摘要:
The invention is a catalyst for solid polymer fuel cell having catalyst particles composed of platinum, cobalt and magnesium supported on a carbon powder carrier, in which a composition ratio (molar ratio) among platinum, cobalt and magnesium in the catalyst particles is Pt : Co : Mg = 1 : 0.4 to 0.5 : 0.00070 to 0.00095. This catalyst is manufactured by supporting cobalt and magnesium on a platinum catalyst and then conducting a heat treatment and a treatment to be brought into contact with an oxidizing solution, the feature of the catalyst manufactured in this manner includes a peak position of a main peak appearing between 2¸ = 40° and 42° in X-ray diffraction analysis, and the peak position is shifted to from 41.0° to 41.5°.
摘要:
The present invention provides a catalyst for a solid polymer fuel cell, having excellent initial activity and good durability and a production method thereof. The present invention is a catalyst for a solid polymer fuel cell, including catalyst particles composed of platinum or a platinum alloy supported on a carbon powder carrier, the catalyst having sulfo groups (-SO 3 H) at least on the catalyst particles, and the catalyst further having a fluorine compound having a C-F bond supported at least on the catalyst particles. It is preferred in the catalyst of the present invention that sulfur content is 800 ppm or more and 5000 ppm or less based on the mass of the whole catalyst and the amount of the fluorine compound is 3 mass% or more and 24 mass% or less based on the mass of the whole catalyst.
摘要:
[Object] Provided is a catalyst having a high catalytic activity. [Solving Means] Disclosed is a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein the catalyst support includes pores having a radius of less than 1 nm and pores having a radius of 1 nm or more, a surface area formed by the pores having a radius of less than 1 nm is equal to or larger than a surface area formed by the pores having a radius of 1 nm or more, and an average particle diameter of the catalyst metal is 2.8 nm or more.
摘要:
The present invention aims to provide a catalyst that makes it possible to reduce an amount of solid electrolyte mixed and improve initial performance of a fuel cell, and also a method for producing the catalyst. The present invention relates to a catalyst for a solid polymer fuel cell, which has sulfo groups (-SO 3 H) on catalyst particles. In TEM-EDX analysis, a ratio (I S /I Pt ) of a sulfur peak intensity (I S ) to a platinum peak intensity (I Pt ) on the catalyst particles is within a range of 0.0044 or more and 0.0090 or less. The catalyst makes it possible to reduce the amount of solid electrolyte added and also a fuel cell with excellent initial performance, and thus contributes to a practical use of a fuel cell.
摘要翻译:本发明的目的在于提供一种能够减少固体电解质的混合量,提高燃料电池的初期性能的催化剂,以及催化剂的制造方法。 本发明涉及一种在催化剂颗粒上具有磺基(-SO 3 H)的固体高分子型燃料电池用催化剂。 在TEM-EDX分析中,催化剂粒子上的硫峰强度(I S)与铂峰强度(I Pt)的比(I S / I Pt)在0.0044以上且0.0090以下的范围内。 催化剂使得可以减少添加的固体电解质的量以及具有优异的初始性能的燃料电池,从而有助于实际使用燃料电池。
摘要:
The present invention is a catalyst for a solid polymer fuel cell including: catalyst particles of platinum, cobalt and manganese; and a carbon powder carrier supporting the catalyst particles, wherein the component ratio (molar ratio) of the platinum, cobalt and manganese of the catalyst particles is of Pt : Co : Mn = 1 : 0.06 to 0.39 : 0.04 to 0.33, and wherein in an X-ray diffraction analysis of the catalyst particles, the peak intensity ratio of a Co-Mn alloy appearing around 2¸ = 27° is 0.15 or less on the basis of a main peak appearing around 2¸ = 40°. It is particularly preferred that the catalyst have a peak ratio of a peak of a CoPt 3 alloy and an MnPt 3 alloy appearing around 2¸ = 32° of 0.14 or more on the basis of a main peak.
摘要:
The present invention aims to provide a catalyst that makes it possible to reduce an amount of solid electrolyte mixed and improve initial performance of a fuel cell, and also a method for producing the catalyst. The present invention relates to a catalyst for a solid polymer fuel cell, which has sulfo groups (-SO 3 H) on catalyst particles. In TEM-EDX analysis, a ratio (I S /I Pt ) of a sulfur peak intensity (I S ) to a platinum peak intensity (I Pt ) on the catalyst particles is within a range of 0.0044 or more and 0.0090 or less. The catalyst makes it possible to reduce the amount of solid electrolyte added and also a fuel cell with excellent initial performance, and thus contributes to a practical use of a fuel cell.
摘要:
Provided is a catalyst for solid polymer fuel cell that exhibits excellent initial activity and favorable durability and a method for manufacturing the same. The invention is a catalyst for solid polymer fuel cell which is formed by supporting catalyst particles including platinum, cobalt and manganese on a carbon powder carrier, wherein a composition ratio (molar ratio) among platinum, cobalt and manganese in the catalyst particles is Pt : Co : Mn = 1 : 0.06 to 0.39 : 0.04 to 0.33, a peak intensity ratio of a Co-Mn alloy appearing in the vicinity of 2¸ = 27° is 0.15 or less with respect to a main peak appearing in the vicinity of 2¸ = 40° in X-ray diffraction analysis of the catalyst particles, and a fluorine compound having a C-F bond is supported at least on the surface of the catalyst particles. The amount of the fluorine compound supported is preferably from 3 to 20% with respect to the entire mass of the catalyst.
摘要:
The present invention provides a catalyst for a polymer electrolyte fuel cell including catalyst particles made of platinum supported on a carbon powder carrier, wherein the carbon powder carrier includes 0.7 to 3.0 mmol/g (based on the weight of the carrier) of a hydrophilic group bonded thereto; and the platinum particles have an average particle size of 3.5 to 8.0 nm and the platinum specific surface area based on CO adsorption (COMSA) of 40 to 100 m 2 /g. The catalyst for a polymer electrolyte fuel cell according to the present invention is a catalyst excellent in initial activity and satisfactory in durability.