基于二氧化的阳极的批量规模合成和间接增强稳定性,以实现高性能离子电池
Lin Sun1,2, Xiaowen Jiang1, Yang Liu1
1Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
ACS applied materials & interfaces
|August 3, 2024
概括
研究人员使用碳纳米管 (CNT) 为高能离子电池 (LIB) 开发了一种新的氧化 (SiO) 阳极材料. 这种先进的阳极材料证明了下一代储能解决方案的稳定性和效率的提高.
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:
- 氧化 (SiO) 是高能量密度离子电池 (LIB) 的一个有前途的阳极材料.
- 商业化受到导电性差,初始库伦比克效率 (ICE) 低,不稳定的固体电解质接口 (SEI) 的限制.
- 具有增强电化学性能的经济高效SiO阳极对于先进的LIBs至关重要.
研究的目的:
- 开发一个具有更好的电化学性能,具有成本效益的SiO阳极.
- 为了应对SiO阳极中导电性差,低ICE和不稳定的SEI的挑战.
- 为先进的离子电池应用创造一种新的复合材料.
主要方法:
- 合成了一种T-SiO/C/CNTs复合物,使用APTES作为源和CNTs作为添加剂.
- 雇员是一个雇员.
- 分子组装与受控热解相结合.
- 在温和条件下的策略用于in situ碳涂层和N doping.
- 使用了T-SiO@C/CNTs电极的预化.
主要成果:
- T-SiO@C/CNTs复合材料具有在位碳涂层和CNTs,以提高导电性和稳定性.
- 在前化后获得了91.6%的初始库伦比克效率 (ICE).
- 经过证明的高特异性容量:622mAhg-1在1Ag-1的400个循环后,475.8mAhg-1在800个循环后.
- 使用NCM811阴极进行全细胞测试证实了该材料的潜力.
结论:
- 开发的T-SiO@C/CNTs复合物有效地克服了传统SiO阳极的局限性.
- 这种材料为下一代LIB中的高性能,具有成本效益的阳极提供了有前途的解决方案.
- 提供了对LIBs中先进阳极材料的合理设计策略的见解.
相关概念视频
Batteries and Fuel Cells
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...
The 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...


