無水性陽子伝導のための高温安定チャネルを備えた混合液晶電解質
Shengchao Chai1, Fengrui Xu1, Rongchun Zhang2,3
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China.
Journal of the American Chemical Society
|December 10, 2021
まとめ
ポリオキシメタレート (POM) のクラスターとポリマーを使って 新しい液晶電解質を開発しました この安定した材料は,高度な電気化学装置のための高温無水質陽子伝導を可能にします.
科学分野:
- 材料科学
- 電気化学
- ポリマー科学
背景:
- 先進的な電解質は,現代の電気化学,電子機器にとって不可欠です.
- 液晶は流動性や秩序を保ちますが 高温の安定性には苦労します
- 既存の液晶は,無水質の陽子の伝導を100°C以上で制限する可変メソフェーズを有する.
研究 の 目的:
- 高温の用途に高度に安定した熱型液晶電解質を開発する.
- ポリオックスメタラート (POM) クラスターとズウィテリオンポリマーの無水質プロトン伝導の可能性を調査する.
- エネルギーと電子アプリケーションのための先進的なイオン輸送システムを可能にします.
主な方法:
- ポリオックスメタラート (POM) クラスターとズウィテリオンポリマーリガンドの静電自組成.
- 液晶メソフェーズ構造と安定性の特徴
- 高温での無水質陽子の伝導特性評価
主要な成果:
- 安定した熱型液晶電解質が成功して合成された.
- 電解質は10 nm未満のPOMベースの柱状ドメインを持つ順番の良いメソフェーズを形成した.
- 90~160°Cの安定したナノチャネルで高温無水質陽子伝導を達成した.
結論:
- ポリオックスメタラート (POM) クラスターは,クロスリンクナーおよびプロトン導体として作用し,安定した柱状のチャネルを作成します.
- 開発された液晶電解質は,高性能イオン輸送システムの新しい経路を提供します.
- この研究により,エネルギー貯蔵や高温操作を必要とする電子機器の先進的な応用が可能になります.
関連する概念動画
Electrolyte and Nonelectrolyte Solutions
65.2K
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.
65.2K
Ion Exchange
697
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...
697
Molecular and Ionic Solids
18.4K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
18.4K
Ionic Crystal Structures
15.5K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
15.5K
Aqueous Solutions and Heats of Hydration
15.6K
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...
15.6K
Ionic Bonds
122.9K
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...
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...
122.9K


