In-situ Raman spectrum pool and electrochemical in-situ spectrum testing method

An in-situ Raman and spectral cell technology, applied in the field of electrochemical spectroscopy, can solve the problems of difficulty in evaluating the sealing performance of the spectral cell, the reliability of electrochemical testing performance, the replacement and cleaning of unfavorable windows and other components, and the pollution research system. Guaranteed long-term normal operation, easy reuse, and simple assembly process

Active Publication Date: 2019-05-21
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the epoxy resin will release organic molecules and swell under long-term immersion in the organic electrolyte. to clean
In particular, there is almost no electrochemical data of parallel testing in the electrochemical Raman spectroscopic cell in the literature, and it is difficult to evaluate the reliability of the sealing performance of the existing spectroscopic cell and the performance of the electrochemical test

Method used

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  • In-situ Raman spectrum pool and electrochemical in-situ spectrum testing method
  • In-situ Raman spectrum pool and electrochemical in-situ spectrum testing method
  • In-situ Raman spectrum pool and electrochemical in-situ spectrum testing method

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Embodiment 1

[0041] Such as Figure 1 to Figure 3 As shown, the present invention provides an in-situ Raman spectroscopic cell, which includes an upper plate 1 made of conductive material and a base 2 made of insulating material. Preferably, the conductive material for the upper pole plate 1 and the window fixing plate 5 is metal, and the insulating material for the base 2 is plastic.

[0042] The upper pole plate 1 and the base 2 overlap up and down and are tightly connected together by screws 13 and bolts 14 . The center of the upper plate 1 is provided with an inverted tapered hole groove, and the lower end surface of the inverted tapered hole groove is provided with a sealing groove, and the first sealing member 3, the window sheet 4 and the conductive The window made of material fixes the plate 5 to close the bottom of the inverted tapered hole groove. In this embodiment, the sealing member 3 is a sealing ring, and the sealing sleeve is connected to the outside of the lower half of ...

Embodiment 2

[0055] Taking nickel-manganese lithium-rich manganese base as the positive electrode material to be tested, the in-situ Raman spectroscopic cell of the present invention is used for testing as follows:

[0056] (1) Preparation of the electrode to be tested:

[0057] Mix nickel-manganese lithium-rich manganese-based positive electrode materials, acetylene black, and polyvinylidene fluoride (PVDF) in a mass ratio of 8:1:1, and use N-methylpyrrolidone (NMP) as a solvent to make a slurry, and apply it on the On electrode 6-2, dry overnight at 80°C in a vacuum oven.

[0058] (2) Assembly of in-situ Raman spectroscopy cell:

[0059] Such as image 3 As shown, the conductive upper cover 6-1, the electrode to be tested 6-2, the diaphragm 6-3, the lithium sheet 6-4, the second sealing member 6-5 and the conductive bottom case 6-6 are stacked in order to form a battery assembly 6. Put the battery assembly 6 into the electrode tank of the base 2, add electrolyte solution into the elec...

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Abstract

The invention discloses an in-situ Raman spectrum pool and an electrochemical in-situ spectrum testing method. The spectrum pool comprises an upper pole plate made of a conductive material and a basemade of an insulating material, wherein the upper pole plate and the base are overlapped up and down and are tightly matched and connected together through screws and bolts; an opening is formed in the center of the upper pole plate, a window piece made of a transparent material is arranged at the bottom of the opening, and the window piece seals the bottom of the opening; an electrode groove is formed in the center of the upper end face of the base, a spring groove is formed in the bottom of the electrode groove, a conductive spring is arranged in the spring groove, a spring sleeve is arranged at the bottom of the electrode groove and abuts against the upper portion of the conductive spring, and a battery assembly can be placed in the electrode groove and located above the spring sleeve;a conductive screw is arranged on the side edge of the base, one end of the conductive screw extends out of the base, and the other end of the conductive screw is in contact with the electrode groovein the base; and the conductive screw, the conductive spring, the battery assembly and the upper pole plate form a conductive path. The device is high in spectrogram quality and good in sealing performance.

Description

technical field [0001] The invention relates to an in-situ Raman spectroscopic pool and an electrochemical in-situ spectroscopic testing method, belonging to the field of electrochemical spectroscopy. Background technique [0002] Non-aqueous electrochemical systems such as organic electrolytes are an important direction in the field of electrochemical research. Compared with common aqueous electrochemical systems, non-aqueous systems such as organic electrolytes have a wider electrochemical window, which can provide greater output Voltage has strongly promoted the development of systems such as lithium batteries. In the research of organic electrolyte systems such as lithium batteries, the influence of electrode material structure on its electrochemical performance has always been the focus of research. Conventional electrochemical performance characterization methods can reflect the electrochemical performance of materials, but they cannot be directly used to study the es...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65G01N27/403
Inventor 黄晶鑫刘波刘必聚赵金保任斌
Owner XIAMEN UNIV
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