4 results about "Scanning electrochemical microscopy" patented technology

The invention discloses a micrometer standard sample plate for a scanning electrochemical microscope, a matched clamping and connecting device and a length calibration method, and belongs to the technical field of precise instrument calibration. The sample plate comprises a monocrystalline silicon substrate, a micron-sized standard pattern structure formed on the surface of the monocrystalline silicon substrate, and a conductive film layer covering the surface of the micron-sized standard pattern structure. And a mounting table matched with the clamping connecting device is arranged in the center of the upper surface of the base. The length calibration method comprises the following steps: installing and fixing the micrometer standard sample plate assembly on a sample table of the scanning electrochemical microscope, and carrying out electric connection conduction; the X direction and the Y direction are calibrated; and correcting the length measurement parameters of the scanning electrochemical microscope. The micron standard sample plate provided by the invention has good conductivity and stable geometrical morphology. The matched clamping and connecting device can realize rapid and accurate positioning of the standard sample plate on the scanning electrochemical microscope sample table. The calibration method ensures the accuracy and traceability of the measurement value of the equipment.

This invention relates to the field of electrochemical technology, and more particularly to a method for testing the reaction kinetics at the Bi electrode interface in Li-Bi batteries. The dual-probe measurement system constructed in this invention works collaboratively on a precise three-dimensional positioning platform of a shared scanning electrochemical microscope. One probe maps the electrochemical activity distribution on the electrode surface, visually reflecting the spatial location of low-activity phases, while the other Hg probe simultaneously records the Li content in the corresponding region. + Concentration or diffusion coefficient. This "functionally complementary, spatially synchronized" measurement mode can integrate observed electrochemical data, interfacial electrochemical activity, and Li... + The migration dynamics are directly related, thus providing experimental evidence for revealing the true rate-limiting steps in the phase transition process, enabling a more comprehensive and three-dimensional analysis of complex electrode processes, and making up for the limitations of single signal measurement.

The present application relates to the technical field of aqueous ion battery, and particularly relates to a method for testing electrochemical activity uniformity of negative electrode material of aqueous ion battery. The method comprises the following steps: preparing a sample pool, wherein the sample pool comprises a substrate layer and a negative electrode material layer to be tested on the substrate; placing the sample pool in a photo-assisted scanning electrochemical microscope system, and performing leveling, wherein the photo-assisted scanning electrochemical microscope system comprises a scanning electrochemical microscope system and a side-viewing CCD camera; and calculating the electrochemical activity uniformity of the surface of the negative electrode material to be tested. The method has the advantages of high speed and high precision by using the photo-assisted scanning electrochemical microscope system for leveling. The method does not depend on the assumption of the electrochemical activity uniformity of the surface to be tested in the actual operation of the traditional SECM system. The leveling time is less than 10 minutes each time, which is much less than 30 minutes required by the ordinary approximation curve leveling method. Therefore, the electrochemical property detection method in the present application is suitable for large-scale electrode screening, and has good application prospect.

This invention belongs to the field of bioelectrochemical detection and cell interface characterization technology, specifically relating to a real-time dynamic in-situ detection system and method for cell micro-region impedance based on scanning electrochemical microscopy. The system includes: a conductive substrate electrode, a SECM probe, a cell culture module, a multi-channel electrochemical workstation, and a control system and imaging software. By precisely scanning near the cell surface using the SECM probe, impedance response signals are acquired simultaneously with the application of alternating excitation signals, enabling real-time dynamic in-situ detection of impedance in micro-regions on the surface of living cells, achieving sub-micron spatial resolution. This invention integrates impedance detection and electrochemical detection functions, enabling label-free, non-invasive continuous monitoring during cell culture, providing a novel high-resolution, multi-parameter synchronous acquisition analytical platform for cell physiological state research, drug screening, and pathological mechanism analysis.