相关实验视频
Updated: Jul 9, 2025
06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.4K
通过探索可充电离子电池的极地面-丰富的2D ZnO接口层,实现了无树的阳极
Xueqing Hu1, Joanna Borowiec2, Yijia Zhu1
1Institute for Materials Discovery (IMD), University College London, London, WC1E 7JE, UK.
Small (Weinheim an der Bergstrasse, Germany)
|December 6, 2023
概括
离子电池 (ZIB) 中的阳极遭受了树的生长. 涂上氧化纳米片的阳极显著提高了电池的性能和容量,通过改善离子运输和稳定性.
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
- 纳米技术 纳米技术
背景情况:
- 金属阳极对于离子电池 (ZIB) 是有前途的.
- 在水性电解质中的阳极上的树生长会导致容量减弱.
- 诸如进化和腐蚀等副作用会阻碍ZIB的性能.
研究的目的:
- 在阳极上开发一个人造层,以抑制树突的生长.
- 为了提高ZIB的电化学性能和循环稳定性.
- 研究氧化纳米结构在改善阳极性能方面的作用.
主要方法:
- 在 Zn 阳极上直接生长 1D 氧化纳米棒 (ZnO NR) 和 2D ZnO 纳米片 (ZnO NF).
- 制造有 ZnO 涂层的 Zn 阳极.
- 用V2O5阴极在全ZIB电池中涂层阳极的电化学评估.
主要成果:
- 涂有 ZnO NFs 的 Zn 阳极表现出 348 mAh g-1 的容量,性能优于 ZnO NR (250 mAh g-1) 和原始 Zn (160 mAh g-1).
- O涂层提供了化学和热稳定性,为高效的电子传输提供了欧姆接触.
- 水友性ZnO NF增强了Zn2+溶解,改善了电荷储存.
结论:
- 用ZnO纳米结构,特别是纳米片涂覆阳极,有效地抑制了树的生长.
- ZnO NF通过改善离子运输,稳定性和 Zn2+ 溶解来提高 ZIB 的性能.
- 这种方法为开发高性能和耐用的离子电池提供了可行的策略.
相关概念视频
03:02Standard Electrode Potentials
44.0K
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...
44.0K
01:08Electrodeposition
639
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...
639