Advanced electrode design enables homogeneous electric field distribution for metal deposition studies via in situ liquid cell TEM

IF 4.6 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES iScience Pub Date : 2024-10-09 DOI:10.1016/j.isci.2024.111119

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Abstract

In situ liquid-phase electrochemical transmission electron microscopy (ec-TEM) as a valuable technique has been widely used in studying metal deposition in battery materials. While real-time observations of metallic nucleation, growth, and dendrite formation using microscale ec-TEM liquid cells are investigated, existing cells exhibit nonuniform electric field distribution along electrodes, limiting measurement reliability and quantitative analysis. Here, we introduce an advanced electrode design for ec-TEM chips, ensuring a uniform electric field for precise characterization of early-stage metal deposition closer to practical battery conditions. Both simulation and experimental investigations demonstrate that these specially designed ec-TEM chips facilitate quantitative electrochemical characterization combined with the in situ TEM technique in comparison with commercially available chips. We thus provide a significant progression toward optimizing the performance and reliability of quantitative in situ liquid-phase TEM measurements, essential for understanding and improving electrochemical systems.

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先进的电极设计实现了均匀的电场分布，可通过原位液池 TEM 进行金属沉积研究

原位液相电化学透射电子显微镜（ec-TEM）作为一种宝贵的技术，已被广泛用于研究电池材料中的金属沉积。虽然研究人员利用微尺度 ec-TEM 液体电池对金属成核、生长和枝晶形成进行了实时观测，但现有电池沿电极的电场分布不均匀，限制了测量可靠性和定量分析。在此，我们为 ec-TEM 芯片引入了一种先进的电极设计，可确保电场均匀，从而精确表征更接近实际电池条件的早期金属沉积。模拟和实验研究表明，与市售芯片相比，这些专门设计的 ec-TEM 芯片有助于结合原位 TEM 技术进行定量电化学表征。因此，我们在优化液相 TEM 原位定量测量的性能和可靠性方面取得了重大进展，这对理解和改进电化学系统至关重要。

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来源期刊

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

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