相关实验视频
Updated: Jun 21, 2025

06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.3K
作为水性离子电池的稳定阳极的化诱导异质超级晶格Zn/ZnLi
Chao Hu1, Zefang Yang1, Qi Zhang1
1Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China.
Angewandte Chemie (International ed. in English)
|July 10, 2024
概括
一个新型的异质超网格Zn/ZnLi阳极结构有效地防止电池中树脂的生长. 这种稳定的设计提高了循环性能,并为无树的金属阳极提供了新的策略.
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
- 纳米技术 纳米技术
背景情况:
- 在 Zn 金属阳极中均的沉积对于抑制树突的生长至关重要.
- 现有的3D性宿主通常由于循环过程中层剥离而遭受不良稳定性.
研究的目的:
- 设计和制造一种新的,稳定的3D阳极结构,用于无金金属阳极.
- 为了研究均沉积和增强循环稳定的机制.
主要方法:
- 使用电化学化制造一个异质超网Zn/ZnLi (HS-Zn/ZnLi) 阳极的制造.
- 使用结合能量的分析和剥离能量的计算.
- 在操作过程中,对和剥离行为进行光学观察.
主要成果:
- 该HS-Zn/ZnLi阳极显示了由性ZnLi位点引导的均Zn核和无树突沉积.
- 在没有短路的情况下,在2 mA cm-2下实现了超过2800小时的稳定循环.
- 该策略已成功扩展到HS-Zn/ZnNa和HS-Zn/ZnK阳极,在水性离子电池 (AZIB) 中表现出增强的性能.
结论:
- 开发的HS-Zn/ZnLi阳极提供了卓越的循环稳定性和树抑制.
- 这种异质超网格策略为开发稳定,高性能的无树金属阳极提供了有前途的方法.
相关概念视频
Batteries and Fuel Cells
27.3K
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...
27.3K
Standard Electrode Potentials
43.7K
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...
43.7K
Trends in Lattice Energy: Ion Size and Charge
23.8K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
23.8K
Formation of Complex Ions
23.6K
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...
23.6K

