相关实验视频

Updated: Jun 12, 2025

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Published on: January 20, 2023

氧化物和硫化物异离子接口稳定性的评估,用于开发带有金属电极的固态电池:LLZOの例案

Leonardo Merola¹, Vipin K Singh², Max Palmer³

¹Institute of Physical Chemistry and Center for Materials Research (ZfM), Justus-Liebig-University Giessen, Heinrich-Buff-Ring 17, Giessen D-35392, Germany.

ACS applied materials & interfaces

|September 24, 2024

概括

使用金属电极 (LMEs) 开发多层固态电池 (SSB) 是一个挑战. 这项研究表明,氧化和酸接口为LME SSB提供了有前途的性能,特别是在优化表面处理的情况下.

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
电池技术电池技术

背景情况:

使用金属电极 (LME) 开发固态电池 (SSB) 受到缺乏满足所有要求的单一固体电解质 (SE) 的阻碍.
多层SSB通过结合不同的SE来克服单个材料限制,提供了一个解决方案.
对无机异离子接口,特别是氧化硫化的研究至关重要,但只是初步研究.

研究的目的:

通过电化学方法研究Li$_{6.25}$Al$_{0.25}$La$_{3}$Zr$_{2}$O$_{12}$ (Al-LLZO) 和硫化物基础的SEs (argyrodite Li$_{6}$PS$_{5}$Cl [LPSCl]和 Li$_{7}$P$_{3}$S$_{11}$ [LPS711]) 之间的异离子接口.
在不同温度和压力下评估这些接口的电特性.
评估Al-LLZO表面处理对接口性能和稳定性的影响.

主要方法:

在平衡状态下的多层对称细胞上进行电化学阻抗光谱 (EIS).
温度和压力依赖的阻抗分析.
长期循环稳定性测试 (900小时在1.0mAh·cm$^{-2}$).

主要成果:

该Al-LLZO下载LPSCl接口表现出比Al-LLZO下载LPS711低的电阻,由几何收缩电阻解释.
热处理Al-LLZO通过减轻被动化层 (碳酸盐/氧化物) 来降低接口激活能量.
与Al-LLZO 173LPS711相比,Al-LLZO 173LPSCl接口在循环过程中显示出更好的阻抗稳定性,特别是在表面处理后.

结论:

氧化水酸 (Al-LLZO水LPSCl) 组合是具有LME的多层SSB的有希望的候选者.
优化LLZO表面处理对于提高异离子接口性能和稳定性至关重要.
建议进行进一步的研究,包括对接口的详细化学分析.

关键词:

LLZOZO LLZO 在线观看在LPS中使用LPS.在LPSClCl中使用.热处理热处理的方法异离子接口异离子接口氧化物的氧化物.固态电池是一种固态电池.硫化物硫化物是什么

更多相关视频

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

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

Published on: November 11, 2013

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

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

Published on: December 20, 2016

相关概念视频

Ladder Diagrams: Redox Equilibria

Ladder Diagrams: Redox Equilibria

Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

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.

Complexation Equilibria: Factors Influencing Stability of Complexes

Complexation Equilibria: Factors Influencing Stability of Complexes

In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Standard Electrode Potentials

Standard Electrode Potentials

On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...