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関連する概念動画

Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

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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.
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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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Electrolysis03:00

Electrolysis

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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
24.8K
Ionic Bonds00:42

Ionic Bonds

122.8K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
122.8K
Introduction to Electrolytes01:33

Introduction to Electrolytes

13.6K
In humans, electrolytes play a vital role in various physiological processes. Balancing electrolyte levels is essential for normal body functions; their imbalance can be life-threatening. The major electrolytes include sodium, potassium, chloride, calcium, phosphate, and bicarbonate. They are primarily involved in physiological processes, such as nerve signal transmission, membrane trafficking, muscle contraction, buffering body fluids, and balancing water levels in the body.
Role of Sodium
One...
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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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高エネルギー固体リチウム電池のための弾性電解質

Michael J Lee1, Junghun Han2, Kyungbin Lee1

  • 1George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.

Nature
|January 13, 2022
PubMed
まとめ
この要約は機械生成です。

研究者はより安全で高エネルギーな固体リチウム電池のための新しい弾性固体電解質を開発しました. これらの高度な電解質は,現在の材料の限界を克服し,リチウム金属アノドで安定した性能を可能にします.

さらに関連する動画

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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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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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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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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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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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:

  • リチウム金属アノドの固体電池は,従来のリチウムイオン電池の有望な代替品です.
  • 現在の固体電解質は,実用的なアプリケーションの機械的特性と電気化学的性能に問題があります.
  • リチウムデンドライトの増殖は,リチウム金属電池の主要な安全問題です.

研究 の 目的:

  • 機械的,電気化学的特性を持つ先進的な固体電解質を開発する.
  • リチウム金属アノドを使用した高エネルギー固体リチウム電池の安全で効率的な動作を可能にします.
  • 既存の固体電解質の限界を解決する

主な方法:

  • 3D相互接続されたプラスチック結晶相を備えた弾性固体電解質の製造.
  • リチウム塗装/剥離用の銅板のエレストモア電解質のインサイト形成.
  • 高負荷キャソード (LiNi0.83Mn0.06Co0.11O2) を搭載したフルセルを制限条件下で試験する.

主要な成果:

  • 弾性電解質は機械的に頑丈で,イオン伝導性が高く,インターフェイス抵抗性が低い.
  • ボリューム変化によるリチウム塗装と剥離で100%のクーロンビック効率を達成した.
  • 4.5ボルトの全電池で安定した動作を証明し,特異エネルギー>410Wh/kgを供給しています.

結論:

  • 新しい弾性固体電解質は,安定した高エネルギー固体リチウム電池の実行可能な戦略を提供します.
  • この進歩は,リチウム金属電池の機械的安定性と電気化学的性能に関する主要な課題に取り組んでいます.
  • 開発されたシステムは,次世代のエネルギー貯蔵ソリューションの道を開きます.