Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Chonnam National University

Korea Institute of Industrial Technology

In Yu Park

Bo Ki Hong

Jae Jun Ko

Jong Kil Oh

Jae Woon Hong

Sun Ju Song

Aniket Kumar

Ye Jin Yun

So Young Lee

Jung Han Yu

Sukhwan Yun

Byoung Su Kim

Dae Yong Son

Jea Sung Park

Song I Oh

Oh Kyung Kwon

Hyoung Juhn Kim

Dong An Cha

Ha Soo Hwang

Disclosed are a polymer electrolyte membrane for fuel cells which has improved handling properties and mechanical strength by employing symmetric-type laminated composite films and a method for manufacturing the same.

Polymer electrolyte membrane for fuel cells and method for manufacturing the same

Disclosed are a membrane-electrode assembly (MEA) and a method of manufacturing the same. The MEA include an electrolyte membrane and a pair of electrodes, the electrodes being disposed on both surfaces of the electrolyte membrane, respectively. At least one of the electrolyte membranes and electrodes includes an ion-conducting polymer having a proton-conducting functional group, and a compound represented by Chemical Formula 1 is bonded to each of all or some of the proton-conducting functional groups:MAx  [Chemical Formula 1]

Durable membrane-electrode assembly with high ionic conductivity and method of manufacturing same

Disclosed are an antioxidant for fuel cells, a membrane electrode assembly including the same and a method for preparing the antioxidant. The antioxidant for fuel cells includes a core including at least one selected from the group consisting of a metal oxide (MO) and a complex metal oxide (MNO, N and M being different metals), and an outer portion (e.g., a shell) located on or over a surface of the core and formed by performing reduction treatment of the surface of the core using a thiourea-based compound. The outer portion includes metal cations (M, n being a natural number of 1 or more) having a smaller oxidation number than a valency of the metal (M) of the core.

Antioxidant for fuel cells, membrane electrode assembly including the same and method for preparing antioxidant

Disclosed is an electrolyte membrane including an antioxidant containing elemental sulfur or a sulfur compound to improve antioxidant activity and resistance to acids. In addition, a membrane-electrode assembly including the electrolyte membrane is disclosed.

Electrolyte membrane with improved chemical durability and membrane-electrode assembly including same

Disclosed are a highly durable electrolyte membrane having improved ion conductivity and a method of producing the same. The electrolyte membrane may include an ionomer having hydrogen ion conductivity and a complex dispersed in the ionomer. The complex may include: a support; a primary antioxidant loaded on the support and having radical scavenging ability; and a secondary antioxidant loaded on the support and having peroxide decomposition activity.

Highly durable electrolyte membrane having improved ion conductivity and production method therefor

Disclosed are an antioxidant which increases chemical durability of a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same. The antioxidant may prevent chemical degradation of the fuel cell and have improved antioxidation capability through a reduction reaction annealing process.

Antioxidant for fuel cells and fuel cell comprising the same

Disclosed are a membrane-electrode assembly and a method for manufacturing the same. The membrane-electrode assembly has durability and proton conductivity which are improved by employing an ion conductive polymer having improved chemical durability and ion conductivity.

Membrane-electrode assembly with improved durability and proton conductivity and method for manufacturing the same

Disclosed is an antioxidant for an electrolyte membrane of fuel cells. The antioxidant may include a support including silicon dioxide and having a nanotube shape, and a metal oxide supported on the support.

Antioxidant for electrolyte membrane of fuel cells and method for preparing the same

Disclosed are a membrane electrode assembly with a sub-gasket and a manufacturing method thereof. The membrane electrode assembly includes an electrolyte membrane, the sub-gasket formed in an edge region of the electrolyte membrane to surround a central region of the electrolyte membrane, and an adhesive layer formed between the electrolyte membrane and the sub-gasket and including an adhesive material and an antioxidant. The electrolyte membrane is formed to have a flat surface in a first direction, the sub-gasket extends in the first direction and a second direction vertical to the first direction, and the antioxidant includes a metal salt hydrate.

Membrane electrode assembly for fuel cells and manufacturing method thereof

Disclosed are a membrane-electrode assembly for fuel cells and a method of manufacturing the same. The membrane-electrode assembly for fuel cells may include an electrolyte membrane including a phosphonic acid functionalized graphene oxide in order to improve the mechanical strength and proton conductivity thereof and a method of manufacturing the same.

Membrane-electrode assembly for fuel cells with improved mechanical strength and proton conductivity and method of manufacturing the same

A moisture adsorption composition that is a vacuum dried powder, that is a metal chloride-impregnated, nanoporous material including a crystallization reaction product of an aluminum precursor and a dicarboxylic acid organic ligand having an average particle diameter of 100 to 2,000 nm, a pore size of 0.6 to 1.7 nm, and a maximum moisture adsorption amount of from 0.2 to 0.9 g/g within a driving pressure (P/P) that ranges from 0.1 to 0.3. The composition is prepared by synthesizing the nanoporous material by a crystallization reaction between the aluminum precursor and the dicarboxylic acid organic ligand; heat-treating to purify the nanoporous material; impregnating the nanoporous material by mixing with a metal chloride solution in water having a weight ratio of the metal chloride to the nanoporous material of 10:2.5 to 10:50; drying the mixture; crushing the dried product; and vacuum drying the crushed product to provide the moisture adsorption composition.

Moisture adsorption composition, a method of preparing the same, and a surface coating including the same

Disclosed are an antioxidant for fuel cells and a membrane-electrode assembly including the same. The membrane-electrode assembly may have obtained greatly improved durability by using an antioxidant having a novel composition that may provide excellent antioxidant activity and long-term durability.

Antioxidant for fuel cells and membrane-electrode assembly including the same

Disclosed are a membrane-electrode assembly for fuel cells having improved durability and a manufacturing method thereof. Hydrogen peroxide, from which a hydroxyl radical is generated, may be removed using an antioxidant having the structure AA'BOand including strontium or samarium, thereby improving the durability of an electrolyte membrane and an electrode.

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Seoul, South Korea

In Yu Park