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関連する概念動画

Acid Halides to Alcohols: LiAlH4 Reduction01:19

Acid Halides to Alcohols: LiAlH4 Reduction

2.6K
Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
2.6K
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

26.8K
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...
26.8K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

39.9K
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. 
39.9K
Ionic Crystal Structures02:42

Ionic Crystal Structures

14.0K
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...
14.0K
Acid Halides to Ketones: Gilman Reagent01:14

Acid Halides to Ketones: Gilman Reagent

2.7K
Lithium dialkyl cuprate, also known as Gilman reagents, selectively reduces acid halides to ketones. The acid chloride is treated with Gilman reagent at −78 °C in the presence of ether solution to produce a ketone in good yield.
As shown below, the mechanism proceeds in two steps. First, one of the alkyl groups of the reagent acts as a nucleophile and attacks the acyl carbon of the acid chloride to form a tetrahedral intermediate. This is followed by the reformation of the...
2.7K

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関連する実験動画

Updated: May 17, 2025

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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完全固体リチウムカルコゲン電池の強化のためのハリド分離

Jieun Lee1, Shiyuan Zhou1, Victoria C Ferrari1

  • 1Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, USA.

Science (New York, N.Y.)
|May 15, 2025
PubMed
まとめ

完全固体電池の機械化学的混合はハライド分離を引き起こし,リチウムカルコゲン細胞のイオン輸送と安定性を高めるインターフェイス層を形成します. この技術革新により 次世代のエネルギー貯蔵装置の性能と サイクル寿命が向上します

さらに関連する動画

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

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
10:03

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

25.4K

関連する実験動画

Last Updated: May 17, 2025

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

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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

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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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:

  • 複合電極製造は全固体電池の鍵ですが,十分に理解されていません.
  • バッテリーの性能には インターフェイスの安定性とイオン輸送が不可欠です

研究 の 目的:

  • 複合電極混合中の機械化学反応の影響を調査する.
  • 固体電池のインターフェイスでのハライド分離を理解する.

主な方法:

  • 電気活性物質,固体電解質,導電性炭素を高速で混ぜる
  • マルチモダルシンクロトロンX線探査機と冷凍伝送電子顕微鏡による特徴化.

主要な成果:

  • 機械化学反応によるインターフェイスで観測された普遍的なハライド分離.
  • 立地で形成されたリチウムハリド層はイオン輸送を改善し,カソッド容量の変化を抑制します.
  • 100%に近い利用率と,完全な固体状態のリチウムカルコゲン細胞における優れたサイクル安定性を実証した.

結論:

  • 機械化学的混合は,固体電池の有益なインターフェイス層を設計するための経路を提供します.
  • この発見により 高エネルギーで安定した 完全固体リチウムカルコゲン電池の 開発が進められました