関連する実験動画
Updated: Dec 23, 2025

05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
22.1K
高度可逆リチウム金属アノドのための固体溶液ベースの金属合金フェーズ
Song Jin1,2, Yadong Ye1,2, Yijie Niu1,3
1Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026, China.
Journal of the American Chemical Society
|April 21, 2020
まとめ
リチウムを金属の薄膜に 内部で貼り付ける 新しいリチウム金属アノードを開発しました このデンドライトのない設計は,高エネルギー密度のバッテリーのサイクル安定性と安全性を高めます.
科学分野:
- 電気化学
- 材料科学
- エネルギー貯蔵
背景:
- リチウム金属電池はエネルギー密度が高いが,アノド反応性,デンドライト形成,低サイクル安定性がある.
- これらの問題を緩和する現在の戦略は,表面積とそれに関連する寄生体の反応を防ぐことがしばしば失敗します.
- リチウム金属アノドのデンドライトの成長は,バッテリーの安全性と性能にとって重要な課題です.
研究 の 目的:
- リチウム金属アノドの新型内向型プラッティングメカニズムを実証する
- リチウム金属電池の表面塗装とデンドライト形成の限界を克服するために.
- 高エネルギー密度のエネルギー貯蔵装置のサイクル安定性と安全性を向上させる.
主な方法:
- リチウムプレッティングを駆動する可逆固体溶液ベースの合金相変化を使用します.
- リチウムの原子を金属の薄膜 (数十ミクロメートルの厚さ) に内向的に増殖させる.
- 固体溶液合金を含むリチウム化と脱リチウム化プロセスを調査する.
主要な成果:
- デンドライトのないリチウム塗装を成功裏に証明しました
- クーロンビック効率を99. 5±0. 2%向上した.
- 1660 mA hg−1 (3.3 mA h cm−2) の高い可逆容量を得ました.
結論:
- 表面積積とデンドライトの形成を効果的に防ぐ.
- この方法は,リチウム金属アノドのサイクル安定性と安全性を大幅に高めます.
- 開発されたアノードは 次世代の高エネルギー密度バッテリーに 大きな希望を示しています
関連する概念動画
Weak Acid Solutions
41.8K
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...
41.8K
Electrodeposition
1.2K
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
1.2K
Extraction: Advanced Methods
997
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
997
Metallic Solids
20.3K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.3K
Bonding in Metals
51.4K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
51.4K
Formation of Complex Ions
25.4K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
25.4K

