UsingIn-situSynchrotron/Neutron Techniques to Study the Failure Mechanisms of MnO2in Zinc Batteries and Improvement of Metal Ions/Crystal Water Co-Intercalation
DescriptionZn/MnO2battery is very promising in terms of high working voltage, high specific capacity, safety and non-toxicity. However, the failure mechanism of MnO2remains under controversy, since traditional characterization techniques cannot obtain certain key information, especially, ion insertion positioning, migration path, spatial distribution and phase transition. Synchrotron X-rays owns advantages of high energy and high photon flux, which allows for deeper penetration depth and an ultrafast data collection for time-resolvedin-situmeasurements. Meanwhile, neutron diffraction technique is very sensitive to light elements. Therefore, the advanced synchrotron X-ray combined with neutron diffraction holds a great potential for the mechanism study. This project intends to combine neutron diffraction and synchrotron techniques to investigate thein-situcharge/discharge processes of different crystal types of MnO2and corresponding ions-solvation/ crystal water interaction behavior, aiming to reveal failure mechanism of MnO2, screen the most promising crystal types MnO2and the vital role of ions-solvation/crystal water coactions in enhancing performance, respectively. The accomplishment of project will provide new insight into the relevant mechanism and enlighten to develop high-performance MnO2cathodes materials for industrial and realistic application.
|Effective start/end date||1/05/22 → …|