An in-situ optical imaging device for lithium-oxygen battery interface

Abstract

The invention discloses a lithium-oxygen battery interface in-situ optical imaging device. The lithium-oxygen battery interface in-situ optical imaging device is characterized in that a lithium-oxygenbattery main body skeleton, electrode sealing and fixing structures, ventilating hole structures and sealing shells are included; the lithium-oxygen battery main body skeleton is used for constituting a reaction cell cavity; the electrode sealing and fixing structures comprise the positive electrode sealing and fixing structure and the negative electrode sealing and fixing structure, detachable positive and negative electrodes can be fixed and positioned through meter screws, and the positive electrode sealing and fixing structure and the negative electrode sealing and fixing structure are symmetrically arranged on the outer wall of the lithium-oxygen battery main body skeleton; the ventilating hole structures comprise the air feeding ventilating hole structure and the air discharging ventilating hole structure which are symmetrically arranged on the outer wall of the lithium-oxygen battery main body skeleton; and the sealing shells comprise the upper sealing shell and the lower sealing shell which are fixedly arranged at the end of the lithium-oxygen battery main body skeleton and provided with optical observing windows correspondingly.

Description

technical field [0001] The invention relates to an in-situ optical imaging device for a lithium-oxygen battery interface, and relates to the technical field of lithium batteries. Background technique [0002] The theoretical energy density of lithium-oxygen batteries is much higher than that of lithium-ion batteries. Without considering oxygen, the theoretical energy density of lithium-oxygen batteries is as high as 11430Wh kg -1 . As a new energy system, lithium-oxygen battery has attracted extensive attention of researchers. Generally speaking, lithium-oxygen batteries use metal lithium as the anode, solid electrolyte or liquid electrolyte as the electrolyte, and carbon materials and various new nanomaterials as the cathode. In non-aqueous systems, the ideal reaction for lithium-oxygen batteries is However, the current research on lithium-oxygen batteries is still in its infancy, and there are still many problems in its development process, such as: high charging overp...

AI Technical Summary

Problems solved by technology

In nonaqueous systems, the ideal reaction for lithium-oxygen batteries is However, the current research on lithium-oxygen batteries is still in its infancy, and there are still many problems in its development process, such as: high charging overpotential, low energy conversion efficiency, poor cycle stability, etc.

The study of its mechanism is helpful to fundamentally find a solution to these problems; however, there are still problems including the complexity of the interface reaction mechanism, the instability of intermediate products and the lack of in situ imaging data, etc.

[0003] Electron microscopy, including in-situ SEM and in-situ TEM, uses the interaction between electron beams and samples to characterize the growth and decomposition process of discharge products in situ, but there are problems such as sample preparation and electrolytic cell construction.

Scanning probe technology, including in situ STM and in situ AFM, can realize in situ observation of the electrode interface process, but the invasiveness of the probe and the complexity of sample preparation restrict its further development

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