Quantitative analysis of atomic migration in lithium-ion conducting oxide solid electrolytes

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-07-31 DOI:10.1063/5.0219365

Xiangchen Hu, Hongsheng Shi, Xiaoyan Wu, Zeyu Wang, Yi Yu

引用次数: 0

Abstract

Direct observation of intrinsic atom migration inside bulk materials is crucial for understanding the ion-conducting property; however, microscopy experiments remain challenging. Here, intrinsic atom migration in bulk lithium-ion conductor La2/3–xLi3xTiO3 was investigated by using aberration-corrected transmission electron microscopy. The atomic migration was triggered by high-energy electron beam irradiation. Through quantitative analysis of high-angle annular dark-field image sequences and estimation of random errors using the 3σ criterion, the subtle contrast variation caused by single atom migration was extracted, in which the validity was further confirmed by image simulations. It provides a simple and feasible methodology for investigating the mechanism of atomic migration in bulk materials.

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锂离子导电氧化物固体电解质中原子迁移的定量分析

直接观察块体材料内部原子的本征迁移对于了解离子导电特性至关重要；然而，显微镜实验仍然具有挑战性。本文利用像差校正透射电子显微镜研究了块状锂离子导体 La2/3-xLi3xTiO3 中原子的本征迁移。原子迁移是由高能电子束辐照引发的。通过对高角度环形暗场图像序列进行定量分析，并利用 3σ 准则对随机误差进行估计，提取出了单原子迁移引起的微妙对比度变化，并通过图像模拟进一步证实了其有效性。它为研究块体材料中的原子迁移机制提供了一种简单可行的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.

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