Lg Chem, Ltd

Go-Young Moon

Won-Ho Lee

Sang-hyun Lee

Hwang-chan Yoo

Hyuk Joo Kim

Sang-Hyun Lee

Chong-Kyu Shin

Bong-Keun Lee

Jae-hyuk Chang

Young-ji Tae

Young-Ji Tae

Young-Il Choi

Chang-ae Cho

Seong-Min Song

Ha-Chull Chung

Kyoung-Il Park

Jae-Hyuk Chang

Chang-Ae Cho

Hwang-Chan Yoo

Provided are an ion conductive resin fiber, an ion conductive hybrid membrane, a membrane electrode assembly and a fuel cell. The ion conductive resin fiber comprises an inner layer including an ion conductive resin; and an outer layer including an ion conductive resin having larger EW than the ion conductive resin of the inner layer, and surrounding the inner layer. The ion conductive resin fiber and the ion conductive hybrid membrane are excellent in ion conductivity, polar solvent stability and dimensional stability under low humidity conditions. The fuel cell manufactured using the same has advantages of stable operation and management of a system at ease, removal or reduction of components related to water management, and even in case of low relative humidity, operation at high temperature of 80&#xb0; C. or higher.

Ion conductive resin fiber, ion conductive hybrid membrane, membrane electrode assembly and fuel cell

The present invention relates to a branched and sulphonated multi block copolymer and an electrolyte membrane using the same, more precisely, a branched and sulphonated multi block copolymer composed of the repeating unit represented by formula 1 and a preparation method thereof, a hydrogenated branched and sulphonated multi block copolymer, a branched and sulphonated multi block copolymer electrolyte membrane and a fuel cell to which the branched and sulphonated multi block copolymer electrolyte membrane is applied.  The electrolyte membrane of the present invention has high proton conductivity and excellent mechanical properties as well as chemical stability, so it can be effectively used for the production of thin film without the decrease of membrane properties according to the increase of sulfonic acid group since it enables the regulation of the distribution, the location and the number of sulfonic acid group in polymer backbone.

Branched and sulphonated multi block copolymer and electrolyte membrane using the same

The present invention relates to a gasketed membrane-electrode assembly comprising gaskets arranged on each side of a membrane-electrode assembly including a cathode, an anode, and a polymer electrolyte membrane, in which the gaskets are multilayered films comprising an elastic layer and an adhesive layer formed on each side of a support layer. According to the present invention, the gasket film can be united with the polymer electrolyte membrane, and the leakage of fuel gas and oxidizing gas decreases on operation of a fuel cell. In addition, various materials can be selected for each layer of the gasket. Thus, it can be suitable for mass production of a polymer fuel cell due to its simple manufacturing process.

Gasketed membrane-electrode-assembly and fuel cell system employing the same

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Daejeon, South Korea

Go-Young Moon