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Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

56.2K
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. 
56.2K
Ionic Crystal Structures02:42

Ionic Crystal Structures

21.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
21.7K
Ionic Association01:28

Ionic Association

202
The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.
202
Types Of Superconductors01:28

Types Of Superconductors

1.9K
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
1.9K
Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

27.8K
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:
27.8K
Theory of Strong Electrolytes01:23

Theory of Strong Electrolytes

114
The interionic forces of the strong electrolytes depend on the solvent's dielectric constant, which is the ability of a solvent to store electrical energy, based on its polarizability. and the solution's concentration. In high-dielectric solvents and in dilute solutions, weak electrostatic forces keep ions apart. However, in low-dielectric solvents or concentrated solutions, stronger interionic forces may cause ions to pair up as ionic doublets despite being fully ionized. The theory of strong...
114

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Updated: Apr 18, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

69.8K

ヨイド基のLi7P2S8I超イオン導体である.

Ezhiylmurugan Rangasamy1, Zengcai Liu, Mallory Gobet

  • 1Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.

Journal of the American Chemical Society
|January 21, 2015
PubMed
まとめ
この要約は機械生成です。

新しい固体リチウムイオン導体であるLi ((7) P ((2) S ((8) Iは,10Vまでの驚くべき電気化学的安定性を示しています.この材料はリチウムイオン電池の性能を向上させ,低温加工を通じて産業での採用を可能にします.

さらに関連する動画

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

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関連する実験動画

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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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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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
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科学分野:

  • 材料科学 材料科学とは
  • 電気化学 電気化学について
  • 固体化学 固体化学

背景:

  • 固体電解質は,次世代のリチウムイオン電池に不可欠です.
  • 高い電気化学的安定性と良いイオン伝導性を同時に達成することは,依然として課題です.
  • ヨウ素の固有の酸化不安定性は,電気化学システムでの使用をしばしば制限する.

研究 の 目的:

  • 強化された電気化学的安定性を持つ新しい固体リチウムイオン導体を開発する.
  • 材料の安定化とインターフェイス特性の改善におけるヨウ素の組み込みの役割を調査する.
  • 潜在的な産業用途のための材料の加工可能性を評価する.

主な方法:

  • β-Li((3) PS(4) とLiIからLi(7) P) 2) S) 8) I固体電導体の合成.
  • 電気化学的安定性ウィンドウの決定は, Li/Li (((+) と対比して10Vまでのサイクル電圧測定を用いて行われます.
  • 金属リチウムアノドによる接面特性およびイオン伝導性の評価.
  • 低温膜製造の加工可能性の評価.

主要な成果:

  • Li(7)P(2)S(8)I導体は,Li/Li(+) に対して10Vまでの優れた電気化学的安定性を示した.
  • 調整された構造にヨウ素を組み込むことは,酸化不安定性を効果的に抑制しました.
  • この材料は,金属リチウムアノドによる安定性,改善された界面運動,および高いイオン伝導性を示した.
  • 密度の高い膜の容易な製造は,低温の膜加工によって達成されました.

結論:

  • 開発されたLi(7)P(2)S(8)I固体電極は,高圧リチウムイオン電池のための有望なソリューションを提供します.
  • 構造的組み込みを通じてヨウ素を安定させることは,電気化学的な限界を克服するための実行可能な戦略です.
  • 材料の加工可能性と性能特性により,工業規模でのバッテリー製造に適しています.