関連する実験動画
Updated: Feb 17, 2026

05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
22.4K
低温亜鉛電池におけるイオン伝導と界面溶解を促進する高エントロピーポリマー電解質
Lei Ye1, Jiaqi Wei1, Song Yuan1
1Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Laboratory for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Journal of the American Chemical Society
|February 16, 2026
まとめ
研究者らは,水性バッテリー用の高エントロピーヒドロゲル電解質 (HEE) を開発した. この新しい電解質は,氷の形成を防止し,イオン輸送を改善することにより, -80 °Cまでの非常に低い温度でも安定したバッテリー動作を可能にします.
科学分野:
- マテリアルサイエンス 材料科学
- 電気化学 電気化学について
- エネルギー貯蔵 エネルギー貯蔵
背景:
- 水性電池は,安全で持続可能なエネルギー貯蔵を提供します.
- 低温の操作は,電解質の凍結とイオン溶解の緩慢により妨げられます.
研究 の 目的:
- 低温水性バッテリー操作のための新しいヒドロゲル電解質を開発する.
- イオン伝導と界面溶解をゼロ以下の温度で強化するために.
主な方法:
- 高エントロピーのヒドロゲル電解質 (HEE) の製造,ポリメアの複雑性を利用する.
- ポリマーと水の相互作用を調査し,水網を混乱させ,氷の形成を抑制します.
- イオン調整と溶解に対する溶解エントロピーの効果の分析.
主要な成果:
- HEEは氷の形成を抑制し,低温でイオン伝導経路を維持しました.
- 強化された溶解エントロピーは,カチオン解溶を促進し,固体-電解質間相を安定させました.
- 高度可逆性のある亜鉛塗装/脱落 (99.7%のクーロンビック効率) と安定したサイクル (>4000時間) を -80°Cまで実証しています.
結論:
- ハイドロゲル電解質のエントロピーエンジニアリングは,低温性能を効果的に向上させます.
- 開発されたHEEは,極端な条件下でも水性バッテリーの動作を可能にします.
- この戦略は,堅牢なエネルギー貯蔵ソリューションへの道筋を提供します.
関連する概念動画
Standard Electrode Potentials
50.6K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
50.6K
Electrolyte and Nonelectrolyte Solutions
72.3K
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.
72.3K
Aqueous Solutions and Heats of Hydration
18.3K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
18.3K
Formation of Complex Ions
26.3K
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...
26.3K
Batteries and Fuel Cells
31.1K
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...
31.1K
Ion Exchange
1.3K
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
1.3K

