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関連する概念動画

Weak Acid Solutions04:02

Weak Acid Solutions

Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

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,...
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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...
DC Battery01:21

DC Battery

A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
Electrochemical Cells01:28

Electrochemical Cells

Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not electrons—to...
The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

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関連する実験動画

Updated: Jul 20, 2026

Construction and Testing of Coin Cells of Lithium Ion Batteries
07:23

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

リチウム電池用のリチャージ可能なLI2O2電極

Takeshi Ogasawara1, Aurélie Débart, Michael Holzapfel

  • 1School of Chemistry, University of St. Andrews, North Haugh, Fife, UK

Journal of the American Chemical Society
|January 26, 2006
PubMed
まとめ

再充電可能なリチウム酸素電池は,リチウムイオン電池よりも5〜10倍のエネルギー貯蔵を提供します. この研究は,持続可能な,高容量のエネルギー貯蔵を可能にする,それらの実用的な使用のための主要な要件を確認しています.

科学分野:

  • 電気化学 電気化学について
  • 材料科学 材料科学とは
  • エネルギー貯蔵 エネルギー貯蔵

背景:

  • 再充電式リチウム電池は,エネルギー貯蔵に不可欠ですが,充電能力の制限があります.
  • 現在のリチウムイオン技術は,インターカレーション電極のリチウム貯蔵能力によって制限されています.
  • 地球温暖化により,現在のリチウムイオン能力を超えた先進的なエネルギー貯蔵ソリューションが必要になります.

研究 の 目的:

  • 再充電可能なリチウム酸素 (Li/O2) バッテリーを,高容量エネルギー貯蔵の代替品として研究する.
  • Li/O2 バッテリーの成功した動作のための重要な前提条件を証明する.
  • 従来のインターキャレーション電極の電荷貯蔵の限界を克服するために.

主な方法:

  • 充電過程中の過酸化リチウム (Li2O2) の分解を分析するために,in situ質量スペクトロメトリを用いた.
  • Li/O2 バッテリーシステムの持続性と安定性を評価するために,充電/放電サイクルテストを実施します.
  • Li/O2 バッテリー反応における触媒の役割を調査する.

主要な成果:

  • 放電中に形成された過酸化リチウム (Li2O2) は,充電中にリチウム (Li) と酸素 (O2) に分解され,再充電性の重要なステップであることを実証しました.

さらに関連する動画

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

Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery
08:18

Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery

Published on: July 12, 2016

関連する実験動画

Last Updated: Jul 20, 2026

Construction and Testing of Coin Cells of Lithium Ion Batteries
07:23

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

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

Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery
08:18

Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery

Published on: July 12, 2016

  • この分解とその後のサイクルが,触媒の有無に関わらず,複数のサイクルで持続可能であることを確認しました.
  • 伝統的なリチウムイオン電池と比較して,インターカレーション電極を放棄することによって,理論的な充電貯蔵容量 (5〜10倍) が大幅に増加しました.

    • 結論:

    • 再充電可能なリチウム酸素電池は,エネルギー貯蔵能力を大幅に高めるための有望な技術です.
    • Li2O2の分解と持続可能なサイクルが実証されていることは,Li/O2電池の主要な運用前提条件を裏付けている.
    • この研究は,世界のエネルギー貯蔵のニーズに対処し,地球温暖化と戦うために次世代のバッテリーを開発するための道を開く.