相关实验视频
Updated: Jan 11, 2026

06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.8K
调节界面化学,构建一个稳定的固体电解质界面,用于长寿命的金属阳极.
Xiaolong Ren1, Chengwen Wu1, Jiwei Zhang2
1MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions & Shaanxi Provincial Key Laboratory of Condensed Matter Structure and Properties, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710129, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|November 17, 2025
概括
这项研究使用超声波能量为水性电池中的阳极设计了一种稳定的固体电解质介相 (SEI). 这种方法增强了接口稳定性,抑制了树突的生长,并允许超过1800小时的耐用电池运行.
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:
- 稳定的固体电解质间相 (SEI) 形成对于水性电池中的长寿命金属阳极至关重要.
- 当前的方法在实现强大和统一的接口层方面面临着挑战.
- 树突的生长和寄生反应限制了阳极性能和电池寿命.
研究的目的:
- 通过精确的接口化学调节,在阳极上构建一个高度坚固的SEI层.
- 研究外部物理场的使用,特别是超声波能量,以触发SEI形成的新反应途径.
- 为了提高水性电池中金属阳极的界面稳定性和循环耐用性.
主要方法:
- 精确的界面化学规则.
- 应用外部物理场 (超声波能量) 来触发现场SEI形成.
- 描述SEI结构及其对电化学性能的影响.
主要成果:
- 在现场迅速构建了一个统一而稳定的混合型SEI结构.
- 设计的SEI有效地抑制了树突的生长和寄生虫反应.
- 经过修改的阳极表现出了特殊的循环耐用性,在5 mA cm-2.2下稳定运行超过1800小时.
结论:
- 外界场诱导的反应为调节相间化学提供了一条新的途径.
- 超声波能量有助于快速构建稳定的混合SEI层.
- 这种方法为开发水性电池的高性能和长寿命金属阳极提供了有前途的战略.
相关概念视频
Standard Electrode Potentials
49.8K
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...
49.8K
Formation of Complex Ions
25.6K
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...
25.6K
Extraction: Advanced Methods
1.1K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.1K
Electrodeposition
1.2K
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
1.2K

