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Actual three-dimensional mapping of ion diffusion and the electrochemistry activity in the energy storage material and the energy conversion material
Actual three-dimensional mapping of ion diffusion and the electrochemistry activity in the energy storage material and the energy conversion material
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机译：储能材料和能量转换材料中离子扩散和电化学活性的实际三维映射
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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.
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