Korea Institute of Energy Research

Sung Dae Yim

Gu Gon Park

Young Jun Sohn

Seok Hee Park

Tae Hyun Yang

Chang Soo Kim

Min Jin Kim

Byung Chan Bae

Seung Gon Kim

Byungchan Bae

Minjin Kim

Hye Jin Lee

Young Gi Yoon

Young Woo Choi

Dong Won Shin

Mi Soon Lee

Won Yong Lee

Hwan Yeong Oh

Seung Hee Woo

So Jeong Lee

Yoon Young Choi

Sung Hee Shin

Kwang Hyun Chang

Seong Hun Cho

Eun Ja Lim

A hierarchical fault classification method for a fuel cell system, a multi-stage fault diagnosis method therefor, and a fault diagnosis device therefor are disclosed. The fuel cell system is divided into a subsystem, a component, and an element step by step. The multi-stage fault diagnosis method includes detecting a subsystem, a fault of which occurs, in the fuel cell system composed of a plurality of subsystems and detecting an upper-level component, which causes the fault, among upper-level components included in the subsystem, the fault of which occurs, using measurement data and a control signal.

Method and apparatus for multi-stage fault diagnosis of fuel cell systems

Provided is a method for manufacturing a membrane-electrode assembly. The method includes forming an electrode layer, preparing a porous support layer, and positioning the electrode layer on each of both surfaces of the porous support layer and hot-pressing the electrode layer positioned on the both surfaces. The forming of the electrode layer incudes forming a functional layer including a hydrogen ion conductive binder resin on at least a portion of an electrode catalyst layer, and forming an electrolyte layer on at least a portion of the functional layer. The preparing of the porous support layer includes performing a pretreatment process by impregnating the porous support layer with a pretreatment composition, and the performing of the pretreatment process includes dipping the porous support layer in a first pretreatment composition and then drying the porous support layer, and dipping the porous support layer after drying in a second pretreatment composition.

Membrane-electrode assembly and method for manufacturing the same

Provided are a metal oxide-carbon nanomaterial composite, a method of preparing the metal oxide-carbon nanomaterial composite, a catalyst, a method of preparing the catalyst, and a catalyst layer that includes the catalyst and that is used for fuel cell electrodes. The metal oxide-carbon nanomaterial composite includes a metal oxide particle having a specific surface area of 5 square meters per gram (m2/g) or less, and a carbon nanomaterial formed on a surface of the metal oxide particle. The catalyst includes a metal oxide-carbon nanomaterial composite in which a carbon nanomaterial is formed on a metal oxide particle, and an active metal particle formed on a surface of the carbon nanomaterial.

Metal oxide-carbon nanomaterial composite, method of preparing the same, catalyst, method of preparing the same, and catalyst layer for fuel cell electrodes

The present invention concerns the preparation of an anion binder for a solid alkaline fuel cell which enhances durability to electrochemical reactions and makes the production of electrode slurry easy. A method of preparing an anion binder for a solid alkaline fuel cell includes: (A) mixing an electrolytic monomer of quaternary ammonium salts having a cation group, a bisacrylicamide crosslinking agent having a tertiary amino group, and water together by stirring; (B) mixing the mixture with a photoinitiator; (C) interposing the solution between polyethylene terephthalate films and irradiating the solution with ultraviolet light for crosslinking and polymerization; and (D) pulverizing crosslinked polymerized resin to a nano size.

Anion binder for solid alkaline fuel cell, method of preparing the same and membrane-electrode assembly

An anion exchange composite membrane is filled with crosslinked polymer electrolytes for fuel cells. A method comprises, (A) preparing anion exchange electrolyte precursor solution, said anion exchange electrolyte precursor solution consisting of a electrolyte monomer of tetravalent ammonium salt having a cation, a bisacrylamide crosslinker having tertiary amine functional group, an initiator and water; (B) impregnating a porous polymer supporter into said electrolyte precursor solution; (C) forming primary anion exchange crosslink polymer electrolyte micropore filling membrane by laminating said polymer supporter and crosslinking within a film; (D) deriving quanternary ammonium of said crosslinker having tertiary amine functional group by immersing said primary anion exchange crosslink polymer electrolyte micropore filling membrane in Vinylbenzyl chloride monomer solution; and (E) preparing composite membrane filled with crosslinked polymer electrolytes by crosslinking after said ammonium deriving is complete, said crosslinking being radical polymerizing vinyl group of said electrolyte micropore filling membrane.

Anion exchange composite membrane filled with crosslinked polymer electrolytes for fuel cells and method for preparing the same

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Daejeon, South Korea

Sung Dae Yim