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関連する概念動画

Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

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.
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Ionic Crystal Structures02:42

Ionic Crystal Structures

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...
Formation of Complex Ions03:45

Formation of Complex Ions

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...
Ionic Association01:28

Ionic Association

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.
Theory of Strong Electrolytes01:23

Theory of Strong Electrolytes

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...

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Molecular origin of aging of pure Se glass: Growth of inter-chain structural correlations, network compaction, and partial ordering.

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Structural singularities in Ge(x)Te(100-x) films.

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関連する実験動画

Updated: May 11, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

移動性銀イオンと,固体電解質のガラス形成

P Boolchand1, W J Bresser

  • 1Deaprtment of Electrical & Computer Engineering and Computer Science, University of Cincinnati, OH 45221-0030, USA. punit.boolchand@uc.edu

Nature
|April 27, 2001
PubMed
まとめ

研究者は,銀ヨウ化物 (AgI) や銀セレニド (Ag2Se) などの固体電解質を含む複合ガラスを調査した. 彼らは2つの異なる分子構造を特定し,先進的なバッテリーとセンサーアプリケーションのためのイオン輸送に関する洞察を明らかにしました.

科学分野:

  • 材料科学 材料科学とは
  • 固体化学 固体化学
  • 凝縮物質物理学 凝縮物質物理学

背景:

  • シルバーヨド化物 (AgI) やシルバーセレニド (Ag2Se) などの固体電解質は,先進的な材料の重要な成分です.
  • これらの電解質は,電池,センサー,ディスプレイのアプリケーションの電気伝導性を高めるために,ネットワークガラス (カルコゲン化物,酸化物) に組み込まれます.

研究 の 目的:

  • AgIとAg2Seを含む複合ガラスの分子構造を調査する.
  • 分子構造,ガラスの移行温度,およびイオン輸送機構の関係を理解する.
  • 均質合金と相分離複合ガラスを区別するために.

主な方法:

  • ガラスの移行温度測定を用いた複合ガラス構造の分析.
  • 段階分離と均質なネットワーク形成の特徴.
  • ネットワーク接続に基づくバイモダルのガラス移行温度に関する定量分析.

主要な成果:

  • 複合ガラスは,固有の相分離 (バイモダルガラスの移行温度) または顕微鏡で均質なネットワーク (単一ガラスの移行温度) を表します.
  • AgIとAg2Seの相に対するガラス化移行温度を,それぞれ75°Cと230°Cで特定した.
  • バイモダルのガラス移行温度がネットワーク接続性とAg+イオンの高速イオン運動によって説明できることを実証しました.

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
11:04

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion
06:48

Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion

Published on: May 9, 2025

関連する実験動画

Last Updated: May 11, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
11:04

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion
06:48

Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion

Published on: May 9, 2025

結論:

  • この研究は,相分離および均質合金複合ガラスを区別するための方法を提供します.
  • これらの構造を理解することは,スーパーイオン導体におけるイオン輸送を最適化するための鍵です.
  • 発見は,エネルギー貯蔵およびセンシングデバイスのための高性能固体電解質の設計のための洞察を提供します.