凝视角度沉积的纳米结构层对抗树岩形成和侧面反应在水性离子电池阳极中
Salim Hussain1, S M Sayem1, Assem Basurrah1,2
1School of Physical Sciences, University of Arkansas at Little Rock, Little Rock, AR 72204, USA.
Nanomaterials (Basel, Switzerland)
|June 25, 2025
概括
在阳极上制造的纳米结构显著提高了水性离子电池的性能. 这种方法增强了循环稳定性,并通过防止树突形成和副作用来减少过量的潜能.
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) 提供可持续的储能,但遭受阳极降解.
- 树岩的形成,的进化和腐蚀的瘟疫裸露的阳极,限制了AZIB的性能和寿命.
研究的目的:
- 在阳极上开发一层保护层,以减轻AZIB中的降解问题.
- 调查通过视角沉积 (GLAD) 制造的纳米结构 (TeNS) 的有效性,以提高AZIB的性能.
主要方法:
- 使用GLAD在阳极上制造纳米结构 (TeNS),其沉积时间可变 (5,10,30分钟).
- 对TeNS形态,结晶性,组成和可湿性的全面分析.
- 用TeNS修饰的阳极评估对称细胞的循环稳定性,核化过度潜力和面积容量.
主要成果:
- TeNS充当水友性位点和保护层,促进均的沉积和抑制树突.
- Te@Zn_10分钟的阳极表现出卓越的循环稳定性 (350小时),低核化过电位 (10.65 mV在1 mA/cm2),以及良好的面积容量 (0.5 mAh/cm2).
- 最佳的TeNS结构增强了涂/脱落,并最大限度地减少了有害的副作用.
结论:
- 由GLAD制造的TeNS有效地解决了AZIB中的裸阳极问题.
- TeNS保护层显著提高了循环稳定性和电化学性能.
- 这种方法为开发高性能和耐用的水性离子电池提供了一个有希望的战略.
相关概念视频
01:11P-N junction
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
01:30The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...