MULTIPURPOSE ELECTROLYTIC DEVICE (MPED) FOR FORCED OR SPONTANEOUS ELECTROLYTIC PROCESSES, WITH INDEPENDENT ELECTROLYTES

    公开(公告)号:US20180327915A1

    公开(公告)日:2018-11-15

    申请号:US15525778

    申请日:2015-11-23

    Applicant: PROTECH SPA

    Abstract: Multipurpose electrolytic device (EMPD) for forced or spontaneous electrolytic processes, which incorporates selective and unidirectional ion exchange membranes in order to separate between two or more compartments and allow electrical conductivity therebetween, with independent electrolytes for controlled electrolytic ion transformation, regardless of the chemical composition of the electrolyte containing the element of interest, with high faradaic efficiency and high energy performance. The invention also relates to a method. The device can be used for processes such as metal electrowinning (EW), metal electrorefining, electrooxidation (EOXI) and electroreduction (ERED) of ionic species. The device uses two independent, energetically suitable electrolytes, which allow controlled electrolytic ion transformation, with high faradaic efficiency and high energy performance, unlike current forced electrolysis methods, which operate with a common electrolyte. The device can be used in any aqueous medium, for example an acid environment, such as sulphuric, hydrochloric or other acid, a caustic-soda-based alkaline, or ammonium, thiocyanate or thiosulfate salts, with or without the presence of organic reactants.

    METHOD AND APPARATUS FOR RECOVERING METALS AND SULFUR FROM FEED STREAMS CONTAINING METAL SULFIDES AND POLYSULFIDES

    公开(公告)号:US20180187317A1

    公开(公告)日:2018-07-05

    申请号:US15393717

    申请日:2016-12-29

    Abstract: A system to remove sodium and Sulfur from a feed stream containing alkali metal sulfides and polysulfides in addition to heavy metals. The system includes an electrolytic cell having an anolyte compartment housing an anode in contact with an anolyte. The anolyte includes alkali metal sulfides and polysulfides dissolved in a polar organic solvent. The anolyte includes heavy metal ions. A separator includes an ion conducting membrane and separates the anolyte compartment from a catholyte compartment that includes a cathode in contact with a catholyte. The catholyte includes an alkali ion-conductive liquid. A power source applies a voltage to the electrolytic cell high enough to reduce the alkali metal and oxidize Sulfur ions to allow recovery of the alkali metal and elemental sulfur. The ratio of sodium to Sulfur is such that the open circuit potential of the electrolytic cell is greater than about 2.3V.

    ELECTROCHEMICAL CELL FOR RECOVERY OF METALS FROM SOLID METAL OXIDES
    23.
    发明申请
    ELECTROCHEMICAL CELL FOR RECOVERY OF METALS FROM SOLID METAL OXIDES 审中-公开
    用于从固体金属氧化物中回收金属的电化学细胞

    公开(公告)号:US20160032473A1

    公开(公告)日:2016-02-04

    申请号:US14449783

    申请日:2014-08-01

    CPC classification number: C25C3/34 C25C7/02 C25C7/04

    Abstract: An electrochemical cell and methods of using the electrochemical cell are described that can be utilized for the recovery of metals from metal oxides. The cell includes a first electrode that includes a solid metal oxide, an electrolyte including an oxygen ion conductor, and a second electrode space apart from the electrolyte by an oxygen ion conducting membrane. Upon reduction of the metal oxide, solid metal is formed that replaces the metal oxide of the electrode and provides for simplified recovery of the metal from the metal oxide. The membrane protects the second electrode from corrosion and degradation from the electrolyte, increasing the life of the cell.

    Abstract translation: 描述了可用于从金属氧化物回收金属的电化学电池和使用电化学电池的方法。 电池包括包含固体金属氧化物的第一电极,包含氧离子导体的电解质和通过氧离子导电膜与电解质分开的第二电极空间。 在金属氧化物还原时,形成固体金属,其代替电极的金属氧化物并且简化金属从金属氧化物的回收。 膜保护第二电极免受电解质的腐蚀和降解,增加电池的使用寿命。

    Porous sheet, separator for electrochemical element, and method for manufacturing porous sheet
    25.
    发明授权
    Porous sheet, separator for electrochemical element, and method for manufacturing porous sheet 有权
    多孔片,电化学元件用隔膜,多孔片制造方法

    公开(公告)号:US08202406B2

    公开(公告)日:2012-06-19

    申请号:US12664578

    申请日:2008-06-13

    Abstract: A porous sheet which has good balance between electrolytic solution permeability and dry-up resistance, is superior in high-rate property, and is suitable for a separator for an electrochemical element, and a manufacturing method thereof are provided.The present invention relates to a porous sheet comprising a porous substrate containing non-fibrillar fibers having an average fiber diameter of 0.01-10 μm and a net-like structural body composed of a polymer, the net-like structural body having penetrating pores with a pore diameter of 0.01-10 μm, wherein the net-like structural body is present at the surface and at the internal of the porous substrate and the non-fibrillar fibers having an average fiber diameter of 0.01-10 μm and the net-like structural body are entangled; to a separator for an electrochemical element comprising the porous sheet; and to a method for manufacturing the porous sheet.

