相关实验视频
Updated: Mar 10, 2026

06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
5.0K
动态合金编码定位/Costripping,用于树突性低多价值金属电池
Lujun Zhu1, Zhitong Xiao1, Jiashen Meng1
1Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, China.
Journal of the American Chemical Society
|March 8, 2026
概括
一种新的动态合金策略可以抑制多价金属电池中的树突. 这种方法使稳定,高速的阳极用于先进的储能,克服了实际应用的关键限制.
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:
- 多价金属电池提供可持续的,低成本的储能解决方案.
- 金属电池在实际操作条件下面临着树突生长的挑战.
研究的目的:
- 开发一种策略,以抑制金属电池中的树突.
- 为了实现稳定和高性能阳极的大规模储能.
主要方法:
- 采用了一种电化学驱动的动态合金代位/成本剥离策略.
- 该策略使用在氨酸化物电解质中的Al-Mn-Cl-活性.
- 这有助于动态的Al-Mn配位和可逆的Costripping.
主要成果:
- 在实际条件下,可以实现光滑的,无树的阳极.
- 阳极在10 mA cm-2和20 mA h cm-2下表现出超过1000小时的循环稳定性.
- 二氧化石墨细胞的寿命达到了4000个周期,达到24.6mA cm-2.
结论:
- 动态合金策略有效地抑制了树突.
- 这种方法为稳定,高速率,无树的多价金属阳极铺平了道路.
- 这些发现对于推进下一代大规模储能系统至关重要.
相关概念视频
Electrodeposition
1.7K
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...
1.7K
Extraction: Advanced Methods
1.3K
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...
1.3K
Formation of Complex Ions
26.5K
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...
26.5K
Colloidal precipitates
6.7K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
6.7K
Batteries and Fuel Cells
31.7K
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...
31.7K

