In situ and ex situ approaches for molecular scale understanding of electrochemical interfaces

IF 1.5 4区 物理与天体物理 Q3 PHYSICS, APPLIED
Yasuyuki Yokota
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引用次数: 0

Abstract

In recent years, electrochemical devices have become increasingly important, and atomic- and molecular-scale understanding of the electronic and ionic transfers and chemical reactions at the electrode/electrolyte interface is required. While electrochemical scanning tunneling microscopy (EC-STM) has long enabled atomic-resolution observations in real space, it is difficult to identify reaction products and evaluate their electronic states at the interface in the electrochemical environment because of various limitations imposed by the presence of electrolyte solutions in the measurement. In this perspective review, we present our recent progresses with in situ (EC-STM combined with near-field spectroscopy) and ex situ (precise measurements in ultrahigh vacuum after electrode emersion) experiments for elucidating the microscopic properties of the electrochemical interfaces. Current issues and future perspective of both techniques are also discussed in detail.
以分子尺度理解电化学界面的原位和非原位方法
近年来,电化学装置变得越来越重要,需要从原子和分子尺度了解电极/电解质界面上的电子和离子转移及化学反应。虽然电化学扫描隧道显微镜(EC-STM)早已实现了真实空间的原子分辨率观测,但由于测量过程中电解质溶液的存在所带来的各种限制,很难在电化学环境中识别反应产物并评估其在界面上的电子状态。在这篇综述中,我们介绍了我们在原位(EC-STM 与近场光谱相结合)和原位(电极浸入后在超高真空中进行精确测量)实验方面的最新进展,以阐明电化学界面的微观特性。此外,还详细讨论了这两种技术的当前问题和未来前景。
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来源期刊
Japanese Journal of Applied Physics
Japanese Journal of Applied Physics 物理-物理:应用
CiteScore
3.00
自引率
26.70%
发文量
818
审稿时长
3.5 months
期刊介绍: The Japanese Journal of Applied Physics (JJAP) is an international journal for the advancement and dissemination of knowledge in all fields of applied physics. JJAP is a sister journal of the Applied Physics Express (APEX) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP). JJAP publishes articles that significantly contribute to the advancements in the applications of physical principles as well as in the understanding of physics in view of particular applications in mind. Subjects covered by JJAP include the following fields: • Semiconductors, dielectrics, and organic materials • Photonics, quantum electronics, optics, and spectroscopy • Spintronics, superconductivity, and strongly correlated materials • Device physics including quantum information processing • Physics-based circuits and systems • Nanoscale science and technology • Crystal growth, surfaces, interfaces, thin films, and bulk materials • Plasmas, applied atomic and molecular physics, and applied nuclear physics • Device processing, fabrication and measurement technologies, and instrumentation • Cross-disciplinary areas such as bioelectronics/photonics, biosensing, environmental/energy technologies, and MEMS
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