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相关概念视频

Weak Acid Solutions04:02

Weak Acid Solutions

42.0K
Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
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Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

48.5K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
48.5K
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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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...
30.7K
Ionic Crystal Structures02:42

Ionic Crystal Structures

16.7K
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...
16.7K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

85.8K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
85.8K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

19.8K
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...
19.8K

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相关实验视频

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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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基于La(OH) 3的离子导体用于准固态金属电池.

Hanwen Liu1, Leqi Zhao1, Pengfeng Jiang2

  • 1Curtin Centre for Advanced Energy Materials and Technologies (CAEMT), Western Australian School of Mines (WASM), Curtin University, Perth, WA, 6102, Australia.

Advanced materials (Deerfield Beach, Fla.)
|November 29, 2025
PubMed
概括

这项研究介绍了一种新的,稳定于空气中的,并且具有成本效益的基于氧化的导体,用于准固态金属电池. 它增强了离子导电性,抑制了树突的生长,提高了电池的性能和稳定性.

关键词:
基于氧化物导体的导体金属电池是金属电池的一种.几乎固体的电解质电解质.

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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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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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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:

  • 准固态金属电池 (QSSLMB) 提供了先进的储能潜力,但受到电解质不稳定性,高成本和糟糕的接口的阻碍.
  • 开发稳定和高效的电解质对于下一代QSSLMBs至关重要.

研究的目的:

  • 为QSSLMBs开发一种新的,稳定在空气中且具有成本效益的离子导体.
  • 为了提高聚合物电解质的界面兼容性和离子导电性.
  • 解决QSSLMB应用中的关键挑战.

主要方法:

  • 一种基于氧化的导体Li<0.15Sr<0.525La<0.6(OH) 3 (LSLOH) 的合成.
  • 将LSLOH纳入聚乙烯氧化物 (PEO) -LiTFSI聚合物电解质 (PL) 中,形成准固态电解质 (PL-LSLOH).
  • 对PL-LSLOH电解质的电化学表征和LiNi<0.6>Co<0.1>Mn<0.3>O<2>的评估.

主要成果:

  • 合成的LSLOH是空气稳定的,具有成本效益,并在30°C时表现出0.1mS cm-1的Li导电性.
  • 该PL-LSLOH电解质证明改善了Li+运输,并诱导了保护性LiOH和Li2O丰富的固体电解质介相,抑制了树状的生长.
  • 袋式电池在200个周期内以0.83 mA cm-2的速度达到2.2 mAh cm-2的高容量,容量保持率为92.5%.

结论:

  • 基于La(OH) 3的离子导体为开发稳定和高性能QSSLMB提供了有前途的解决方案.
  • 开发的电解质设计有效地解决了QSSLMB技术中的关键障碍,为潜在的扩展铺平了道路.
  • 这项工作为先进的金属电池电解质工程提供了一种新的方法.