ATOMICALLY DISPERSED PLATINUM-GROUP METAL-FREE CATALYSTS AND METHOD FOR SYNTHESIS OF THE SAME

    公开(公告)号:US20220190356A1

    公开(公告)日:2022-06-16

    申请号:US17531461

    申请日:2021-11-19

    IPC分类号: H01M4/90

    摘要: Atomically dispersed platinum-group metal-free catalyst and method for synthesizing the same. According to one embodiment, the catalyst is made by a method in which, in a first step, a metal oxide/zeolitic imidazolate frameworks (ZIF) composite is formed by combining (i) nanoparticles of an oxide of at least one of iron, cobalt, nickel, manganese, and copper, (ii) a hydrated zinc salt, and (iii) an imidazole. Then, in a second step, the metal oxide/ZIF composite is thermally activated, i.e., carbonized, to form an M-N—C catalyst. Thereafter, the M-N—C catalyst may be mixed with a quantity of ammonium chloride, and then the M-N—C/NH4Cl mixture may be pyrolyzed. The foregoing NH4Cl treatment may improve the intrinsic activity of the catalyst. Then, a thin layer of nitrogen-doped carbon may be added to NH4Cl-treated M-N—C catalyst by chemical vapor deposition (CVD). Such CVD treatment may improve the stability of the catalyst.

    Waterless electrochemical transdermal alcohol sensor and wearable transdermal alcohol sensor device

    公开(公告)号:US11278222B2

    公开(公告)日:2022-03-22

    申请号:US15894255

    申请日:2018-02-12

    申请人: Giner, Inc.

    摘要: Waterless electrochemical transdermal alcohol sensor. In one embodiment, the sensor includes a proton exchange membrane imbibed with an imbibing liquid that includes at least one cationic substance that is liquid at room temperature. As examples, the cationic substance may be one or more ionic liquids with an imidazolium, phosphonium, ammonium, pyridinium, pyrrolidinium, or sulfonium backbone structure. The imbibing of the proton exchange membrane with the cationic substance obviates the need for the periodic addition of water to the electrochemical cell. The sensor additionally includes a sensing electrode, which is bonded to one side of the proton exchange membrane, and a counter electrode and a reference electrode, both of which are bonded to the opposite side of the proton exchange membrane. The sensor may be incorporated into a wearable transdermal alcohol sensor device, which, in turn, may be incorporated into a system for detecting transdermal alcohol.

    System for modifying the atmosphere within an enclosed space and incubator system including the same
    25.
    发明授权
    System for modifying the atmosphere within an enclosed space and incubator system including the same 有权
    用于改变封闭空间内的气氛的系统和包括其的培养箱系统

    公开(公告)号:US08083821B2

    公开(公告)日:2011-12-27

    申请号:US12082975

    申请日:2008-04-14

    IPC分类号: H01M8/18

    摘要: System for modifying the chemical composition of atmosphere within an enclosed space and incubator system including such a system. The concentration of oxygen within the enclosed space may be either increased or decreased using an electrochemical device. The concentration of carbon dioxide within the enclosed space may be increased using an electrochemical or chemical device. As necessary, purging of the system with ambient air can be a part of the process of controlling the chemical composition of the atmosphere. The present invention obviates the need to use pressurized gas cylinders to supply atmospheric gases to the enclosed space.

    摘要翻译: 用于改变封闭空间内的气氛的化学成分和包括这种系统的培养箱系统的系统。 封闭空间内的氧浓度可以使用电化学装置增加或减少。 封闭空间内二氧化碳的浓度可以使用电化学或化学装置来增加。 根据需要,用环境空气清洗系统可以是控制大气化学成分的过程的一部分。 本发明避免了使用加压气瓶向封闭空间供应大气的需要。

    Electrochemical carbon dioxide sensor
    26.
    发明申请
    Electrochemical carbon dioxide sensor 有权
    电化学二氧化碳传感器

    公开(公告)号:US20060096871A1

    公开(公告)日:2006-05-11

    申请号:US11252090

    申请日:2005-10-17

    IPC分类号: G01N27/26 G01F1/64

    CPC分类号: G01N27/4074

    摘要: An electrochemical sensor is provided for the detection of carbon dioxide gas. The sensor includes a non-conductive solid substrate and at least one each of a metal oxide sensing electrode, a reference electrode and a counter electrode positioned on the substrate. A solid polymer electrolyte anion-exchange membrane is in intimate contact with the sensing electrode, reference electrode and counter electrode. The sensor is highly sensitive and selective to carbon dioxide and has very rapid response time.

