Abstract:
PURPOSE: A crosslinked irreversible chemical gel film-type ion exchange membrane, its preparation method and a fuel cell containing the ion exchange membrane are provided, to reduce the effect of moisture and methanol on the hydrogen ion conductivity, to reduce the thickness and to improve the ion conductivity. CONSTITUTION: The ion exchange membrane is such that its crosslinking point is formed by the crosslinking reaction of a structural unit A selected from the groups represented by the formulas 1 and 2, and it comprises a structural unit B selected from the groups represented by the formula 3 or ArR7, wherein R1 to R5 are independent each another and are H, a phenyl group, an alkyl group of C1-C4, an alkylene group of C1-C4, an alkynyl group of C1-C4, a nitrile group or a functional group capable of inducing the condensation independently(i.e. epoxy, cyanate, ester and halogen); R6 is H or an alkyl group of C1-C4; Ar is a substituted or unsubstituted phenyl group(wherein the substituent is a phenyl group, an alkyl group of C1-C4, an alkylene group of C1-C4, or an alkynyl group of C1-C4); and R7 is -SO3H, -COOH or -P(O)(OR8)OH(wherein R8 is H or an alkyl group of C1-C4).
Abstract:
PURPOSE: An ion exchange composite membrane, its preparation method, a composite solution, and a fuel cell containing the membrane are provided, wherein the membrane intercepts methanol selectively without deterioration of the diffusion of hydrogen ions. CONSTITUTION: The ion exchange composite membrane comprises clay or organic clay dispersed into an ion conductive polymer film. Preferably the clay or organic clay is inserted into or coated on an ion conductive polymer film. The clay is at least one selected from the group consisting of pyrophylite-talc, smectite (montmorillonite), vermiculite, illite, mica and brittle mica group. The ion conductive polymer has at least one group selected from the group consisting of sulfonate, carboxylate, phosphate, imide, sulfonimide and sulfonamide, and is preferably nafion or sulfonated polystyrene-block-ply(ethylene-ran-butylene)-block-polystyrene. Preferably the fuel cell is a direct methanol fuel cell using methanol as a fuel.
Abstract:
PURPOSE: A crosslinked irreversible chemical gel film-type ion exchange membrane, its preparation method and a fuel cell containing the ion exchange membrane are provided, to reduce the effect of moisture and methanol on the hydrogen ion conductivity, to reduce the thickness and to improve the ion conductivity. CONSTITUTION: The ion exchange membrane is such that its crosslinking point is formed by the crosslinking reaction of a structural unit A selected from the groups represented by the formulas 1 and 2, and it comprises a structural unit B selected from the groups represented by the formula 3 or ArR7, wherein R1 to R5 are independent each another and are H, a phenyl group, an alkyl group of C1-C4, an alkylene group of C1-C4, an alkynyl group of C1-C4, a nitrile group or a functional group capable of inducing the condensation independently(i.e. epoxy, cyanate, ester and halogen); R6 is H or an alkyl group of C1-C4; Ar is a substituted or unsubstituted phenyl group(wherein the substituent is a phenyl group, an alkyl group of C1-C4, an alkylene group of C1-C4, or an alkynyl group of C1-C4); and R7 is -SO3H, -COOH or -P(O)(OR8)OH(wherein R8 is H or an alkyl group of C1-C4).
Abstract:
본 발명은 분리능이 있는 수소 이온 교환 복합막, 복합 용액, 그 제조방법 및 이를 포함하는 연료전지에 관한 것으로서, 본 발명에 따른 이온 교환 복합막은 배리어 물질인 클레이 또는 유기화된 유기 클레이가 이온 전도성 고분자 필름에 분산되어 있는 구조를 갖고 있다. 이러한 이온 교환 복합막은 메탄올을 선택적으로 차단하면서도 수소 이온의 확산에 큰 저하가 없으며, 또한 비용면에서도 유리한 장점을 가지고 있다. 따라서, 본 발명의 이온 교환 복합막은 메탄올을 연료로 하는 직접 메탄올 연료전지에 유용하게 사용될 수 있다.
Abstract:
PURPOSE: Provided are an inorganic-polymer composite material attached with nano particles on its surface by using dendrimer, in which inorganic nano particles are well dispersed on surface of polymer material without permanent cohesion, and a method for producing the same. CONSTITUTION: The method comprises the steps of (i) forming an anhydride reactor on a matrix of polymer material; (ii) selectively adding either of metal or inorganic salt to dendrimer, to form either of dendrimer-metal precursor solution or dendrimer-inorganic particles solution; (iii) reacting the matrix with the either solution to chemically combine with each other; and (iv) irradiating the combined product to reduce metal or inorganic particle ion. The matrix is a polymer film having anhydride functionality attached by plasma treating the polymer film in the presence of maleic anhydride.