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解锁阳极的高电流性能:协同化和化碳封装以提高的扩散性

Arief Muhammad Firdaus¹, Naufal Hanif Hawari¹, Celfi Gustine Adios¹

¹Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung, 40132, Indonesia.

Chemistry, an Asian journal

|February 28, 2024

概括

用添加的纳米颗粒涂上添加的碳,显著提高离子电池阳极性能. 这种增强提高了离子的移动性,使先进电池能够稳定,高速储能.

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
纳米技术纳米技术

背景情况:

阳极为离子电池 (LIB) 提供了高的理论容量.
的低电荷移动性阻碍了其在高电流应用中的使用.
开发稳定,高性能阳极对于下一代能源储存至关重要.

研究的目的:

为了提高离子扩散率和稳定性,阳极用于高率LIBs.
调查兴奋剂和兴奋碳封装对阳极性能的联合影响.
探索有效的策略,以改善LIBs中的阳极性能.

主要方法:

用酸粉碎和化以制造添加的纳米粒子.
用表面活性剂辅助的烯聚合,然后进行碳化,以化碳封装.
在LIB半电池和全电池中P-Si@N-C阳极的电化学表征.

主要成果:

与未经处理的相比,P-Si@N-C阳极的Li+扩散率增加了多达十倍.
实现了特殊的阳极稳定性,在4000mAg-1的高电流速率下保持87%的容量.
一个带有 LiFePO4 阴极的全电池在 1C 的 100 个循环后显示出 94% 的容量保留.

结论:

兴奋剂和兴奋碳封装的协同效应有效地提高了阳极的性能.
这种方法为开发高级离子电池的高速,稳定的基阳极提供了可行的策略.
增强的Li+扩散性是释放阳极在苛刻应用中的潜力的关键.

关键词:

兴奋剂的使用兴奋剂的使用离子扩散性离子扩散性这是一个Si阳极.用剂合碳的碳.是一种的物质.

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P-N junction

P-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...