Hyundai Motor Company

Il Hee Cho

Jong Hyun Lee

In Chul Hwang

Nak Hyun Kwon

Hyo Seop Kim

Yong Hun Cho

Yung Eun Sung

In Su Park

Disclosed is a technique of diagnosing a state of a fuel cell system. The technique includes configuring a processor to calculate a duty ratio and an average output current, based on real-time driving data for a preset driving period, during operation of a fuel cell vehicle; obtain a reference current value from the calculated duty ratio and the calculated average output current; and determine a state of a fuel cell system by choosing a state graph corresponding to the obtained reference current value among a plurality of state graphs which vary depending on each reference current value.

Method and apparatus for diagnosing state of fuel cell system

The present invention relates to a process for preparing electrode catalyst materials for a polymer electrolyte membrane fuel cell (PEMFC), and particularly to a high-performance platinum-non-platinum mixed electrode catalyst (Pt&#x2014;RuOs/C) having a physically mixed structure of RuOs alloy and platinum materials, which is prepared by adding a small amount of platinum (Pt) to RuOs alloy materials highly dispersed on a carbon support, where the amount of platinum used is drastically reduced as compared to the conventional platinum materials, thus lowering the manufacturing cost.

Method for preparing the mixed electrode catalyst materials for a PEM fuel cell

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Gyeonggi-do, South Korea

Il Hee Cho