A fluorescent tracing method and aqueous zinc ion battery

By introducing TPE-based fluorescent tracers into the electrolyte solution of aqueous zinc-ion batteries, the problem of real-time monitoring of the dynamic evolution of the zinc anode interface in existing technologies has been solved, enabling visualized monitoring of zinc element distribution and dynamic changes, and improving the cycle stability and safety of the zinc anode.

CN121097236BActive Publication Date: 2026-03-17XIAMEN UNIV OF TECH
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Patent Information

Application Number
CN202511623002.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-11-07
Publication Date
2026-03-17
Estimated Expiration
2045-11-07

AI Technical Summary

Technical Problem

Existing technologies make it difficult to monitor the dynamic evolution of the zinc anode interface in aqueous zinc-ion batteries in real time and with visualization, resulting in a lack of in-depth understanding of the behavior of the zinc anode interface and limiting the accurate judgment of failure mechanisms and the optimization of interface control strategies.

Method used

By employing a fluorescence tracing method, a TPE-based fluorescent tracer is introduced into the electrolyte solution, and its fluorescence signal is used to observe the migration, deposition, and stripping behavior of zinc ions during battery cycling, thus providing a direct view of the distribution and dynamic changes of zinc.

Benefits of technology

It enables in-situ, non-destructive, and real-time visual monitoring of the zinc anode interface reaction process, providing intuitive visual evidence of the electrochemical mechanism of zinc-ion batteries, early identification of battery degradation and optimization of interface regulation strategies, and improving the cycle stability and safety of zinc anodes.

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Abstract

The application provides a fluorescent tracing method and an aqueous zinc ion battery, wherein the fluorescent tracing method comprises the following steps: firstly, a fluorescent electrolyte solution is prepared, the fluorescent electrolyte solution contains a TPE-based fluorescent tracer, the TPE-based fluorescent tracer is a TPE derivative formed by introducing different functional groups into a TPE molecular skeleton, and the TPE derivative comprises an olefin group and a polar group; and secondly, the aqueous zinc ion battery containing the fluorescent electrolyte solution is subjected to a constant current deposition stripping mode to perform long-term cycle testing on the battery. In the long-term cycle testing of the battery, the tetraphenyl ethylene derivative with the aggregation-induced emission characteristic is introduced, the zinc ion migration, deposition and stripping behavior can be directly observed by means of the fluorescent signal of the tetraphenyl ethylene derivative, and the zinc element distribution and dynamic change are directly presented. This breaks through the limitation that the traditional method is difficult to directly capture the zinc electrode interface reaction, and provides intuitive visual evidence for understanding the electrochemical mechanism of the zinc ion battery.
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