible Artificial Solid Electrolyte Interphase Formed by 1,3-Dioxolane Oxidation and Polymerization for Metallic

Cheng Li1, Qing Lan1, Yifu Yang1

  • 1College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China.

ACS Applied Materials & Interfaces
|December 18, 2018
PubMed
Summary

Researchers developed a novel artificial solid electrolyte interphase (ASEI) to protect lithium-tin (Li-Sn) alloy anodes in lithium metal batteries. This ASEI prevents dendrite formation, enhancing battery stability and performance.

Keywords:
DOLLi−Sn alloylithium metal anodelithium−sulfur batteriessolid electrolyte interphase

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Lithium metal secondary batteries offer high energy density but suffer from dendrite formation and electrolyte reactions at the anode.
  • Lithium-tin (Li-Sn) alloys are promising anode substrates but require protection against degradation.

Purpose of the Study:

  • To develop a protective layer for Li-Sn alloy anodes to enhance the stability and cycle life of lithium metal batteries.
  • To investigate the efficacy of an artificial solid electrolyte interphase (ASEI) in preventing lithium dendrite growth and side reactions.

Main Methods:

  • Fabrication of an ASEI layer via electrochemical oxidation and polymerization of 1,3-dioxolane with LiTFSI additive.
  • Electrochemical testing of Li-Sn alloy anodes with ASEI for lithium deposition/stripping.
  • Evaluation of Li-Sn alloy anodes protected by ASEI in lithium-sulfur full cells.

Main Results:

  • The ASEI layer is flexible, stable, ion-conductive, and electrically insulating.
  • ASEI-protected Li-Sn anodes demonstrated stable cycling with 98.4% average Coulombic efficiency at 1 mA cm⁻².
  • Li-Sn anodes remained uniform and smooth, free from dendrites and cracks after cycling.
  • Lithium-sulfur full cells utilizing ASEI-protected anodes showed improved discharge capacity and cycleability.

Conclusions:

  • The developed ASEI strategy effectively suppresses lithium dendrites and electrolyte reactions on Li-Sn alloy anodes.
  • This facile ASEI formation method offers a promising solution for stable and high-performance lithium metal batteries.