Samsung Sdi Co., Inc.

You-Mee Kim

Ho-Jin Kweon

Min-Kyu Song

Young-Mi Park

Sung-Guk An

Si-Hyun Lee

Hee-Woo Rhee

Hee-Tak Kim

Sang-Il Han

Eui-Hwan Song

Yong-Beom Lee

Jeong-Soon Shin

Won-Chull Han

Cheon-Soo Kim

Chang-Bong Lee

Tae-Shik Earmme

Takaki Mori

Kwang-Sup Kim

The polymer electrolyte membrane of the present invention includes a proton conductive cation exchange resin, a non-proton-conductive polymer, and an inorganic additive. The inorganic additive is adapted to inhibit a phase separation between the proton conductive cation exchange resin and the non-proton-conductive polymer.

Polymer membrane and membrane-electrode assembly for fuel cell and fuel cell system comprising same

The present invention relates to a membrane-electrode assembly for a fuel cell and a fuel cell system comprising the same. The membrane-electrode assembly includes an anode and a cathode facing each other and a polymer electrolyte membrane positioned therebetween. The polymer electrolyte membrane adheres to the anode through a binder disposed between the polymer electrolyte membrane and the anode, and adheres to the cathode through a binder disposed between the polymer electrolyte membrane and the cathode. The binder and the polymer electrolyte membrane can include a cation exchange resin and an inorganic additive.

Membrane-electrode assembly for fuel cell with binder layer having inorganic additive and fuel cell system using the same

A membrane-electrode assembly includes a polymer electrolyte membrane with an anode and a cathode on opposite sides. Each of the anode and the cathode includes an electrode substrate, and a catalyst layer is formed on at least one of the electrode substrates and includes at least one proton conductive crosslinked polymer. The membrane-electrode assembly may include catalyst layers that are positioned on opposite sides of a polymer electrolyte membrane, either of which includes at least one crosslinked proton conductive polymer.

Binder for a fuel cell catalyst composition, a membrane electrode assembly for a fuel cell using the binder and a method for preparing a membrane electrode assembly

The membrane-electrode assembly of the present invention includes an anode and a cathode facing each other, and a polymer electrolyte membrane interposed therebetween. At least one of the anode and the cathode includes an electrode substrate and a metal catalyst layer disposed thereon. The metal catalyst layer includes a metal catalyst and a liquid crystal material.

Membrane electrode assembly for fuel cell and fuel cell system including the same

The polymer electrolyte membrane of the present invention includes polymers having a fluoroalkyl group and a proton conductive group. The present invention also provides a membrane-electrode assembly, a fuel cell system including the polymer electrolyte membrane, and a method of making the polymer electrolyte membrane by a chemical grafting method. The amount of the proton conductive groups in the polymer electrolyte membrane can be controlled, the membrane thickness can be easily controlled, adherence between a polymer electrolyte membrane and an electrode is improved due to the fluoroalkyl of the polymer, and long-term stability of a membrane-electrode assembly is improved.

Polymer membrane for fuel cell, method of preparing same, and membrane-electrode assembly for fuel cell comprising same

The polymer electrolyte membrane according to the present invention includes a proton-conducting polymer including metal ions bound to polyalkylene oxide. The polymer electrolyte membrane can save manufacturing cost of a fuel cell and improve proton conductivity and mechanical strength.

Polymer electrolyte membrane for fuel cell and fuel cell system comprising same

A polymer electrolyte membrane for a direct oxidation fuel cell includes a porous polymer supporter having a plurality of pores, and a hydrocarbon fuel diffusion barrier layer which is formed on the polymer supporter and contains an inorganic additive dispersed in a cation exchange resin.

Polymer electrolyte for a direct oxidation fuel cell, method of preparing the same, and direct oxidation fuel cell comprising the same

Disclosed is an electrolyte for a rechargeable lithium battery including an additive for overcharge inhibition comprising a compound represented by formula 1; a lithium salt; and a non-aqueous organic solvent: 

Electrolyte for rechargeable lithium battery and rechargeable lithium battery

Disclosed in an electrolyte for a rechargeable lithium battery, including a mixture of organic solvents including a cyclic solvent and a nitrile-based solvent represented by formula 1 and a lithium salt.

Electrolyte for rechargeable lithium battery and rechargeable lithium battery comprising same

A pouched lithium secondary battery including a battery unit having a positive electrode plate, a negative electrode plate, and a separator disposed between the positive electrode plate and the negative electrode plate; a positive electrode tab electrically connected with the positive electrode plate; a negative electrode tab electrically connected with the negative electrode plate; a case having a space to accommodate the battery unit, and a sealing edge around the space; and a positive electrode voltage applying unit to apply a positive electrode voltage to both the positive electrode tab and the case.

Pouched lithium secondary battery

A secondary cell capable of ensuring thermal and mechanical stabilities required for a high-capacity cell with a simple structure is provided. The secondary cell includes: a can; and an electrode jelly-roll wound with two different electrodes and a separator interposed between the electrodes therein and accommodated in the can, the outer surface of the electrode jelly-roll being wound around one more turn with the separator. Only the separator is wound at the core of the electrode jelly-roll to form a rod-like stability member which is cured by absorbing heat generated from the cell. The separator wound at the core of the electrode jelly-roll is continuous from a portion of the separator which is stacked with the two different electrodes.

Secondary cell with improved electrode jelly-roll structure

The present invention provides an electrode binder of a lithium-ion secondary battery. The binder includes at least two materials selected from a polyvinylidene fluoride polymer. The materials have the same chemical component as each other but different physical characteristic from each other. The materials are a homopolymer and a copolymer of the polyvinylidene fluoride polymer. The binder also includes at least two materials selected from a rubber polymer binder and a polyvinylidene fluoride polymer. The materials have the different chemical component as each other. A mixture ratio of the homopolymer and the copolymer are selected within a range of 50:50 to 95:5 wt %. It is preferable that the polyvinylidene fluoride and rubber polymer binder are mixed within a rate of 20:80 to 80:20 wt %.

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Suwon-si, South Korea

You-Mee Kim