Device and method for preparing diffusion layer slurry of proton exchange membrane fuel cell

A proton exchange membrane and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low cost and high mixing efficiency, achieve high mixing efficiency, wide application prospects, and solve temperature control problems

Inactive Publication Date: 2012-07-18
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the advantages of high mixing efficiency, low cost, easy operation, anti-demulsification, etc. It can effectively prevent the deposition of solid-liquid separation during the use of materials, and solve the problems existing in the current production practice.

Method used

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  • Device and method for preparing diffusion layer slurry of proton exchange membrane fuel cell
  • Device and method for preparing diffusion layer slurry of proton exchange membrane fuel cell
  • Device and method for preparing diffusion layer slurry of proton exchange membrane fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The two rotating shafts of the low-speed agitator are symmetrically installed on both sides of the 1 / 6d away from the center of the turret. The rotating shaft passes through the turret and meshes with the large gear fixed on the frame through the pinion gear. The transmission ratio is 1:2. The type of low-speed agitator is a twist frame, which can stir the slurry to the greatest extent. The two rotating shafts of the high-speed disperser are installed symmetrically on both sides 1 / 4d away from the center of the turret, perpendicular to the line connecting the center of the low-speed rotating shaft. 10cm. Two sets of internal cooling components are installed, which are symmetrically installed at 2 / 5d from the center of the turret, at a 60° angle to the low-speed rotation axis. The heat exchange tube is coil type, and the flow rate is 120L / h. The mixing tank is a jacketed structure with a volume of 30L and a slurry handling capacity of 20L.

[0037] Start the automatic ...

Embodiment 2

[0040] The two rotating shafts of the low-speed agitator are symmetrically installed on both sides of the 1 / 6d away from the center of the turret. The rotating shaft passes through the turret and meshes with the large gear fixed on the frame through the pinion gear. The transmission ratio is 1:2. The type of low-speed agitator is a twist frame, which can stir the slurry to the greatest extent. The two rotating shafts of the high-speed disperser are installed symmetrically on both sides 1 / 4d away from the center of the turret, perpendicular to the line connecting the center of the low-speed rotating shaft. 10cm. Two sets of internal cooling components are installed, which are symmetrically installed at 2 / 5d from the center of the turret, at a 60° angle to the low-speed rotation axis. The heat exchange tube is coil type, and the flow rate is 120L / h. The mixing tank is a jacketed structure with a volume of 40L and a slurry handling capacity of 30L.

[0041] Start the automatic ...

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Abstract

The invention relates to a device and method for preparing diffusion layer slurry of a proton exchange membrane fuel cell. The device comprises a power device, a transmission device, a mixing tank, a low-speed mixer, a high-speed disperser, internal cooling modules and the like, wherein the transmission device comprises a hollow low-speed transmission main shaft and a high-speed transmission shaft which is arranged in the hollow main shaft; the transmission device is arranged on the transmission shaft; the low-speed mixer, the high-speed disperser and the internal cooling modules are arranged on a rotary frame and rotate together along with the rotary frame; and meanwhile, the high-speed disperser is driven to rotate at high speed by the high-speed transmission shaft connected to the transmission device; and a circulating water pipeline is introduced by a pipeline shaft arranged in the hollow high-speed transmission shaft to realize an internal cooling function. The device provided by the invention has the internal cooling function during the slurry preparation process for the first time, and thereby, the demulsification problem caused by internal temperature rise in the high-viscosity slurry preparation is solved, and moreover, premixing treatment and high-speed dispersion are integrated into the same device, so that the device has the advantages of high handling capacity, wide applicable viscosity range, high efficiency, low cost, easiness in operation and the like.

Description

technical field [0001] The invention relates to a device and a method for preparing slurry for a diffusion layer of a proton exchange membrane fuel cell, belonging to the field of fuel cell preparation. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a power generation device that converts chemical energy into electrical energy through electrochemical reactions. It has the advantages of high energy density, low operating temperature and good stability. It is used in mobile devices, electric vehicles (EV), distributed It has broad application prospects in power stations and other fields. Its core component, the three-in-one membrane electrode (MEA), is prepared by a hot-pressing process from a gas diffusion layer, a catalytic layer and a proton exchange membrane. Composed of conductive porous materials, the gas diffusion layer plays multiple roles such as supporting the catalytic layer, collecting current, conducting gas, and discharging water. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/86
CPCY02E60/50
Inventor 于新海白文田涂善东赖焕新陆荣华
Owner EAST CHINA UNIV OF SCI & TECH
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