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関連する概念動画

Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

18.3K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
18.3K
Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

72.3K
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.
72.3K
Intermolecular Forces03:13

Intermolecular Forces

73.1K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
73.1K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

50.4K
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. 
50.4K
Ionic Bonds00:42

Ionic Bonds

132.7K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
132.7K
Intermolecular Forces in Solutions02:28

Intermolecular Forces in Solutions

40.1K
The formation of a solution is an example of a spontaneous process, a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Such a solution is called an ideal solution. A mixture of ideal gases (or gases such as helium and argon,...
40.1K

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Updated: Feb 17, 2026

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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固体-電解質のインターフェーズが水性電解質にどのように形成されるか

Liumin Suo1, Dahyun Oh2,3, Yuxiao Lin4

  • 1Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics , Beijing 100190, China.

Journal of the American Chemical Society
|December 1, 2017
PubMed
まとめ
この要約は機械生成です。

研究者らは,高度なバッテリーに不可欠な水性固体電解質インターフェーズ (SEI) を調査した. この研究は,より安全で高エネルギーな水性リチウムイオン電池を可能にする,水性SEIの形成機構と組成を明らかにします.

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

Published on: December 20, 2016

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In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
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In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

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関連する実験動画

Last Updated: Feb 17, 2026

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

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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

Published on: December 20, 2016

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In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
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In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

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科学分野:

  • 電気化学
  • 材料科学
  • バッテリー技術

背景:

  • 固体電解質インターフェーズ (SEI) は,リチウムイオン電池 (LIB) などの電気化学装置における電解質の安定化に不可欠である.
  • 伝統的に,SEIの形成は非水性電解質に限定され,バッテリーの性能と安全性を制限しています.
  • 最近の進歩により,水性電解質のSEI形成が可能になり,電気化学的安定性ウィンドウが拡張され,高電圧水性LIBが可能になりました.

研究 の 目的:

  • 水性SEIの化学と形成メカニズムの解明,これはほとんど不明のままです.
  • バッテリー環境における水性SEIの組成,微細構造,および安定性を包括的に特徴づける.
  • 効果的な水性SEI層を設計するための基本原則を確立する.

主な方法:

  • スペクトロスコーピーの組み合わせで
  • 電気化学的分析方法が用いられている.
  • インターフェーズ形成のダイナミックな理解のための組み込み計算モデル.

主要な成果:

  • アノド表面の密度の高い保護インターフェーズの動的形成を明らかにした.
  • SEI形成の重要な要因として,塩アニオン,溶けたガス,水分子の競争分解を特定した.
  • 水性SEIの化学組成,微細構造,および安定性の包括的な特徴を提供した.

結論:

  • 水性SEIの成功形成を規定する基本原則を確立した.
  • 詳細な理解は,改善された水性バッテリー化学のためのインターフェーズを調整するのに役立ちます.
  • この作業により,より安全で高エネルギー密度の水性LIBの開発が進められます.