Kolon Industries, Inc.

Moo Seok Lee

Yong Cheol Shin

Na Young Kim

Dong Hoon Lee

Kwang Jin Lee

Young Seok Oh

Yong-Cheol Shin

Kyoung Ju Kim

Seong Hak Choi

Jin Hyung Lee

Eun Soo Lee

Eun Su Lee

Han Moon Cho

Young Tai Woo

Youn Tai Woo

Disclosed are a polymer electrolyte membrane, a method for manufacturing the same and a membrane-electrode assembly comprising the same, the polymer electrolyte membrane includes a hydrocarbon-containing ion conductive layer; and a fluorine-containing ion conductor discontinuously dispersed on the hydrocarbon-containing ion conductive layer.

Polymer electrolyte membrane, a method for fabricating the same, and a membrane-electrode assembly including the same

Provided are a polymer electrode membrane including a porous support including a web of nanofibers of a first hydrocarbon-based ion conductor that are arranged irregularly and discontinuously; and a second hydrocarbon-based ion conductor filling the pores of the porous support, the first hydrocarbon-based ion conductor being a product obtained by eliminating at least a portion of the protective groups (Y) in a precursor of the first hydrocarbon-based ion conductor represented by Formula (1), a method for producing the polymer electrolyte membrane, and a membrane electrode assembly including the polymer electrolyte membrane: wherein m, p, q, M, M', X and Y respectively have the same meanings as defined in the specification.

Polymer electrolyte membrane, method for fabricating same, and membrane-electrode assembly comprising same

Disclosed are a reinforced composite membrane for fuel cells including a porous support comprising three-dimensionally irregularly and discontinuously arranged nanofibers of a polymer and a first ionic conductor, and a second ionic conductor filling pores of the porous support, wherein the first ionic conductor is present as nanofibers in the porous support or is present in the nanofibers of the polymer to form the nanofibers together with the polymer, and a membrane-electrode assembly for fuel cells including the same. As a result, impregnation uniformity and impregnation rate of the ionic conductors are improved and proton (hydrogen ion) conductivity is thus enhanced.

Reinforced composite membrane for fuel cell and membrane-electrode assembly for fuel cell comprising the same

The present invention relates to a polymer electrolyte membrane, and a membrane-electrode assembly and a fuel cell containing the same, and the polymer electrolyte membrane comprises a polymer comprising repeating units represented by the following chemical formulas 1-3. Chemical formulas 1-3 are as defined in the specification. The polymer electrolyte membrane has excellent resistance to radical attack and has improved acid-base interaction, thereby maximizing the function of an ion conductive group, and thus can improve the operation performance of a fuel cell in a low humidification state.

Polymer electrolyte membrane, membrane-electrode assembly comprising the same and fuel cell comprising the same

Provided are a polymer electrolyte membrane used in fuel cells, and a method for producing the same, the method including a step of filling a crosslinkable ion conductor in the pores of a porous nanoweb support; and a step of crosslinking the ion conductor filled in the pores of the porous nanoweb support. The method for producing a polymer electrolyte membrane uses a relatively smaller amount of an organic solvent, can ameliorate defects of the support caused by solvent evaporation, and can enhance the impregnability of the ion conductor to the support and the convenience of the process.

Polymer electrolyte and preparation method thereof

A hollow fiber membrane module is disclosed. In particular, technology for achieving a reduction in pressure deviation of channels generated when an external fluid passes through a case, thereby achieving a uniform flow rate of the fluid through each channel.

Hollow fiber membrane module

A membrane humidifier is disclosed. The membrane humidifier may include: a housing in which a hollow fiber membrane bundle is mounted, the hollow fiber membrane bundle being formed by integrating a plurality of hollow fiber membranes; a potting portion fixing an end portion of the hollow fiber membrane bundle to the housing and coupled to an end portion of the housing so as to hermetically seal the housing; and a sealing member disposed between the housing and the potting portion and hermetically sealing the housing.

Membrane humidifier

A braid-reinforced composite hollow fiber membrane is disclosed. The braid-reinforced composite hollow fiber membrane comprising a reinforcing material of a tubular braid and a polymer resinous thin film coated on the surface of the tubular braid according to the present invention is characterized in that: the tubular braid comprises multifilaments made of monofilaments having a crimp rate of 2 to 40%, and the peeling strength of the tubular braid and a polymer resinous thin film coated on the surface thereof is 1 to 10 MPa. In the composite hollow fiber membrane, the crimp rate of the monofilaments constituting the tubular braid of the reinforcing material is 2 to 40%, thus the surface area of the tubular braid contacted with the polymer resinous thin film is increased. Thus, the peeling strength of the tubular braid and the polymer resinous thin film coated on the surface thereof is excellent.

Braid-reinforced composite hollow fiber membrane

A braid-reinforced composite hollow fiber membrane is disclosed. The braid-reinforced composite hollow fiber membrane comprising a reinforcing material of a tubular braid and a polymer resinous thin film coated on the surface of the tubular braid is characterized in that: the tubular braid comprises multifilaments made of monofilaments having a fineness of 0.01 to 0.4 denier, and the peeling strength of the tubular braid and a polymer resinous thin film coated on the surface thereof is 1 to 10 MPa. In the composite hollow fiber membrane, the fineness of the mono filaments constituting the tubular braid of the reinforcing material is small, that is, 0.01 to 0.4 denier, thus the surface area of the tubular braid contacted with the polymer resinous thin film is increased. Thus, the peeling strength of the tubular braid and the polymer resinous thin film coated on the surface thereof is excellent, and at the same time, the initial wetting property of the composite hollow fiber membrane is excellent, that is, 80 to 120%, due to a capillary tube phenomenon or the like.

Disclosed is a submerged hollow fiber membrane module which is easy to expand, has a small installation area, and exhibits excellent contamination prevention and durability. The submerged hollow fiber membrane module comprises: (I) a module body divided into two portions which has a permeated water collection space () and a permeated water outlet (); (II) module support tubes () which are vertically connected to the upper and lower ends of the module body; (III) a plate type module header insertion layer which is provided with hollow fiber membrane spaces (), and is inserted into the module body; (IV) a plate type diffusion layer which is provided with a diffusion port () and diffusion tubes () and is inserted into the module body subsequent to the module header insertion layer; and (V) module headers which are inserted into the module header insertion layer.

Submerged hollow fiber membrane module

The present invention discloses a submerged hollow fiber membrane module which is of such a structure that it is easy to expand a module processing capability according to a treatment capacity, provides convenient module coupling properties and module manufacturing properties, maintains a stable flux under an efficient air diffusion condition and prevents the damage of membranes and water leakage caused by the loosening of module connecting regions. The submerged hollow fiber membrane module comprises [I] two module headers (and') having a filtrate water collecting portion () for collecting filtrate water filtered through hollow fiber membranes and a filtrate water outlet (), [II] an air diffusion unitconsisting of support tubes (and&#x2032;) fixing the two module headers (and&#x2032;) while keeping them spaced a predetermined distance and air diffusion tubes (and&#x2032;) having air diffusion holes (), and [III] a bundle of hollow fiber membranes () having both opposite ends fixed to the insides of the module headers (and&#x2032;) by an adhesive () so as to form a water collecting space within the module headers (and&#x2032;), the ends () of the hollow portions of the hollow fiber () membranes being opened and disposed in parallel to a filtrate water discharge surface ().

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Seoul, South Korea

Moo Seok Lee