相关实验视频

Updated: Jul 18, 2025

Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO

Improved Heterojunction Quality in Cu2O-based Solar Cells Through the Optimization of Atmospheric Pressure Spatial Atomic Layer Deposited Zn1-xMgxO

Published on: July 31, 2016

有机合物蚀刻方法用于在现场构建梯形保护层,以达到稳定的水性 Zn 极

Li Li¹, Hang Yang¹, Zeyu Yuan¹

¹College of Physics, College of Chemistry, the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Center of Future Science, Jilin University, Changchun, Jilin, 130012, China.

Small (Weinheim an der Bergstrasse, Germany)

|August 27, 2023

概括

有机带蚀刻方法在阳极上形成了一层保护层,提高了水性Zn离子电池的稳定性. 这增强了沉积,并抑制了树的生长,从而延长了电池的寿命.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
储能储能储能储能储能储能

背景情况:

水性离子电池 (AZIB) 的稳定性对于实际应用至关重要.
阳极剥离/板的可逆性显著影响了AZIB的性能.
开发有效的Zn阳极保护层对于克服稳定性挑战至关重要.

研究的目的:

使用有机带蚀刻方法,在Zn阳极上开发一个现场的多功能保护层.
为了研究保护层对沉积动力学和树枝状物抑制的影响.
为了提高AZIB的长期稳定性和循环性能.

主要方法:

使用0.02 M [Fe(CN) 6]3-有机合物蚀刻溶液进行 Zn 阳极表面修饰.
描述in situ保护层的结构和组成.
评估AZIBs中改性Zn阳极的电化学性能,包括库伦比效率和长期循环稳定性.
研究金属离子添加剂 (Ni2+,Mn2+,Cu2+) 对接口层形成和 Zn 沉积的影响.

主要成果:

蚀刻过程在Zn阳极上形成了一个独特的梯形保护层,阻断了直接的电极-电解质接触.
含有C,N,Zn和Fe的保护层表现出强烈的性,促进了Zn2+沉积动力学和3D核化.
经过修改的 Zn 阳极在 1000 个循环中实现了 99.6% 的高库伦比效率.
雕刻的 Zn 阳极在 10 mA cm-2.2 的高电流密度下表现出超过 400 小时的长期稳定性.
金属酸盐添加剂加速了3D人工接口层的合成,并调节了Zn沉积.

结论:

有机带蚀刻方法提供了一种有效的策略,用于在Zn阳极上为AZIBs开发现场保护层.
独特的梯形结构和保护层的性特性显著提高了Zn阳极的可逆性,并抑制了树突的生长.
这种方法为Zn金属阳极的表面修改提供了新的视角,提高了电池的性能和寿命.

关键词:

水性Zn离子电池的使用方法人工保护层的人工保护层.没有树的阳极无树.在现场发生化学反应.有机带蚀刻有机带蚀刻

更多相关视频

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

Ultrathin Porated Elastic Hydrogels As a Biomimetic Basement Membrane for Dual Cell Culture

Ultrathin Porated Elastic Hydrogels As a Biomimetic Basement Membrane for Dual Cell Culture

Published on: December 26, 2017

相关概念视频

Extraction: Advanced Methods

Extraction: Advanced Methods

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...

EDTA: Auxiliary Complexing Reagents

EDTA: Auxiliary Complexing Reagents

EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...

Corrosion of Reinforcement

Corrosion of Reinforcement

The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...