関連する実験動画
Updated: May 10, 2025
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
21.6K
環境温度固体電池のための単離ポリマー塩中の電解質
Huaijiao Wang1, Peng Wen1,2, Yixuan Liu1
1State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
Journal of the American Chemical Society
|April 21, 2025
まとめ
単離ポリマー塩の新型電解質は,室温での動作を可能にする優れたイオン伝導性と安定性のためのイオン集積を形成することによって,固体電池の性能を向上させます.
科学分野:
- 材料科学
- 電気化学
- ポリマー化学
背景:
- 固体ポリマー電解質 (SPEs) は,高性能固体電池にとって重要であり,高いイオン伝導性とインターフェイスの安定性を要求する.
- SPEの溶解構造の調節は,インターフェイスの安定性を改善するが,しばしばイオン伝導性を損なう.
研究 の 目的:
- 高いイオン伝導性と強化された界面安定性の両方を達成する新しい単離ポリマー-in-塩 (SIP-in-塩) の電解質を開発する.
- SIP-in-塩の電解質におけるナノメトリックの浸透性イオン集積物 (p-AGG) の形成と性質を調査する.
主な方法:
- 単離ポリマー塩中の電解質とイオンポリマー骨組みの合成
- 電解質のイオン伝導性と界面特性の特徴.
- p-AGGを中心に,電解質内の構造とイオン輸送メカニズムを分析する.
主要な成果:
- SIP-in-salt電解質は,高塩分濃度で均質で相互接続されたナノメトリックの浸透性イオン集積物 (p-AGG) を形成する.
- p-AGGはリチウム+アニオンの解離を強め,リチウム+輸送経路を継続的に促進する.
- 伝統的な塩中のポリマー電解質と比較して,Li+の伝導性が100倍改善され,25°Cで電池の動作が可能になりました.
結論:
- 開発されたSIP-in-salt電解質は,イオン溶解構造を最適化することによって,SPEsを前進させるための有望な戦略を提供します.
- このアプローチにより 低温で動作する 次世代の高性能固体電池が 実現できます
さらに関連する動画
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
12.9K
10:03Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
25.4K
関連する概念動画
02:54Molecular and Ionic Solids
16.5K
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...
16.5K
01:17Ion Exchange
395
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...
395
02:21Electrolyte and Nonelectrolyte Solutions
61.9K
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.
61.9K
01:19Ionic Strength: Effects on Chemical Equilibria
1.2K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
In this solution, the primary...
1.2K
02:54Ions as Acids and Bases
22.9K
Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
22.9K
01:12Ionic Strength: Overview
1.2K
The ionic strength of a solution is a quantitative way of expressing the total electrolyte concentration of a solution. This concept was first introduced in 1921 by two American physical chemists, Gilbert N. Lewis and Merle Randall, while describing the activity coefficient of strong electrolytes. During the calculation of ionic strength (I or μ), all the cations and anions are considered. However, the concentration (c) of an ion with a greater charge number (z) has a greater contribution...
1.2K