相关实验视频
Updated: Jun 26, 2025

06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.3K
调节"尖端效应"和Zn2+沉积动力学,通过在现场构建低压歇斯底里和无树的Zn阳极的低压歇斯底里间相
Zongzhi Tao1, Xiaoyue He1, Lai Yu1
1Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Small methods
|May 17, 2024
概括
研究人员开发了一种保护性ZnO纳米阵列涂层,用于水性离子电池中的阳极. 这种涂层防止了树的生长,并增强了离子扩散,使得稳定的高电流性能和延长了电池寿命.
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:
- 水性离子电池 (AZIB) 对储能充满希望.
- 阳极遭受了树突形成和腐蚀,限制了性能.
- 高电流密度对当前的AZIB技术来说是一个挑战.
研究的目的:
- 开发AZIB中阳极的保护性介相.
- 为了提高高电流密度的阳极的稳定性和性能.
- 为了减轻树状岩的生长,并增强Zn2+离子运输.
主要方法:
- 在Zn薄膜 (Zn@ZnO NAs) 上在现场形成均的ZnO纳米阵列 (NAs).
- 使用 ZnO NAs 作为保护层来调节 Zn 沉积.
- 研究Zn@ZnO NAs在AZIB和全细胞中的电化学性能.
主要成果:
- Zn@ZnO NAs具有50.8mV的低电压歇斯底里.
- 在5mA cm-2.0下达到1200小时的卓越寿命.
- 在0.5A g-1.0的500个循环后,Zn@ZnO NAsidiyeidiyeα-MnO2全细胞显示了216.69 mAh g-1.
结论:
- ZnO NAs 介相有效抑制 Zn 树突,并增强离子动力学.
- Zn@ZnO NAs在高电流密度下表现出卓越的电化学性能和稳定性.
- 这种方法为设计高性能AZIB的先进阳极系统提供了洞察力.
相关概念视频
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
Electrodeposition
626
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...
626

