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A multi-channel multi-purpose electrochemical mass spectrometer

An electrochemical and multi-channel technology, applied in the field of analysis, can solve the problems that are difficult to meet the large-scale research and application of energy storage materials, and achieve the effect of good versatility

Active Publication Date: 2017-09-15
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is difficult to meet the needs of large-scale research and application of energy storage materials

Method used

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  • A multi-channel multi-purpose electrochemical mass spectrometer
  • A multi-channel multi-purpose electrochemical mass spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Analysis of gases involved in the discharge process of lithium-oxygen batteries. Assemble the battery in the glove box, let it stand for 45 minutes, and connect it to the attached figure 1110 places in the middle. The three-way valve 104 and the three-way valve 109 are switched to the bypass (the carrier gas does not pass through the battery at this time), and the argon / oxygen mixed gas 111 (carrier gas / reaction gas) passes through the multi-way valve 106 and the filter 107 to the flow meter 108 in sequence . The flow rate of the flow meter is set according to the experimental requirements, and then the gas enters the mass spectrometer 101 through the three-way valve 109, the three-way valve 104, the cold trap 103, and the filter 102 in sequence. Observe the response signal of the mass spectrometer 101, and switch the three-way valve 104 and the three-way valve 109 to allow the carrier gas / reaction gas to pass through the electrochemical cell 110 after the nitrogen ga...

Embodiment 2

[0036] Simultaneous analysis of lithium-ion and lithium-sulfur batteries.

[0037] After assembling the two batteries in the glove box for 45 minutes, connect one of the batteries to the attached figure 2 205 in the middle. The three-way valve 207 and the three-way valve 204 are switched to the bypass (the carrier gas does not pass through the battery at this time), and the argon gas 210 (carrier gas / reaction gas) passes through the multi-way valve 211 , the filter 209 , and reaches the flow meter 208 . The flow rate of the flowmeter is set according to the experimental requirements, and then the gas enters the mass spectrometer 201 through the three-way valve 207, the three-way valve 204, the cold trap 203, and the filter 202 in sequence. Connect another battery to the figure 2 215 in the middle. The three-way valve 214 and the three-way valve 218 are switched to the bypass (the carrier gas does not pass through the battery at this time), and the argon gas 210 (carrier g...

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Abstract

The invention relates to a multi-channel multi-purpose electrochemical mass spectrometer, which belongs to the field of analysis technology. The invention realizes multi-purpose and multi-channel analysis by optimizing the design of the electrochemical cell and the carrier gas sampling system, and simultaneously monitoring the electrochemical signal and the mass spectrum signal. Electrochemical mass spectrometer includes electrochemical cell and carrier gas sampling system (multi-port, multi-port valve, filter, flow meter, electrochemical cell, cold trap), multi-channel electrochemical workstation and multi-channel mass spectrometer. Through the control of the gas circuit, interface, gas type, and gas flow, multiple channels can be provided for connecting different electrochemical cells. The electrical signals such as voltage, current, battery capacity, and time control during the working process of the electrochemical cell are controlled by the electric The chemical workstation controls and records, and the gas types and contents produced / consumed and their changes over time are displayed and recorded by the mass spectrometer. Moreover, the electrochemical mass spectrometer has good versatility, which not only meets the needs of laboratories, but also meets the needs of battery companies.

Description

technical field [0001] The invention belongs to the technical field of analysis, and in particular relates to a multi-channel multi-purpose electrochemical mass spectrometer. Background technique [0002] In the development of electrochemical science, modern electrochemical analysis techniques for studying the products or intermediate products of electrochemical reactions have played a very important role. In recent years, on-site or off-site spectral analysis techniques (such as infrared spectrophotometry, surface-enhanced Raman spectroscopy), surface analysis techniques (such as XPS, Auger photoelectron spectroscopy) and gas and liquid chromatography of electrochemical systems have been combined. Analytical technology has advanced very significantly. Among these numerous electrochemical spectroscopy coupled technologies, the results of electrochemical mass spectrometry analysis are intuitive and reliable, and can analyze the gaseous product production / consumption of react...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26G01N27/62
Inventor 彭章泉马力坡王佳伟
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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