Electrode for polymer electrolyte membrane fuel cell and method for forming membrane-electrode assembly using the same
A technology for electrolyte membranes and fuel cells, applied in solid electrolyte fuel cells, fuel cell components, battery electrodes, etc., can solve problems such as reducing hydrogen ion conductivity and reducing fuel cell performance
Active Publication Date: 2011-06-01
HYUNDAI MOTOR CO LTD
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Problems solved by technology
The generated hydroxyl radicals decompose the functional groups (-SO 3 H), reducing the conductivity of hydrogen ions, thereby reducing the performance of the fuel cell
Method used
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Embodiment 1 to 3
[0093] In the first exemplary embodiment, in Example 1, by mixing 4 parts by weight of carbon nanotubes as one of the carbon nanofibers with a solvent relative to 100 parts by weight of the catalyst (6 parts by weight were used in Example 2 Parts of carbon nanotubes, 8 parts by weight of carbon nanotubes were used in Example 3), and 10 parts by weight of cerium-zirconium oxide as a free radical inhibitor was added to the mixture to prepare a catalyst slurry. The prepared catalyst slurry was properly coated on release paper and dried, and the dried electrode was hot-pressed onto the polymer membrane, thereby forming the membrane electrode assembly of each embodiment.
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Abstract
The present invention provides an electrode for a polymer electrolyte membrane fuel cell (PEMFC) and a method for forming a membrane-electrode assembly (MEA) using the same, in which carbon nanofibers are added to a catalyst layer to increase the mechanical strength of the catalyst layer and to maintain the thickness of the catalyst layer after operation for a long time, thus preventing a reduction in physical durability of the fuel cell, and cerium-zirconium oxide (CeZrO4) as a radical inhibitor is added to the catalyst layer, thus preventing a reduction in chemical durability of the fuel cell. As a result, it is possible to physically and chemically increase the performance and durability of the fuel cell membrane-electrode assembly in a robust manner and minimize the reduction in performance after operation for a long time.
Description
technical field [0001] The present disclosure generally relates to membrane electrode assemblies for fuel cells. More particularly, it relates to an electrode of a polymer electrolyte membrane fuel cell (PEMFC) and a method of using the same to form a membrane electrode assembly (MEA), which improves the physical durability of the fuel cell by adding carbon nanofibers and suppresses agent to improve the chemical durability of fuel cells. Background technique [0002] In general, polymer electrolyte membrane fuel cells (PEMFCs) have advantages such as high energy efficiency, high current density, high power density, short start-up time, and quick response to load changes compared to other types of fuel cells. In particular, PEMFCs are less sensitive to changes in the pressure of the reactant gas and provide outputs in various ranges. Therefore, PEMFCs can be used in various applications such as energy sources for zero-emission vehicles, stand-alone power plants, portable en...
Claims
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IPC IPC(8): H01M4/86H01M4/90H01M4/88
CPCY02E60/50H01M4/921H01M4/8896H01M4/8605H01M4/926H01M4/96H01M4/88H01M8/02H01M8/10
Inventor 黄仁哲权落显李在承
Owner HYUNDAI MOTOR CO LTD