在结温度下具有高离子导电性的聚合物电解质,用于水性混合电池
Zhongdong Tian1, Yuan Gao1, Peishu Tian1
1School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, P. R. China.
Chemistry, an Asian journal
|November 1, 2024
概括
研究人员使用生物质聚合物开发了一种耐的凝聚合物电解质,用于生物质聚合物使用的水性电池. 这项创新提高了结温度下的性能,使安全和环保的储能能应用得以更广泛.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性电池 (AB) 提供安全,环保和经济高效的能源存储.
- 由于电解质结,在零度以下的温度下AB的性能差,限制了它们的实际使用.
研究的目的:
- 为水性Zn-Li混合动力电池设计一种耐凝聚合物电解质 (GPE).
- 为了提高ABs的离子导电性 (IC) 和低温性能.
主要方法:
- 合成了一种基于生物质的聚合物复合物,该复合物由碳基改性甲基酸盐 (SA) 和zwitterionic betaine (BA) 组成.
- 氨基酸被用来丰富SA上的碳素基,改善IC.
- 在各种温度下,GPE在水性Zn-Li混合电池中进行了测试.
主要成果:
- 开发的GPE具有高离子导电性:在20°C时为41.27mS/cm,在-20°C时为20.96mS/cm.
- 在-20°C下,电池的放电容量是液体电解质电池的两倍.
- 在1°C的300个循环后,电池保持了91.6%的容量,显示出出色的稳定性.
结论:
- 新型GPE显著提高了在零度温度下离子导电性.
- 这一战略提高了水性电池在寒冷环境中的性能和适用性.
- 来自生物质的GPE为可靠的,广泛的温度储能提供了有前途的解决方案.
更多相关视频
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
相关概念视频
02:21Electrolyte and Nonelectrolyte Solutions
62.3K
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.
62.3K
01:17Ion Exchange
555
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...
555
02:42Aqueous Solutions and Heats of Hydration
14.5K
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...
14.5K
02:54Molecular and Ionic Solids
16.9K
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...
16.9K
03:08Electrolytes: van't Hoff Factor
32.9K
Colligative Properties of Electrolytes
The colligative properties of a solution depend only on the number, not on the identity, of solute species dissolved. The concentration terms in the equations for various colligative properties (freezing point depression, boiling point elevation, osmotic pressure) pertain to all solute species present in the solution. Nonelectrolytes dissolve physically without dissociation or any other accompanying process. Each molecule that dissolves yields one...
The colligative properties of a solution depend only on the number, not on the identity, of solute species dissolved. The concentration terms in the equations for various colligative properties (freezing point depression, boiling point elevation, osmotic pressure) pertain to all solute species present in the solution. Nonelectrolytes dissolve physically without dissociation or any other accompanying process. Each molecule that dissolves yields one...
32.9K
03:12Batteries and Fuel Cells
27.0K
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...
27.0K