基于的离子电池 (LIB) 活性碳支中的孔隙性的影响
Yun Jeong Choi1,2, Jeong Bin Choi1, Ji Sun Im1,3
1C1 Gas & Carbon Convergent Research, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea.
ACS omega
|June 12, 2023
概括
优化活性碳的多孔性是 (Si) 在电极中的沉积的关键. 控制的多孔性可提高Si分散和速率性能,但过度多孔性会降低电极稳定性,影响电化学特性.
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:
- 活性炭是用于储能应用中的 (Si) 沉积的常见支材料.
- 活性炭支的多孔性显著影响Si基电极的性能和性能.
- 了解孔隙性和电化学特性之间的关系对于开发先进的电池技术至关重要.
研究的目的:
- 研究活性炭支孔隙对沉积机制的影响.
- 评估不同孔径如何影响Si电极的电化学特性和稳定性.
- 为了确定最佳的多孔度范围,以提高电极性能.
主要方法:
- 制备具有不同孔径的活性炭支物.
- (Si) 沉积在准备好的活性炭支上.
- 由此产生的Si/活性炭电极的电化学表征.
- 对Si沉积机制和电极稳定性与支孔隙性相关的分析.
主要成果:
- 由于均的分散,活性碳的多孔性增加导致Si粒子尺寸更小.
- 较高的多孔性对电极的速度性能产生了积极的影响.
- 过高的孔隙性降低了Si和活性炭之间的接触面积,导致电极稳定性差.
- 对于最佳的电化学性能,需要透度的关键平衡.
结论:
- 活性炭的多孔性是控制Si沉积和电极稳定的关键参数.
- 控制的多孔性提高Si分散和速率能力,但必须保持平衡以保持电极完整性.
- 优化活性碳的多孔性对于改善用于储能应用的基于Si的电极的电化学特性至关重要.
相关概念视频
Porosity and Absorption of Aggregate
332
Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
332
MOS Capacitor
857
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
857


