Abstract:
Provided is a production method of a membrane-electrode assembly which is capable of improving dispersibility of a hygroscopic inorganic matter on a binder phase of a polymer inside an electrode. The membrane-electrode assembly comprises a first electrode containing an electrode catalyst, a hydrogen ion conductive hydrocarbon binder resin, and a silica precursor dispersed in the binder resin; a second electrode; and an electrolyte membrane inserted between the first and second electrodes. The manufacturing method of the membrane-electrode assembly comprises the steps of converting the silica precursor into polymerized silica by supplying hydrogen ions or hydronium ions, and water to the first electrode of the membrane-electrode assembly and inducing hydrolysis and polymerization of the silica precursor. [Reference numerals] (AA) Voltage/V_SHE; (BB) Current density/mA cm^-2
Abstract translation:提供了能够提高吸湿性无机物质在电极内的聚合物的粘结相上的分散性的膜电极接合体的制造方法。 膜 - 电极组件包括含有电极催化剂,氢离子传导性烃粘合剂树脂和分散在粘合剂树脂中的二氧化硅前体的第一电极; 第二电极; 以及插入在第一和第二电极之间的电解质膜。 膜 - 电极组件的制造方法包括以下步骤:通过向氢氧离子或水合氢离子提供二氧化硅前体,并将水转移到膜 - 电极组件的第一电极并诱导二氧化硅前体的水解和聚合。 (标号)(AA)电压/ V_SHE; (BB)电流密度/ mA cm ^ -2
Abstract:
PURPOSE: An electrolyte film for fuel cells is provided to have excellent strength while suppressing acid component eruption. CONSTITUTION: An electrolyte film(13) for fuel cells is obtained by impregnating a polymerizable acid monomer(12) into a polymer film(10) which contains inorganic particles(11) surface-treated by a polymerizable double bond-containing surface treating agent; and polymerizing the polymerizable acid monomers. The amount of the polymer film is 1-50 weight% based on the 100.0 parts by weight of the polymer film. A membrane-electrode assembly for fuel cells comprises a fuel electrode; an oxygen electrode; and an electrolyte film for fuel cells, between the oxygen electrode and the fuel electrode. [Reference numerals] (AA) Polymer film containing surface treated inorganic particles; (BB) Polymeric acid monomer dopping; (CC) Polymerization
Abstract:
PURPOSE: A composition is provided to provide a composite membrane with excellent proton conductivity even at a low phosphoric acid impregnation level. CONSTITUTION: A composition comprises a compound indicated in chemical formula 1: M^1A_b, and an azole-based compound indicated in chemical formula 2: M^2_cA_d. In chemical formula 1 and 2, M^1 is a tetravalent metal element, M^2 is one or more selected from a monovalent metal element, divalent metal element, or trivalent metal element, A is chloride, hydroxide, oxide, nitrite(N), sulfate or phosphate, b is a number from 1-5, c is a number from 1-2, and d is a number from 2-4. [Reference numerals] (AA) Intensity(arb. unit)
Abstract:
PURPOSE: An inorganic ion conductor with improved conductivity is provided to provide a fuel cell with excellent cell potential and output density in a middle temperature and non-humidifying condition when applied to an electrolyte membrane. CONSTITUTION: An inorganic ion conductor includes a trivalent metal element, a pentavalent metal element, phosphorous, and oxygen. The inorganic ion conductor has a cubic or a pseudo-cubic crystal structure. A manufacturing method of the inorganic ion conductor comprises a step of obtaining a mixture by mixing a trivalent metal element precursor, a pentavalent metal element precursor, and a phosphorous precursor to obtain a mixture; and a step of heat-treating the mixture. An electrolyte film for a fuel cell consists of the inorganic ion conductor. The fuel cell includes the inorganic ion conductor. [Reference numerals] (AA) Temperature (°C); (BB) SnP207 (comparative example 1); (CC) Fe0.5Ta0.5 (example 14); (DD) Fe0.5Nb0.5 (example 8); (EE) In0.5Sb0.5 (example 1)