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首页> 外文期刊>ACS applied materials & interfaces >Silicon Nanoparticles: Stability in Aqueous Slurries and the Optimization of the Oxide Layer Thickness for Optimal Electrochemical Performance
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Silicon Nanoparticles: Stability in Aqueous Slurries and the Optimization of the Oxide Layer Thickness for Optimal Electrochemical Performance

机译:硅纳米颗粒:含水浆料中的稳定性和氧化物层厚度的优化,用于最佳电化学性能

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摘要

In this study, silicon nanoparticles are oxidized in a controlled manner to obtain different thicknesses of SiO2 layers. Their stability in aqueous slurries as well as the effect of oxide layer thickness on the electrochemical performance of the silicon anodes is evaluated. Our results show that slightly increasing the oxide layer of silicon nanoparticles significantly improves the stability of the nanoparticles in aqueous slurries and does not compromise the initial electrochemical performance of the electrodes. A careful comparison of the rate and cycle performance between 400 degrees C treated Si nanoparticles and pristine Si nanoparticles shows that by treating the silicon nanoparticles in air for slightly increasing the oxide layer, improvement in both rate and cycle performance can be achieved.
机译:在该研究中,硅纳米颗粒以受控方式氧化,以获得不同厚度的SiO 2层。 评估它们在水性浆料中的稳定性以及氧化物层厚度对硅阳极电化学性能的影响。 我们的结果表明,略微增加硅纳米颗粒的氧化物层显着提高了纳米颗粒在水性浆质中的稳定性,并且不会损害电极的初始电化学性能。 仔细比较400摄氏度处理的Si纳米颗粒和原始Si纳米颗粒之间的速率和循环性能表明,通过在空气中处理硅纳米颗粒以略微增加氧化物层,可以实现速率和循环性能的改善。

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