Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Chonnam National University

Korea Advanced Institute of Science and Technology

Industry-Academic Cooperation Foundation Gyeongsang National University

Jong Kil Oh

Bo Ki Hong

In Yu Park

Jung Han Yu

Aniket Kumar

Sun Ju Song

Jae Woon Hong

Byeong-Heon Jeong

Sukhwan Yun

Il Seok Chae

Ye Jin Yun

Sae Hoon Kim

Ki Hyun Kim

Jae Jun Ko

Seong Ik Park

Teh Hwan Cho

Gun Hyung Park

Taek-Soo Kim

Dong Yeon Han

Dae Yong Son

Byoung Su Kim

Sanwi Kim

Han Ki Sung

Soon Ki Kwon

Hyun Joo Lee

Han Sol Ko

Mi Jeong Kim

Kyung-Rim Jang

Chi Woo Roh

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

The present disclosure to an electrolyte membrane containing a polyfluorene-based ionomer, and more particularly, to an electrolyte membrane containing a polyfluorene-based ionomer which has a fluorene main chain composed of only a carbon-carbon bond and a side chain composed of a perfluorosulfonic acid group. The electrolyte membrane containing the polyfluorene-based ionomer has high proton conductivity, excellent chemical durability, excellent mechanical property, and excellent volume stability.

Electrolyte membrane including polyfluorene-based ionomer and manufacturing method thereof

Disclosed are a method for manufacturing a polymer electrolyte membrane for fuel cells in which a plurality of porous reinforcement films and ionomer layers are continuously disposed or stacked, and a polymer electrolyte membrane for fuel cells manufactured thereby. The polymer electrolyte membrane for fuel cells includes the porous reinforcement films, thus having excellent mechanical stiffness and improved physical durability. Further, the polymer electrolyte membrane for fuel cells includes an ionomer layer including a catalyst for decomposing peroxide configured to block gas crossover and may thus minimize performance degradation due to gas crossover and prevent an electrical short, and the polymer electrolyte membrane for fuel cells makes it easy to adjust the position of the ionomer layer in the electrolyte membrane in the thickness direction and may thus effectively mitigate gas crossover.

Method for manufacturing polymer electrolyte membrane for fuel cells and polymer electrolyte membrane for fuel cells manufactured thereby

Disclosed is a method of producing an antioxidant that has excellent antioxidant ability and is well dispersed when applied to a membrane-electrode assembly (MEA). The method includes a step of preparing a powder including reduced metal oxide and a step of mixing the powder with a powdery ionomer to obtain an antioxidant in which the ionomer is bound to the surface of the reduced metal oxide.

Method of producing antioxidant with improved antioxidant ability and dispersion property for membrane-electrode assembly

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 is a catalyst complex for a fuel cell. The catalyst complex includes a support including carbon (C), platinum (Pt) supported on the support, and an iridium (Ir) compound supported on the support, and the iridium compound includes at least one of iridium oxide represented by Chemical Formula 1, IrO, and iridium-transition-metal oxide represented by Chemical Formula 2, IrMO, wherein M is a transition metal selected from the group consisting of Fe, Co, Cu, Ni and combinations thereof, and x is from 1 to 2.

Catalyst complex for fuel cell and method of manufacturing same

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

Disclosed are a catalyst composite for a fuel cell and a method of manufacturing the same. The catalyst composite includes a support containing carbon (C), a metal catalyst supported on the support, and an ionomer binder coated on the surface of the support and on the surface of the metal catalyst. The ionomer binder coated on the surface of the metal catalyst is formed so as to be thinner than the ionomer binder coated on the surface of the support.

Catalyst composite for fuel cell and method of manufacturing the same

A fuel cell system and a control method thereof are provided. In the system, an oxygen sensor is mounted on the anode inlet side and the anode outlet side of a fuel cell stack to measure an oxygen concentration. Based on the measured oxygen concentration, a control operation is performed on the fuel cell system to reduce the oxygen concentration on the anode side. Accordingly, the irreversible deterioration of the fuel cell occurring due to the reverse voltage of the cell during driving of the fuel cell vehicle and the cathode carbon corrosion occurring due to the inflow of air during parking are effectively reduced, thereby increasing the durability of the fuel cell and the fuel cell vehicle.

Fuel cell system having oxygen sensor, and control method thereof

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.

Membrane-electrode assembly for fuel cells having improved durability and manufacturing method thereof

A membrane electrode assembly includes: an electrolyte membrane; a cathode and an anode, each being stacked on the electrolyte membrane; and subgaskets bonded to a peripheral region of the electrolyte membrane, which is outside an active area, in which each of the cathode and the anode are stacked on the electrolyte membrane. The electrolyte membrane is disposed in at least a portion of the peripheral region of the electrolyte membrane, which is outside the active area, with a water discharge blocking region for preventing water in the electrolyte membrane from diffusing and being discharged to outside.

Membrane electrode assembly for fuel cells and manufacturing method thereof

A method for improving freezing resistance of a membrane electrode assembly is provided. In particular, the method improves freezing resistance of a membrane electrode assembly including conducting drying and heat treatment under certain conditions to produce an electrode that reduces formation of macro-cracks and micro-cracks in the electrode. Accordingly, water does not permeate the electrode excessively and the electrode does not break even when frozen.

Growing community of inventors

Gyeonggi-do, South Korea

Jong Kil Oh