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関連する概念動画

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Hydrogen Bonds

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A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
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Hydrogen Bonds00:26

Hydrogen Bonds

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Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
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Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
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Standard Electrode Potentials03:02

Standard Electrode Potentials

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On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
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Hess's Law03:40

Hess's Law

55.1K
There are two ways to determine the amount of heat involved in a chemical change: measure it experimentally, or calculate it from other experimentally determined enthalpy changes. Some reactions are difficult, if not impossible, to investigate and make accurate measurements for experimentally. And even when a reaction is not hard to perform or measure, it is convenient to be able to determine the heat involved in a reaction without having to perform an experiment.
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関連する実験動画

Updated: Jan 17, 2026

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高容量,H--導電性固体電解質を用いた可逆水素貯蔵

Takashi Hirose1,2, Naoki Matsui2, Takashi Itoh1

  • 1Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, 4259 Nagatsuta, Midori-ku, Yokohama, Japan.

Science (New York, N.Y.)
|September 18, 2025
PubMed
まとめ
この要約は機械生成です。

低温で効率的に水素を貯蔵する 新しい固体電解質を開発しました この画期的な発明により 高容量で可逆性のある水素電池と蓄電装置が作られ 現在の技術の限界を乗り越える事ができました

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Hydrogen Production and Utilization in a Membrane Reactor
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Hydrogen Production and Utilization in a Membrane Reactor

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関連する実験動画

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Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
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Hydrogen Production and Utilization in a Membrane Reactor
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Hydrogen Production and Utilization in a Membrane Reactor

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科学分野:

  • 材料科学
  • 電気化学
  • エネルギー貯蔵

背景:

  • 水素の貯蔵と電池は,高温脱吸収と電解質の不安定さに直面しています.
  • 従来の方法は水素エネルギーの効率と安全性を制限しています.

研究 の 目的:

  • 電気化学的な水素イオン (H−) 駆動型水素貯蔵を調査する.
  • 低温に水素を貯蔵するための安定した導電性固体電解質を開発する.

主な方法:

  • 新しい抗α-AgI型固体電解質 Ba0.5Ca0.35Na0.15H1.85を開発した.
  • 金属水化物 (例えば,MgH2) との電解質の互換性をテストした.
  • 水素貯蔵性能のためのMg-H2セルを設計し,評価した.

主要な成果:

  • 新しい固体電解質は,優れたH−伝導性と電気化学的安定性を示しています.
  • 高容量 (2030 mAh/g) の可逆水素をMg-H2セルで90°Cで貯蔵する.
  • 安全で効率的な水素と電気の変換が実証されている.

結論:

  • 開発された固体電解質は低温で効率的な水素貯蔵を可能にします.
  • この技術は先進的な水素電池と蓄電装置に 有望な解決策を提供します
  • 既存の水素貯蔵材料の主要な限界を克服する.