    摘要翻译: 提供了一种用于检测二氧化碳气体的电化学传感器。 传感器包括非导电固体基板和位于基板上的金属氧化物感测电极,参考电极和对置电极中的至少一个。 固体聚合物电解质阴离子交换膜与感测电极,参比电极和对电极紧密接触。 传感器对二氧化碳具有高度敏感性和选择性,响应时间非常快。

    Membrane-electrode assembly for a direct methanol fuel cell
    28.
    发明授权
    Membrane-electrode assembly for a direct methanol fuel cell 失效
    用于直接甲醇燃料电池的膜 - 电极组件

    公开(公告)号:US5523177A

    公开(公告)日:1996-06-04

    申请号:US322110

    申请日:1994-10-12

    IPC分类号: H01M4/86 H01M4/92 H01M8/10

    摘要: A direct methanol fuel cell (DMFC) contains a membrane electrode assembly (MEA) including an anode porous electrode structure which can operate on a liquid or vapor methanol/water feed in the absence of a liquid electrolyte such as sulfuric acid, a proton-exchange membrane electrolyte, and a porous gas-diffusion cathode. The anode porous electrode structure includes a three-dimensional reduced (Pt--Ru)O.sub.x catalyst particle-ionomer composite structure, whereby the ionomer coats the individual particles and provides a mechanism for continuous proton transport throughout the composite structure, eliminating the need for a liquid acidic electrolyte. The partially reduced (Pt--Ru)O.sub.x particles are individually ionomer coated prior to anode fabrication. The anode porous electrode structure is subsequently bonded to one side of a thin sheet of a solid proton-conducting ionomer membrane and a cathode structure bonded to the opposite side of the membrane, to form a MEA. Insertion of the MEA into appropriate hardware results in fuel cell fabrication.

    摘要翻译: 直接甲醇燃料电池(DMFC)包含膜电极组件(MEA),其包括阳极多孔电极结构,该阳极多孔电极结构可在不存在诸如硫酸的液体电解质,质子交换 膜电解质和多孔气体扩散阴极。 阳极多孔电极结构包括三维还原(Pt-Ru)Ox催化剂颗粒 - 离聚物复合结构,由此离聚物涂覆各个颗粒并提供贯穿整个复合结构的连续质子传输的机制,从而不需要液体 酸性电解液。 在阳极制造之前,部分还原(Pt-Ru)Ox颗粒是单独的离聚物涂覆的。 随后将阳极多孔电极结构结合到固体质子传导离聚物膜和结合到膜的相对侧的阴极结构的薄片的一侧,以形成MEA。 将MEA插入适当的硬件导致燃料电池制造。

    Aqueous carbonate electrolyte fuel cell
    29.
    发明授权
    Aqueous carbonate electrolyte fuel cell 失效
    碳酸氢盐水溶液燃料电池

    公开(公告)号:US4781995A

    公开(公告)日:1988-11-01

    申请号:US39023

    申请日:1987-04-16

    申请人: Jose D. Giner

    发明人: Jose D. Giner

    IPC分类号: H01M8/08 H01M8/04

    CPC分类号: H01M8/08

    摘要: A fuel cell comprising an anode, a cathode and an aqueous carbonate electrolyte, and including means for feeding carbon dioxide to at least one of the anode and cathode during operation of the cell. The addition of carbon dioxide provides a higher current density at a working potential.

    摘要翻译: 一种燃料电池,包括阳极,阴极和碳酸氢盐水溶液,并且包括用于在电池操作期间将二氧化碳供给到至少一个阳极和阴极的装置。 二氧化碳的添加在工作电位下提供更高的电流密度。

    System and method for controlling oxygen delivery to implanted cells

    公开(公告)号:US12090300B2

    公开(公告)日:2024-09-17

    申请号:US16412281

    申请日:2019-05-14

    发明人: Simon G. Stone

    摘要: Method and system for controlling oxygen delivery to a cell implant. In one embodiment, the system includes a water electrolyzer, a cell capsule, a gas conduit, a total fluid pressure sensor, and a controller. The water electrolyzer generates gaseous oxygen with a variable output. The cell capsule includes a cell chamber adapted to hold cells. The gas conduit interconnects the water electrolyzer and the cell capsule to deliver gaseous oxygen generated by the water electrolyzer to the cell capsule. The total fluid pressure sensor is positioned at a location that provides a representative reading of the total fluid pressure within the cell chamber. The controller is electrically coupled both to the total fluid pressure sensor and to the water electrolyzer so that the controller may control the variable output of the water electrolyzer based on one or more sensed total pressure readings from the total fluid pressure sensor.