Hyundai Motor Company

Industry-university Cooperation Foundation Sogang University

Industry-university Cooperation Foundation

Sogang University Corporation

Hee Woo Rhee

Young Taek Kim

Jong Hyun Lee

Min Sung Kim

In Chul Hwang

Bum Suk Kim

Nak Hyun Kwon

Hwan Soo Shin

Min Kyu Song

Ki Yun Cho

Bo Ra Shin

Kyu Yoon Choi

Li Jin Ghil

The present invention provides a method for preparing a nanoporous ultra-low dielectric thin film including a high-temperature ozone treatment and nanoporous ultra-low dielectric thin film prepared by the same method. The method includes preparing a mixture of an organic silicate matrix-containing solution and a reactive porogen-containing solution; coating the mixture on a substrate to form a thin film; and heating the thin film with an ozone treatment. The prepared nanoporous ultra-low dielectric thin film could have a dielectric constant of about 2.3 or less and a mechanical strength of about 10 GPa or more by improving a pore size and a distribution of pores in the thin film by performing an ozone treatment with high temperature and optimization of the ozone treatment temperature.

Method for preparing a nanoporous ultra-low dielectric thin film including a high-temperature ozone treatment and a nanoporous ultra-low dielectric thin film prepared by the same method

The present invention relates to a polymer blend electrolyte membrane comprising an inorganic polymer having polydimethylsiloxane as a main chain, which has a pore structure at both ends formed by condensation reaction between 3-aminopropyltriethoxysilane and tetraethylorthosilicate, wherein phosphoric acid is chemically linked to an amino group of the pore structure; and a proton-conducting polymer having a cation exchange group at the side chain thereof, as well as a manufacturing method thereof. Generally, proton-conducting electrolyte membranes have significantly reduced ion conductivity at high temperatures. However, proton-conducting electrolyte membranes have advantages in terms of efficiency and cost, and thus it is needed to develop an electrolyte membrane, which has excellent ion conductivity even at high temperature. Accordingly, the present invention aims to provide a polymer blend electrolyte membrane for use at high temperature and a manufacturing method thereof.

Polymer blend electrolyte membrane for use at high temperature and manufacturing method thereof

The present invention relates to a composite electrolyte membrane for fuel cells that has high proton conductivity and low fuel permeability even under low humidity conditions and at elevated temperatures. The membrane, comprising a cation exchange resin and acid-treated dendrimers, has great utility in large and medium fuel cells for applications in household appliances, electric vehicles, etc.

Composite electrolyte membrane with nanoscopic dendrimers and method of preparing same

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Seoul, South Korea

Hee Woo Rhee