Patent application number | Description | Published |
20140178792 | Electrochemical Device Including Amorphous Metal Oxide on Graphene - In one or more embodiments, an electrochemical device includes a catalyst promoter including an amorphous metal oxide, the amorphous metal oxide being of an amount greater than 50 percent by weight of the total weight of the substrate, and a substrate including graphene and supporting the substrate. | 06-26-2014 |
20140178801 | Electrochemical Device Including Amorphous Metal Oxide - In one or more embodiments, an electrochemical device includes a substrate having a substrate surface; an amorphous metal oxide layer supported on the substrate surface; and a noble metal catalyst supported on the amorphous metal oxide layer to form a catalyst layer. The amorphous metal oxide layer may contact only 25 to 75 percent of the substrate surface. The amorphous metal oxide layer may include less than 10 weight percent of crystalline metal oxide. In certain instances, the amorphous metal oxide layer is substantially free of crystalline metal oxide. | 06-26-2014 |
20140220475 | Catalyst Assembly Including an Intermetallic Compound of Iridium And Tungsten - A catalyst assembly having a substrate including an intermetallic compound of W and Ir. The weight ratio of W to Ir is in a range between a first ratio and a second ratio. A catalyst includes at least one noble metal is supported on and contacts the substrate. The first ratio may be in the range of 48:52 and the second ratio may be in the range of 51:49. | 08-07-2014 |
20150200393 | Composition for Reducing Moisture in a Battery Electrolyte - In at least one embodiment, a lithium-ion battery is provided comprising a positive electrode, a negative electrode, an electrolyte, and a separator situated between the electrodes. At least one of the electrodes may include a proton absorbing material. The proton absorbing material may be an atomic intermetallic material including a proton absorbed state. The proton absorbing material may react with protons in the electrolyte to reduce moisture formation and cathode degradation in the battery. The proton absorbing material may absorb at least 0.5 wt. % hydrogen and may be present in the anode and/or cathode in an amount from 0.01 to 5 wt. %. | 07-16-2015 |
20150375208 | METAL OXIDE STABILIZED PLATINUM-BASED ORR CATALYST - In at least one embodiment, an oxygen reduction reaction catalyst (ORR) and a method for making the catalyst are provided. The method may include depositing a metal oxide on a graphitized carbon or graphene substrate. A platinum catalyst may then be deposited over the metal oxide to provide an ORR catalyst for use in, for example, a PEMFC. The metal oxide may be niobium oxide and may have an amorphous structure. The platinum catalyst may form a thin, electrically interconnected network structure overlaying the metal oxide. The ORR catalyst may be prepared by alternating the deposition of the metal oxide and the platinum catalyst, for example, using physical vapor deposition. The ORR catalyst may have a specific activity of at least 1,000 μA/cm | 12-31-2015 |
20160028093 | Oxygen Reduction Reaction Catalyst Having a Non-Conductive Substrate - An oxygen reduction reaction catalyst (ORR) and a method for making the catalyst are provided. The method may include depositing (e.g., by PVD) conductive catalyst material onto a non-conductive substrate, such as particles or powder, to form an intermediate ORR catalyst. The intermediate ORR catalyst may then be heat treated and another deposition process may be performed to form a thin, electrically interconnected catalyst network layer overlying the non-conductive substrate. The catalyst material may include, for example, platinum, gold, or other platinum group or noble metals, or alloys thereof. The non-conductive substrate may be a ceramic, for example, yttria-stabilized zirconia (YSZ). | 01-28-2016 |
20160093425 | High Temperature Hybrid Permanent Magnet - In at least one embodiment, a hybrid permanent magnet is disclosed. The magnet may include a plurality of anisotropic regions of a Nd—Fe—B alloy and a plurality of anisotropic regions of a MnBi alloy. The regions of Nd—Fe—B alloy and MnBi alloy may be substantially homogeneously mixed within the hybrid magnet. The regions of Nd—Fe—B and MnBi may have the same or a similar size. The magnet may be formed by homogeneously mixing anisotropic powders of MnBi and Nd—Fe—B, aligning the powder mixture in a magnetic field, and consolidating the powder mixture to form an anisotropic hybrid magnet. The hybrid magnet may have improved coercivity at elevated temperatures, while still maintaining high magnetization. | 03-31-2016 |
20160111727 | Metal-Ion Battery with Offset Potential Material - A metal-ion battery includes an anode assembly and a cathode assembly ionically coupled by an electrolyte. The anode assembly includes a current collector and an anode material capable of intercalation of metal-ions. When the battery is at rest, ionic transfer between the anode and cathode at a minimum and the anode assembly potential with respect to the electrolyte may increase. The increased potential may exceed the reduction potential of the current collector material causing ions to erode from the current collector and contaminate the cathode. The use of a metal, metal alloy or metal compound reduces the rest potential and erosion of the current collector. For example, a lithium foil physically in contact with a copper current collector in a lithium-ion battery reduces the overall anode potential thereby reducing copper dissolution. | 04-21-2016 |