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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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Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

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Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
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Updated: Jun 2, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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固体液体電池は,固体と硫黄の反応が速い

Huimin Song1, Konrad Münch2,3, Xu Liu1

  • 1Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing, China.

Nature
|January 15, 2025
PubMed
まとめ
この要約は機械生成です。

この研究は,全固体リチウム硫黄電池のための新しいリチウムチオボロフォスファートヨウ素ガラスの固体電解質を導入しています. この突破により 固体から固体への硫黄酸化還元反応が速くなり バッテリー性能とサイクル寿命が向上します

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Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
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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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関連する実験動画

Last Updated: Jun 2, 2025

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Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
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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:

  • 全固体リチウム硫黄電池 (ASSLSB) は,次世代のエネルギー貯蔵に高いエネルギー,安全性,低コストを提供します.
  • ASSLSBの低速性能と短いサイクル寿命は,三相境界で緩やかな固体-固体硫黄還酸化反応 (SSSRR) に起因する.

研究 の 目的:

  • 緩慢なSSRRを強化することでASSLSBの限界に対処する.
  • SSSRRを加速させるための酸化還元媒介剤として機能する新しい固体電解質を開発する.

主な方法:

  • リチウムチオボロフォスファートヨウ化物 (LBPSI) のガラス相固体電解質 (GSEs) の開発.
  • 固体電解質内のI-/I2/I3-の可逆的還元作用を表面的還元作用媒介として利用する.
  • 活性部位の密度と反応運動に対する酸化還元媒体の影響を調査する.

主要な成果:

  • LBPSI GSEは迅速なSSRRを促進し,活発なサイトの密度を大幅に増加させました.
  • ASSLSBは2°Cで1,497 mAhのg−1硫黄の容量で超高速充電を行い,20°Cで784 mAhのg−1硫黄を維持した.
  • 極端な速さ (432 mAh g−1 硫黄 150°C,60°C) とサイクル安定性 (5°Cで2万5千サイクルにわたって80. 2%の保持率) で例外的な性能が観察されました.

結論:

  • 開発されたLBPSI GSEは,SSSRRを効果的に媒介し,ASSLSBの以前の制限を克服します.
  • この再酸化媒介によるアプローチは,ASSLSBの高い速度と優れたサイクル安定性を可能にします.
  • この発見は,高度で高エネルギーで安全なASSLSBの道を開きます.