相关实验视频

Updated: Jan 15, 2026

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

在"无阳极"硫电池中平衡多硫化物分布

Lennart Wichmann¹, Aleksei Sadykov^2,3, Pascal Seete^4,5

¹Helmholtz - Institute Münster, IMD-4, Forschungszentrum Jülich GmbH, Corrensstr. 46, 48149, Münster, Germany.

|October 8, 2025

概括

带有铜电极的无阳极硫化电池显示出对更高能量密度的承诺. 限制聚硫化物迁移是关键,在现场聚合提供了更好的容量保留,以实现可持续的能源存储.

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:

硫化阳性电极比传统的基于金属的选项具有更高的容量和可持续性.
使用硫化的无阳极电池设计消除了对金属阳极的需求,提高了能量密度并简化了处理.
目前的无阳极硫化电池经常使用,损害了可持续性;铜是绿色能源存储的首选.

研究的目的:

评估方法,使没有阳极的硫化电池具有铜电极的稳定和可逆运行.
研究限制聚硫化物迁移的策略,这是硫化物电池性能的一个挑战.
确定聚硫化物分布的最佳平衡,以提高铜基无阳极系统的可逆性和容量保留.

主要方法:

测试了两种方法来限制聚硫化物迁移:在现场聚合一种电解质添加剂和电聚合物层到铜负电极.
评估了开发的无阳极细胞的电化学性能.
对电池组件中的多硫化物分布进行了量化,以了解其对可逆性的影响.

主要成果:

现场聚合和电聚合物层都使得铜基无阳极硫化电池的可逆循环成为可能.
在现场聚合方法显示出优越的容量保留与电方法相比.
发现正极内部较少的聚硫化物限制对电池的整体可逆性有益,与最初的预期相反.

结论:

使用铜电极的无阳极硫化电池可以通过管理聚硫化迁移的策略实现可逆操作.
电解质添加剂的现场聚合是一种有希望的方法,可以提高这些系统的容量保留.
为了达到最佳性能,需要平衡正负电极之间的可逆性,强调对聚硫化物管理的细微方法.

关键词:

没有阳极的无极管.功能分离器是一种功能分离器.硫电池是硫电池的一种.可逆性的可逆性穿效应的穿效应

更多相关视频

Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway

Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway

Published on: March 7, 2022

Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries

Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries

Published on: May 22, 2018

相关概念视频

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.

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...

Balancing Redox Equations

Balancing Redox Equations

Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...

Batteries and Fuel Cells

Batteries and Fuel Cells

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...