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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Generating Huge Magnetocurrent by Using Spin-Dependent Dehydrogenation Based on Electrochemical System
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Generating Huge Magnetocurrent by Using Spin-Dependent Dehydrogenation Based on Electrochemical System

机译：通过基于电化学系统的旋转依赖性脱氢产生巨大的磁电流

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摘要

Systems featuring large magnetocurrent (MC) at room temperature are attractive owing to their potential for application in magnetic field sensing. Usually, the magnetic materials are exploited to achieve large MC effect. Here, we report a huge MC of up to 150% in a nonmagnetic system based on the electrochemical oxidation of hydrazine at room temperature. The huge MC is ascribed to the spin-dependent N-H bond cleavage and reformation through dehydrogenation during the oxidation of hydrazine. Specifically, the N-H bond cleavage generates singlet radical pairs. An external magnetic field can accelerate the spin evolution from singlet to triplet in spin-correlated radical pairs by perturbing spin precessions. Increasing the amount of triplet radical pairs can largely reduce the N-H bond recovery and significantly enhance the oxidation current of hydrazine. As a consequence, the spin-dependent bond formation through dehydrogenation can provide a new approach to generate huge MC in electrochemical cells.
机译：在室温下具有大磁电流（MC）的系统由于它们在磁场传感中的应用而具有吸引力。通常，利用磁性材料以实现大的MC效应。在这里，我们在基于室温下的肼的电化学氧化，在非磁性系统中报告了高达150％的巨大MC。巨大的MC通过在肼氧化过程中通过脱氢来归因于旋转依赖性N-H键切割和改性。具体地，N-H键裂解产生单态自由基对。外部磁场可以通过扰动旋转前沿通过旋转相关的自由基对中的单线旋转进化。增加三重态自由基对的量可以在很大程度上降低N-H键回收，并显着提高肼的氧化电流。结果，通过脱氢旋转依赖性键形成可以提供一种在电化学细胞中产生巨大MC的新方法。

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  • 作者

    Pan Haiping; Xiao Xin; Hu Bin; Shen Yan; Wang Mingkui;

  • 作者单位

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect Sch Opt &

    Elect Informat Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect Sch Opt &

    Elect Informat Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect Sch Opt &

    Elect Informat Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect Sch Opt &

    Elect Informat Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect Sch Opt &

    Elect Informat Wuhan 430074 Hubei Peoples R China;

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  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
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