REAL SPACE MAPPING OF OXYGEN VACANCY DIFFUSION AND ELECTROCHEMICAL TRANSFORMATIONS BY HYSTERETIC CURRENT REVERSAL CURVE MEASUREMENTS
    1.
    发明申请
    REAL SPACE MAPPING OF OXYGEN VACANCY DIFFUSION AND ELECTROCHEMICAL TRANSFORMATIONS BY HYSTERETIC CURRENT REVERSAL CURVE MEASUREMENTS 有权
    氧气电流扩散和电化学变换的实际空间映射由HYSTERETIC CURRENT REVERSAL CURVE MEASUREMENTS

    公开(公告)号:US20140041085A1

    公开(公告)日:2014-02-06

    申请号:US13566327

    申请日:2012-08-03

    IPC分类号: G01Q60/44

    CPC分类号: G01Q60/30

    摘要: An excitation voltage biases an ionic conducting material sample over a nanoscale grid. The bias sweeps a modulated voltage with increasing maximal amplitudes. A current response is measured at grid locations. Current response reversal curves are mapped over maximal amplitudes of the bias cycles. Reversal curves are averaged over the grid for each bias cycle and mapped over maximal bias amplitudes for each bias cycle. Average reversal curve areas are mapped over maximal amplitudes of the bias cycles. Thresholds are determined for onset and ending of electrochemical activity. A predetermined number of bias sweeps may vary in frequency where each sweep has a constant number of cycles and reversal response curves may indicate ionic diffusion kinetics.

    摘要翻译: 激发电压在纳米尺度网格上偏置离子导电材料样品。 偏置以最大幅度增加扫描调制电压。 当前的响应是在网格位置测量的。 电流响应反转曲线映射到偏置周期的最大幅度。 对于每个偏置周期,反转曲线在电网上进行平均,并映射到每个偏置周期的最大偏置幅度。 平均反转曲线区域映射到偏置周期的最大幅度。 确定电化学活性的起始和结束的阈值。 预定数量的偏置扫描可以在频率上变化,其中每个扫描具有恒定的循环次数,反转响应曲线可以指示离子扩散动力学。

    REAL SPACE MAPPING OF IONIC DIFFUSION AND ELECTROCHEMICAL ACTIVITY IN ENERGY STORAGE AND CONVERSION MATERIALS
    2.
    发明申请
    REAL SPACE MAPPING OF IONIC DIFFUSION AND ELECTROCHEMICAL ACTIVITY IN ENERGY STORAGE AND CONVERSION MATERIALS 有权
    能量储存和转换材料中离子扩散和电化学活性的实际空间映射

    公开(公告)号:US20120125783A1

    公开(公告)日:2012-05-24

    申请号:US13291480

    申请日:2011-11-08

    CPC分类号: G01Q60/60 G01Q60/02 G01Q60/30

    摘要: A method and system for probing mobile ion diffusivity and electrochemical reactivity on a nanometer length scale of a free electrochemically active surface includes a control module that biases the surface of the material. An electrical excitation signal is applied to the material and induces the movement of mobile ions. An SPM probe in contact with the surface of the material detects the displacement of mobile ions at the surface of the material. A detector measures an electromechanical strain response at the surface of the material based on the movement and reactions of the mobile ions. The use of an SPM tip to detect local deformations allows highly reproducible measurements in an ambient environment without visible changes in surface structure. The measurements illustrate effective spatial resolution comparable with defect spacing and well below characteristic grain sizes of the material.

    摘要翻译: 用于探测自由电化学活性表面的纳米尺度上的移动离子扩散率和电化学反应性的方法和系统包括偏压材料表面的控制模块。 电激励信号被施加到材料并引起移动离子的移动。 与材料表面接触的SPM探针检测到材料表面上的移动离子的位移。 检测器基于移动离子的运动和反应来测量材料表面处的机电应变响应。 使用SPM尖端来检测局部变形允许在周围环境中进行高度可重复的测量,而没有表面结构的可见变化。 测量结果说明了有效的空间分辨率与缺陷间距相当,远远低于材料的特征晶粒尺寸。

    Real space mapping of oxygen vacancy diffusion and electrochemical transformations by hysteretic current reversal curve measurements
    3.
    发明授权
    Real space mapping of oxygen vacancy diffusion and electrochemical transformations by hysteretic current reversal curve measurements 有权
    通过滞后电流反转曲线测量的氧空位扩散和电化学转换的实际空间映射

    公开(公告)号:US08752211B2

    公开(公告)日:2014-06-10

    申请号:US13566327

    申请日:2012-08-03

    IPC分类号: G01Q60/44

    CPC分类号: G01Q60/30

    摘要: An excitation voltage biases an ionic conducting material sample over a nanoscale grid. The bias sweeps a modulated voltage with increasing maximal amplitudes. A current response is measured at grid locations. Current response reversal curves are mapped over maximal amplitudes of the bias cycles. Reversal curves are averaged over the grid for each bias cycle and mapped over maximal bias amplitudes for each bias cycle. Average reversal curve areas are mapped over maximal amplitudes of the bias cycles. Thresholds are determined for onset and ending of electrochemical activity. A predetermined number of bias sweeps may vary in frequency where each sweep has a constant number of cycles and reversal response curves may indicate ionic diffusion kinetics.

    摘要翻译: 激发电压在纳米尺度网格上偏置离子导电材料样品。 偏置以最大幅度增加扫描调制电压。 当前的响应是在网格位置测量的。 电流响应反转曲线映射到偏置周期的最大幅度。 对于每个偏置周期,反转曲线在电网上进行平均,并映射到每个偏置周期的最大偏移幅度。 平均反转曲线区域映射到偏置周期的最大幅度。 确定电化学活性的起始和结束的阈值。 预定数量的偏置扫描可以在频率上变化,其中每个扫描具有恒定的循环次数,反转响应曲线可以指示离子扩散动力学。

    Real space mapping of ionic diffusion and electrochemical activity in energy storage and conversion materials
    4.
    发明授权
    Real space mapping of ionic diffusion and electrochemical activity in energy storage and conversion materials 有权
    能量储存和转换材料中离子扩散和电化学活性的实际空间映射

    公开(公告)号:US08719961B2

    公开(公告)日:2014-05-06

    申请号:US13291480

    申请日:2011-11-08

    IPC分类号: G01Q60/60

    CPC分类号: G01Q60/60 G01Q60/02 G01Q60/30

    摘要: A method and system for probing mobile ion diffusivity and electrochemical reactivity on a nanometer length scale of a free electrochemically active surface includes a control module that biases the surface of the material. An electrical excitation signal is applied to the material and induces the movement of mobile ions. An SPM probe in contact with the surface of the material detects the displacement of mobile ions at the surface of the material. A detector measures an electromechanical strain response at the surface of the material based on the movement and reactions of the mobile ions. The use of an SPM tip to detect local deformations allows highly reproducible measurements in an ambient environment without visible changes in surface structure. The measurements illustrate effective spatial resolution comparable with defect spacing and well below characteristic grain sizes of the material.

    摘要翻译: 用于探测自由电化学活性表面的纳米尺度上的移动离子扩散率和电化学反应性的方法和系统包括偏压材料表面的控制模块。 电激励信号被施加到材料并引起移动离子的移动。 与材料表面接触的SPM探针检测到材料表面上的移动离子的位移。 检测器基于移动离子的运动和反应来测量材料表面处的机电应变响应。 使用SPM尖端来检测局部变形允许在周围环境中进行高度可重复的测量,而没有表面结构的可见变化。 测量结果说明了有效的空间分辨率与缺陷间距相当,远远低于材料的特征晶粒尺寸。