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Related Concept Videos

Storage01:23

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A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
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Trends in Lattice Energy: Ion Size and Charge02:54

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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Polymer Classification: Crystallinity

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Common Ion Effect

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Predicting Precipitation
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Ion Channels

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The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
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Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries
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High-Crystallinity Urchin-like VS4 Anode for High-Performance Lithium-Ion Storage.

Guang Yang1, Bowei Zhang2, Jianyong Feng1

  • 1School of Materials Science and Engineering , Nanyang Technological University , 50 Nanyang Avenue , 639798 , Singapore.

ACS Applied Materials & Interfaces
|April 7, 2018
PubMed
Summary

Controllable synthesis of vanadium sulfide (VS4) anode materials with diverse morphologies, including urchin-like structures, significantly enhances lithium-ion battery performance. The urchin-like VS4 exhibits superior electrochemical properties due to its unique structure, offering insights for advanced battery material design.

Keywords:
VS4electrochemical characteristicskinetic parameterlithium storageurchin-like

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Vanadium sulfide (VS4) is a promising anode material for lithium-ion batteries.
  • Controlling the morphology of VS4 is crucial for optimizing its electrochemical performance.
  • Understanding the structure-property relationship is key to designing high-performance battery materials.

Purpose of the Study:

  • To synthesize VS4 anode materials with controllable morphologies using a facile solvothermal method.
  • To systematically investigate the structure-property relationships of VS4 with different morphologies.
  • To establish a structure-property correlation for optimizing lithium-ion storage behavior.

Main Methods:

  • Solvothermal synthesis using various alcohols as solvents to control VS4 morphology.
  • Structural characterization (e.g., SEM, TEM, XRD - implied).
  • Electrochemical performance evaluation (e.g., cyclic voltammetry, electrochemical impedance spectroscopy).

Main Results:

  • Successfully synthesized VS4 with diverse morphologies: microflower, octopus-like, seagrass-like, and urchin-like.
  • Electrochemical performance depends significantly on morphology, crystallite size, and specific surface area.
  • Urchin-like VS4 demonstrated the best performance due to its high surface area and efficient electron transport.

Conclusions:

  • Morphology-controlled synthesis is vital for tailoring VS4 anode performance in lithium-ion batteries.
  • The urchin-like VS4 structure provides enhanced lithium-ion storage capabilities.
  • This study offers fundamental insights into VS4 lithium-ion storage and guidance for designing other vanadium-based materials.