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相关概念视频

Molecular and Ionic Solids02:54

Molecular and Ionic Solids

16.6K
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...
16.6K
Ionic Bonds00:42

Ionic Bonds

117.6K
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...
117.6K
Ionic Strength: Overview01:12

Ionic 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
Alkali Metals03:06

Alkali Metals

19.0K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
19.0K
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

26.8K
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...
26.8K
Electrolysis03:00

Electrolysis

25.8K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
25.8K

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相关实验视频

Updated: May 22, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

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主机-客户逆向工程诱导超离子复合体固体电解质用于高速固态性金属电池.

Xiong Xiong Liu1, Long Pan2, Haotian Zhang1

  • 1School of Materials Science and Engineering, Southeast University, Nanjing, 211189, People's Republic of China.

Nano-micro letters
|March 17, 2025
PubMed
概括

这项研究引入了一种新的"聚合物客在陶宿主"复合体固体电解质 (CSE),使用具有成本效益的SiO2和PVH. 这种设计显著提高了固态电池的离子导电性,提供了低成本,高性能的替代方案.

关键词:
复合体固体电解质是一种复合体.主持人 客人 逆转工程在SiO2纳米粒子中.固态性金属电池是固态性金属电池.超离子导电性 超离子导电性

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

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相关实验视频

Last Updated: May 22, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

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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:

  • 复合固体电解质 (CSEs) 对于固态金属电池至关重要.
  • 现有的CSE通常表现为室温离子导电性差,并且由于昂贵的陶填充剂,成本高.
  • 缓慢的离子运输和高残留溶剂含量限制了当前CSEs的性能.

研究的目的:

  • 使用成本效益高的主机-客户逆向工程战略开发超音波CSE.
  • 通过利用廉价的SiO2纳米粒子作为主体和PVH微球作为客体来克服传统CSE的局限性.
  • 为了实现高级电池应用的高离子导电性和电化学稳定性.

主要方法:

  • 提出了一个主机-客户逆向工程策略,创建了一个独特的"聚合物客户端-陶主机" (PVH-in-SiO2) 架构.
  • 采用具有成本效益的SiO2纳米颗粒作为被动陶主体和聚乙烯化物-六烯 (PVH) 微球作为聚合物客体.
  • 研究了Li-盐解离,界面上的离子运输机制,以及全细胞中的电化学性能.

主要成果:

  • 在25°C时达到1.32 × 10^-3 S cm^-1的异常离子导电性,明显高于传统的CSEs.
  • 由于新型架构,表现出优异的Li-盐分离和高度的自由Li+.
  • 呈现出优异的高速循环性 (在300个循环后在3C保持92.9%的容量) 和高质量负载电极的稳定性.

结论:

  • 主机-客户逆转策略提供了一种简单,低成本的方法来制造超声波CSE.
  • 在固态金属电池中,PVH-in-SiO2 CSEs显示出大规模应用的巨大潜力.
  • 该战略的多功能性得到了通过成功制造具有增强导电性的离子和K离子CSEs的证实.