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関連する概念動画

Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

63.8K
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.
63.8K
Solvating Effects02:12

Solvating Effects

7.6K
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
7.6K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

64.1K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
64.1K
Formation of Complex Ions03:45

Formation of Complex Ions

24.0K
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...
24.0K
Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

15.0K
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...
15.0K
Electrolytes: van't Hoff Factor03:08

Electrolytes: van't Hoff Factor

33.6K
Colligative Properties of Electrolytes
The colligative properties of a solution depend only on the number, not on the identity, of solute species dissolved. The concentration terms in the equations for various colligative properties (freezing point depression, boiling point elevation, osmotic pressure) pertain to all solute species present in the solution. Nonelectrolytes dissolve physically without dissociation or any other accompanying process. Each molecule that dissolves yields one...
33.6K

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関連する実験動画

Updated: Sep 9, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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高圧リチウムイオン電池のための深層エウテクティック電解質におけるリチウムイオン伝導と溶解構造の分離

Shida Xue1, Xiangming Yao1, Zhikang Deng2

  • 1School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, China.

Science bulletin
|August 31, 2025
PubMed
まとめ

この研究は,インターフェイスを安定させ,伝導性を改善することによって,リチウムイオン電池のための深層エウテクティック準固体電解質 (DES) を強化します. 高圧電池の性能のために イオン伝導性とインターフェースの安定性をバランスさせる新しい戦略です

キーワード:
深層エウテクティック電解質ディメチルスルフォンインターフェイスの安定性リチウムイオン伝導準固体電解質

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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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Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
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関連する実験動画

Last Updated: Sep 9, 2025

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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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Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
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Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

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科学分野:

  • 材料科学
  • 電気化学
  • バッテリー技術

背景:

  • ディメチルスルフォン (DMS) ベースの深層エウテクティック準固体電解質 (DES) はリチウムイオン電池にとって有望ですが,インターフェイスの不安定性があります.
  • 溶解層を変化させることで安定性を向上させる現在の方法は,しばしばイオン伝導性を低下させ,バッテリーの性能を阻害する.

研究 の 目的:

  • バッテリーの性能を改善するために,DESの調整構造からLi+伝導を切り離す戦略を開発する.
  • 高圧リチウムイオン電池のインターフェイス安定性とイオン伝導性を同時に向上させる.

主な方法:

  • リチウム二酸化フッ素酸塩 (LiDFOB) を組み込み,アニオンに富んだLi+溶解シートを作り,安定したインターフェーズを促進する.
  • ポリビニリデンフッ化物 (PVDF) のフレームワークを統合して,局所的な調整を規制し,迅速なLi+輸送チャネルを確立する.

主要な成果:

  • リチウムイオン電池の高速動作を可能にするイオン伝導性を改善しました.
  • 4. 6 V LiCoO2 カトドとグラファイトアノドの両方で安定したインターフェーズの形成を保証します.
  • 高い電圧下での DES 動作の安定性を証明した.

結論:

  • 階層的な調節戦略は,DESの伝導性とインターフェースの安定性をうまくバランスをとります.
  • このアプローチは,高圧リチウムイオン電池におけるDESの実用的な応用に重要な洞察をもたらします.