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関連する概念動画

Intermolecular Forces03:13

Intermolecular Forces

61.4K
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...
61.4K
Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

15.1K
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...
15.1K
Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

64.2K
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.
64.2K
Intermolecular Forces in Solutions02:28

Intermolecular Forces in Solutions

34.9K
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,...
34.9K
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
Radical Formation: Homolysis00:54

Radical Formation: Homolysis

3.7K
A bond is formed between two atoms by sharing two electrons. When this bond is broken by supplying sufficient energy, either two electrons can be taken up by one atom forming ions by the cleavage called heterolysis, or the two electrons are shared by two atoms, with one each creating radicals by the cleavage called homolysis.
3.7K

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関連する実験動画

Updated: Sep 20, 2025

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
08:01

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization

Published on: August 18, 2022

3.2K

直接氷をH2とO2に分割することが可能

Bohan Deng1,2, Guangqiang Yu3, Wei Zhao1

  • 1State Key Laboratory of New Ceramic Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.

Journal of the American Chemical Society
|May 23, 2025
PubMed
まとめ
この要約は機械生成です。

研究者達は -40°Cの低温で 固体氷を水素と酸素に分解することに成功しました 氷を固体電解質として利用することで 効率的なエネルギー変換と貯蔵が可能になります

さらに関連する動画

An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions
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An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions

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The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
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The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Published on: September 30, 2014

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関連する実験動画

Last Updated: Sep 20, 2025

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
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A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization

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An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions
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An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions

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The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
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The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Published on: September 30, 2014

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科学分野:

  • 電気化学
  • 材料科学
  • エネルギー貯蔵

背景:

  • H2O (水) の分子分解は,エネルギー変換と貯蔵に不可欠です.
  • 液体の水の分裂は確立されていますが 固体氷の分解は依然として課題です

研究 の 目的:

  • 氷が零下温度で 直接分裂することを証明するために
  • 電気化学用固体電解質としての氷を研究する.
  • 氷を用いたエネルギー変換と貯蔵の新たな方法を模索する

主な方法:

  • 固体氷の電気化学分析
  • 氷の中の陽子と水酸化物の伝導を測定する.
  • 氷を割るための電圧と電流の密度測定
  • 低温でのエネルギー効率の計算

主要な成果:

  • 氷の直接分裂は -40 °C以下でも成功している.
  • 陽子と水酸化物の伝導のための高性能固体電解質として機能します.
  • 液体の水よりも 1-2 倍の大きさです
  • 氷の分裂は2.18Vで達成され,エネルギー効率は -10°Cで約70%である.
  • 液体水分裂に固有の水素クロスオーバー問題を回避する.

結論:

  • 氷はゼロ以下の温度で 電気化学的に直接分裂し 新しいエネルギー変換経路を開くことができます
  • 氷は効果的な固体電解質として機能し,陽子の移動性において液体の水よりも優れ,水素のクロスオーバーを避ける.
  • これらの発見は,氷の電気化学的過程に関する新しい洞察を提供し,低温のエネルギー貯蔵ソリューションの機会を提供します.