An x-ray absorption spectroscopy system and method for electrochemical reactions under high current conditions

By optimizing the electrolytic cell structure and simultaneously controlling the acquisition of electrochemical reaction and X-ray absorption spectroscopy data, the problem that existing systems cannot effectively characterize the evolution of catalyst structure under high current conditions has been solved, achieving in-situ characterization with high signal-to-noise ratio and promoting the development of high-efficiency catalytic materials.

CN121347561BActive Publication Date: 2026-07-21INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI
Filing Date
2025-10-30
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing X-ray absorption spectroscopy characterization systems cannot work effectively under high current conditions and cannot truly reflect the structural evolution and failure mechanism of catalysts under industrial-grade high current, especially in terms of electrolytic cell design, window materials, and bubble management.

Method used

An X-ray absorption spectroscopy characterization system was designed, comprising an industrial control computer, a high-current electrochemical workstation, an X-ray absorption spectroscopy electronics system, an operating electrolytic cell, an electrolytic cell mounting bracket, and an electrolyte control system. By optimizing the electrolytic cell structure and synchronously controlling the electrochemical reaction and X-ray absorption spectroscopy data acquisition, in-situ characterization with a high signal-to-noise ratio is achieved.

Benefits of technology

It can capture the microstructural changes of catalysts in situ and in real time under high current conditions, reveal their activity, stability and failure mechanism, and promote the development and application of high-efficiency catalytic materials.

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Abstract

The application provides an X-ray absorption spectroscopy characterization system and method for electrochemical reaction under a large current condition, wherein a large current electrochemical workstation provides a current density of no less than 10 A / cm2 for a working electrolytic cell; the working electrolytic cell comprises a working electrode chamber and a counter electrode chamber arranged oppositely, and an ion exchange membrane arranged between the working electrode chamber and the counter electrode chamber; the working electrode chamber comprises a conductive plate made of a metal sheet, a working electrode loaded with a catalyst is arranged on the side of the conductive plate facing the ion exchange membrane, and a hollow flow channel is arranged in the central region of the conductive plate; the working electrode chamber further comprises an X-ray window sheet for transmitting incident X-rays and fluorescent X-rays generated by the catalyst; the counter electrode chamber is provided with an electrolyte flow channel, and a counter electrode is arranged on the side of the counter electrode chamber facing the ion exchange membrane; and an electrolyte control system is used to realize the circulating flow of the electrolyte. The application can realize in-situ, real-time and high signal-to-noise ratio characterization of the microstructure of a catalyst under a high current density, strong bubble effect and high X-ray absorption condition.
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