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Direct methanol fuel cell test device

A methanol fuel cell and testing device technology, applied in measurement devices, measurement electricity, material separation, etc., can solve problems such as inaccurate results, high requirements for experimental equipment, and complicated operations.

Inactive Publication Date: 2011-07-27
STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A literature search found that Verdrugge MW proposed a method for testing the diffusion coefficient of methanol in a proton exchange membrane at room temperature by using the tracer atom method in an article published in the Journal of the Electrochemical Society No. 136 in 1989, but this method requires experimental equipment. high, complex operation
In 1996, Kauranen P S et al. proposed a method of estimating the leakage rate of methanol in the proton exchange membrane by using the time response of the anode peak current to the two working electrodes in the 26th issue of the Journal of applied electrochemistry, mainly By detecting the CO produced by the cathode 2 The concentration is estimated, because part of the methanol does not react at the cathode but is directly discharged with the air, resulting in inaccurate detection results
At present, there is no relevant report on the test device specially designed for measuring methanol leakage and membrane electrode performance at home and abroad.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The overall structure of the test device is shown in the figure, mainly including sealing ring 1, cover 2, left and right middle partitions 3, left inner chamber (ie, electrolyte chamber) 4, left and right circulating water chambers 5, outer wall 6, inner wall 7, water inlet pipe joint 8. Cover with intake pipe 9 and exhaust pipe 10, partition plate rectangular hole 11, bolt 12, right inner chamber (ie oxygen chamber) 13, outlet pipe joint 14, etc. The outer walls of the left and right circulating water chambers, the walls of the left and right inner chambers and the base materials of the left and right intermediate partitions selected by this device can be metal plates such as steel plates, copper plates or aluminum plates, or non-metallic plates such as plexiglass and PTFE with certain strength. Connect by welding, bonding or riveting. After the connection is formed, spray polytetrafluoroethylene (PTFE) or other corrosion-resistant insulating materials on the surface o...

Embodiment 2

[0024] Measurement of Methanol on the Permeability of Proton Exchange Membranes:

[0025] Before carrying out the test, check the airtightness of the device, replace the proton exchange membrane with a thin glass slide, clamp the thin glass slide between the two partitions, add methanol solution of required concentration into the electrolyte chamber, and add Pure water (water storage chamber), after two hours, use a gas chromatograph to detect the concentration of methanol in the pure water. If no methanol can be detected, it means that the test device has good sealing performance and can be used. When testing the methanol leakage of the proton exchange membrane, the treated proton exchange membrane 17 is clamped between the left and right partitions of the test device, and the modified PTFE cushion, silica gel cushion or rubber cushion is used as the sealing gasket 18 for sealing , using bolt connection to clamp the proton exchange membrane to be tested. Add methanol solutio...

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PUM

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Abstract

The invention discloses a direct methanol fuel cell test device which comprises a left circular water cavity and a right circular water cavity, wherein a left middle partition plate and a right middle partition plate for clamping a proton exchange membrane or a membrane electrode are arranged between the left circular water cavity and the right circular water cavity; a left inner chamber and a right inner chamber respectively connected with the left middle partition plate and the right middle partition plate are respectively arranged in the left circular water cavity and the right circular water cavity; the left middle partition plate and the right middle partition plate are respectively provided with openings communicated with the left inner chamber and the right inner chamber; the left inner chamber is an electrolyte chamber, and the right inner chamber is a water chamber or an oxygen chamber provided with an air inlet pipe and an air exhaust pipe. The invention can measure the discharge performance and the methanol leakage of the membrane electrode. By matching with a fuel cell test platform, the invention can measure the discharge performance of the membrane electrode; and by matching with a gas phase chromatograph, the invention can measure the methanol leakage of the proton exchange membrane conveniently.

Description

Technical field: [0001] The invention relates to a direct methanol fuel cell testing device. Background technique: [0002] Direct methanol fuel cell (Direct Methanol Fuel Cell, DMFC) directly uses liquid methanol as fuel. Apart from being equipped with a very simple methanol storage, no other devices are needed. Methanol fuel is easy to carry and replace, and it is very convenient to use. Therefore, in the past ten years, The development and application of DMFC technology is developing rapidly. Many universities, research institutes and major companies at home and abroad have spent huge manpower and material resources on DMFC research and development. The focus of the research is to reduce the cost of DMFC, improve the performance of DMFC, and make it suitable for commercial application. [0003] At present, the development of direct methanol fuel cells still faces some difficulties, one of which is that the solid electrolyte membrane widely used in direct methanol fuel ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36G01M3/02G01N30/02
Inventor 廖萍倪红军张成进汪兴兴黄明宇朱昱
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH