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An on-chip electrical transport spectroscopy approach for in situ monitoring electrochemical interfaces

Author

Listed:
  • Mengning Ding

    (University of California
    California Nanosystems Institute, University of California)

  • Qiyuan He

    (University of California)

  • Gongming Wang

    (California Nanosystems Institute, University of California
    University of California)

  • Hung-Chieh Cheng

    (University of California)

  • Yu Huang

    (University of California
    California Nanosystems Institute, University of California)

  • Xiangfeng Duan

    (California Nanosystems Institute, University of California
    University of California)

Abstract

In situ monitoring electrochemical interfaces is crucial for fundamental understanding and continued optimization of electrocatalysts. Conventional spectroscopic techniques are generally difficult to implement for in situ electrochemical studies. Here we report an on-chip electrical transport spectroscopy approach for directly probing the electrochemical surfaces of metallic nanocatalysts in action. With a four-electrode device configuration, we demonstrate that the electrical properties of ultrafine platinum nanowires are highly sensitive and selective to the electrochemical surface states, enabling a nanoelectronic signalling pathway that reveals electrochemical interface information during in-device cyclic voltammetry. Our results not only show a high degree of consistency with generally accepted conclusions in platinum electrochemistry but also offer important insights on various practically important electrochemical reactions. This study defines a nanoelectronic strategy for in situ electrochemical surface studies with high surface sensitivity and surface specificity.

Suggested Citation

  • Mengning Ding & Qiyuan He & Gongming Wang & Hung-Chieh Cheng & Yu Huang & Xiangfeng Duan, 2015. "An on-chip electrical transport spectroscopy approach for in situ monitoring electrochemical interfaces," Nature Communications, Nature, vol. 6(1), pages 1-9, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8867
    DOI: 10.1038/ncomms8867
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    Cited by:

    1. Hang Xia & Xiaoru Sang & Zhiwen Shu & Zude Shi & Zefen Li & Shasha Guo & Xiuyun An & Caitian Gao & Fucai Liu & Huigao Duan & Zheng Liu & Yongmin He, 2023. "The practice of reaction window in an electrocatalytic on-chip microcell," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Zhangyan Mu & Na Han & Dan Xu & Bailin Tian & Fangyuan Wang & Yiqi Wang & Yamei Sun & Cheng Liu & Panke Zhang & Xuejun Wu & Yanguang Li & Mengning Ding, 2022. "Critical role of hydrogen sorption kinetics in electrocatalytic CO2 reduction revealed by on-chip in situ transport investigations," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    3. Yanghang Pan & Xinzhu Wang & Weiyang Zhang & Lingyu Tang & Zhangyan Mu & Cheng Liu & Bailin Tian & Muchun Fei & Yamei Sun & Huanhuan Su & Libo Gao & Peng Wang & Xiangfeng Duan & Jing Ma & Mengning Din, 2022. "Boosting the performance of single-atom catalysts via external electric field polarization," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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