JOHNSON MATTHEY FUEL CELLS LIMITED Patent applications |
Patent application number | Title | Published |
20160126561 | USE OF AN ANODE CATALYST LAYER - A method of operating a fuel cell having an anode, a cathode and a polymer electrolyte membrane disposed between the anode and the cathode, includes feeding the anode with an impure hydrogen stream having low levels of carbon monoxide up to 5 ppm, and wherein the anode includes an anode catalyst layer including a carbon monoxide tolerant catalyst material, wherein the catalyst material includes: (i) a binary alloy of PtX, wherein X is a metal selected from the group consisting of Ti, V and Cr, and wherein the atomic percentage of platinum in the alloy is from 45 to 80 atomic % and the atomic percentage of X in the alloy is from 20 to 55 atomic %; and (ii) a support material on which the PtX alloy is dispersed; wherein the total loading of platinum in the anode catalyst layer is from 0.01 to 0.2 mgPt/cm | 05-05-2016 |
20160006041 | USE OF AN ANODE CATALYST LAYER - A method of operating a fuel cell having an anode, a cathode and a polymer electrolyte membrane disposed between the anode and the cathode, includes feeding the anode with an impure hydrogen stream having low levels of carbon monoxide up to 5 ppm, wherein the anode includes an anode catalyst layer including a carbon monoxide tolerant catalyst material, wherein the catalyst material includes: (i) a binary alloy of PtX, wherein X is a metal selected from the group consisting of Nb and Ta, and wherein the atomic percentage of platinum in the alloy is from 45 to 80 atomic % and the atomic percentage of X in the alloy is from 20 to 55 atomic %; and (ii) a support material on which the PtX alloy is dispersed; wherein the total loading of platinum in the anode catalyst layer is from 0.01 to 0.2 mgPt/cm | 01-07-2016 |
20150380758 | CO- TOLERANT CATALYST FOR PAFC - A binary alloy catalyst comprising platinum and tantalum, wherein the tantalum is present in the alloy at 15 to 50 atomic % and a phosphoric acid fuel cell comprising such a catalyst is disclosed. The catalyst provides a better CO tolerance. | 12-31-2015 |
20150086902 | THIN FILM CATALYTIC MATERIAL FOR USE IN FUEL - A catalytic material includes (i) a support material and (ii) a thin film catalyst coating having an inner face adjacent to the support material and an outer face, the thin film catalyst coating having a mean thickness of ≦8 nm, and wherein at least 40% of the support material surface area is covered by the thin film catalyst coating; and wherein the thin film catalyst coating includes a first metal and one or more second metals, and wherein the atomic percentage of first metal in the thin film catalyst coating is not uniform through the thickness of the thin film catalyst coating. | 03-26-2015 |
20140205928 | TERNARY PLATINUM ALLOY CATALYST - A platinum alloy catalyst PtXY, wherein X is nickel, cobalt, chromium, copper, titanium or manganese and Y is tantalum or niobium, characterised in that in the alloy the atomic percentage of platinum is 46-75 at %, of X is 1-49 at % and of Y is 1-35 at %; provided that the alloy is not 66 at % Pt 20 at % Cr14 at % Ta or 50 at % Pt, 25 at % Co, 25 at % Ta is disclosed. The catalyst has particular use as an oxygen reduction catalyst in fuel cells, and in particular in phosphoric acid fuel cells. | 07-24-2014 |
20130330651 | CATALYST LAYER - A catalyst layer including an electrocatalyst and an oxygen evolution catalyst, wherein the oxygen evolution catalyst includes a crystalline metal oxide including:
| 12-12-2013 |
20130224623 | MEMBRANE STRUCTURE - A membrane, suitable for use in a fuel cell, comprises:
| 08-29-2013 |
20130209912 | CATALYST - A platinum alloy catalyst PtXY, wherein X is a transition metal (other than platinum, palladium or iridium) and Y is a transition metal (other than platinum, palladium or iridium) which is less leachable than X in an acidic environment, has an atomic percentage in the alloy of platinum is from 20.5-40 at %, of X is from 40.5-78.5 at % X and of Y is from 1-19.5 at %. | 08-15-2013 |