Microelectrode system and method for testing oxygen mass transfer coefficient of proton exchange membrane

A proton exchange membrane and mass transfer coefficient technology, applied in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problem of consuming large catalyst and membrane materials, time-consuming and labor-intensive assembly of batteries, and difficulty in obtaining the influence of binders, etc. problem, achieve the effect of saving battery materials and simplifying the testing process
CN111413255AActive Publication Date: 2020-07-14ZHEJIANG UNIV
12 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2020-07-14

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a microelectrode system and method for testing an oxygen mass transfer coefficient of a proton exchange membrane. The system comprises an electromagnetic shielding box, an on-off type temperature controller and an environment cavity formed in the electromagnetic shielding box; atmosphere can be continuously introduced into the environment cavity, and humidity can be monitored; a high-temperature-resistant clamping device, a platinum disc microelectrode with the effective diameter being 10 micrometers, a platinum sheet electrode, a silica gel heating plate and a temperature sensor are arranged in the environment cavity; the clamping device is used for sequentially superposing and clamping the proton exchange membrane to be detected, the platinum sheet electrode and the silica gel heating plate; the on-off temperature controller is connected with the silica gel heating plate, the temperature sensor is used for monitoring the temperature of the silica gel heating plate, the platinum disc microelectrode serves as a working electrode, and the platinum sheet electrode serves as a counter electrode and a reference electrode and is connected to the electrochemical workstation. According to the system and the method disclosed in the invention, the mass transfer coefficient of oxygen in various polymer electrolytes can be quantitatively and accurately characterized, and quantitative guidance is provided for optimization of a catalytic layer structure.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of fuel cells, and relates to a microelectrode system and method for testing the oxygen mass transfer coefficient of a proton exchange membrane, which can be used to quantitatively test the diffusion coefficient, solubility and permeability of oxygen in a proton exchange membrane under high temperature and low humidity conditions The microelectrode system with the same parameters and the corresponding electrochemical testing techniques. Background technique

[0002] With the progress and development of the human industrial level, the extensive use of fossil energy has led to serious environmental pollution and energy shortages. Therefore, the development of new and environmentally friendly renewable energy has become one of the current research hotspots. Among them, proton exchange membrane fuel cells (PEMFCs) are considered to be a new type of energy conversion device with great potential. Its working principle is:...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More