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Non-Humidified Fuel Cell

A fuel cell and fuel gas technology, used in fuel cells, fuel cell parts, solid electrolyte fuel cells, etc., can solve the problems of fuel cell power generation efficiency drop, catalyst layer humidity reduction, membrane electrode conductivity drop and other problems

Inactive Publication Date: 2015-05-27
HYUNDAI MOTOR CO LTD
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  • Claims
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Problems solved by technology

[0008] However, in these types of fuel cells, when the humidification fails, resulting in a non-humidified fuel cell, the hydrophobic GDL reduces the humidity of the catalytic layer so that the conductivity of the membrane electrode drops sharply and the power generation efficiency of the fuel cell drops significantly.

Method used

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Embodiment Construction

[0019] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals refer to the same elements.

[0020] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles such as passenger vehicles including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles , including water vehicles of various boats and ships, aircraft, etc., and including hybrid fuel cell vehicles, electric fuel cell vehicles, plug-in hybrid electric fuel cell vehicles, hydrogen-powered fuel cell vehicles and other alternative fuel cell vehicles. As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, eg, gasoline-powered and electric vehicles.

[0021] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be...

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Abstract

A nonhumidified fuel cell is provided that includes a catalytic layer coupled to an anode or a cathode that is configured to accelerate an electrochemical reaction of a fuel gas or air, and a gas diffusion layer that has air pores diffusing the fuel gas or air to the catalytic layer and diffusing water generated by the electrochemical reaction with the fuel gas in the catalytic layer. In particular, a ratio of a volume of water to a volume of air pores of the gas diffusion layer ranges from about 0.1 to 0.4.

Description

technical field [0001] The present invention relates to a non-humidified fuel cell (non-humidified fuel cell) with enhanced operating performance. Background technique [0002] A fuel cell is a power generation system that directly converts the energy of a chemical reaction between hydrogen and oxygen contained in hydrocarbon substances such as methanol, ethanol, or natural gas into electrical energy. [0003] Fuel cells are generally classified into phosphoric acid type fuel cells, molten carbonate fuel cells, solid oxide fuel cells, polymer electrolyte membrane fuel cells (PEMFC), or alkaline fuel cells, etc., according to the type of electrolyte used. Generally, fuel cells share the same general operating principle and differ only in the type of fuel used, operating temperature, catalysts, electrolytes, etc. For example, PEMFC has excellent output performance and low operating temperature. This allows the vehicle to start quickly and have good response characteristics a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02
CPCH01M8/02H01M4/8647H01M4/8657H01M8/0245H01M8/04171H01M2008/1095H01M4/8605Y02E60/50
Inventor 朴熙成
Owner HYUNDAI MOTOR CO LTD
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