    Abstract translation: 在电解液渗透性和耐干燥性之间具有良好的平衡的多孔片材的高速率性能优异,并且适用于电化学元件用隔膜,其制造方法。 本发明涉及一种多孔片材,其包含含有平均纤维直径为0.01-10μm的非纤维纤维的多孔基材和由聚合物构成的网状结构体,所述网状结构体具有贯穿孔 孔直径为0.01-10μm,其中网状结构体存在于多孔基材的表面和内部,非纤维纤维的平均纤维直径为0.01-10μm,网状结构体 身体纠缠不清 涉及一种用于包含所述多孔片材的电化学元件的隔板; 以及制造多孔片材的方法。

    ELECTROCHEMICAL CELL
    26.
    发明申请
    ELECTROCHEMICAL CELL 有权
    电化学细胞

    公开(公告)号:US20110024295A1

    公开(公告)日:2011-02-03

    申请号:US12533258

    申请日:2009-07-31

    CPC classification number: H01M8/04291 H01M8/0245 H01M8/04164 H01M8/04171

    Abstract: An electrochemical cell having two or more diffusion bonded layers, which demonstrates a high degree of ruggedness, reliability, efficiency and attitude insensitiveness, is provided. The novel cell structure simplifies construction and operation of these cells. Also provided is a method for passive water removal from these cells. The inventive cell, as well as stacks made using these cells, is suitable for use in applications such as commercial space power systems, long endurance aircraft, undersea power systems, remote backup power systems, and regenerative fuel cells.

    Abstract translation: 提供了具有两个或更多个扩散接合层的电化学电池,其表现出高度的坚固性,可靠性,效率和态度不敏感性。 新颖的细胞结构简化了这些细胞的构建和操作。 还提供了一种从这些细胞中被动除水的方法。 本发明的电池以及使用这些电池制成的电池组适用于商业空间电力系统,长寿命飞机,海底电力系统,远程备用电力系统和再生燃料电池等应用。

    Minimising carbon transfer in an electrolytic cell
    28.
    发明授权
    Minimising carbon transfer in an electrolytic cell 有权
    最小化电解槽中的碳转移

    公开(公告)号:US07628904B2

    公开(公告)日:2009-12-08

    申请号:US10531650

    申请日:2003-10-15

    Abstract: An electrochemical cell for electrochemical reduction of a metal oxide in a solid state is disclosed. The cell includes a molten electrolyte (14), an anode (10) formed from carbon in contact with the electrolyte, a cathode (20) formed at least in part from the metal oxide in contact with the electrolyte, and a membrane (28) that is permeable to oxygen anions and is impermeable to carbon in ionic and non-ionic forms positioned between the cathode and the anode to thereby prevent migration of carbon from the anode to the cathode. The membrane includes a body (32) and a lining (34) on the surface of the body on the cathode side of the membrane. The lining is formed from a material that is inert with respect to dissolved metal in the electrolyte and is impermeable to the dissolved metal. An electrochemical method based on the cell is also disclosed.

    Abstract translation: 公开了一种用于电化学还原固态金属氧化物的电化学电池。 电池包括熔融电解质(14),由与电解质接触的碳形成的阳极(10),至少部分地从与电解质接触的金属氧化物形成的阴极(20)和膜(28) 其对氧阴离子是可渗透的,并且对位于阴极和阳极之间的离子和非离子形式的碳是不可渗透的,从而防止碳从阳极迁移到阴极。 膜在膜的阴极侧的主体表面上包括主体(32)和衬里(34)。 衬里由对电解质中溶解的金属是惰性的材料形成,并且对于溶解的金属是不可渗透的。 还公开了一种基于电池的电化学方法。

    Electrolyte support member for high differential pressure electrochemical cell
    29.
    发明申请
    Electrolyte support member for high differential pressure electrochemical cell 失效
    用于高压差电化学电池的电解质支撑构件

    公开(公告)号:US20050133364A1

    公开(公告)日:2005-06-23

    申请号:US10739650

    申请日:2003-12-18

    Applicant: Andrei Leonida

    Inventor: Andrei Leonida

    Abstract: A support member is useful for supporting membranes such as solid polymer electrolyte ion exchange membranes such as those used in electrochemical cell applications. The support member has a first lattice pattern on a first side of a single piece of material. A second lattice pattern on a second side of the single piece of material cooperates with the first lattice pattern to establish a plurality of flow passages across the material. Each lattice pattern has a corresponding plurality of recesses that extend partway through the material and overlapping portions of the recesses define the flow passages. In a disclosed example, the monolithic support member lattice patterns are established using chemical etching.

    Abstract translation: 支撑构件可用于支撑膜,例如固体聚合物电解质离子交换膜,例如用于电化学电池应用中的那些。 支撑构件在单件材料的第一侧上具有第一格子图案。 单个材料的第二侧上的第二格子图案与第一格子图案配合以建立穿过该材料的多个流动通道。 每个格子图案具有相应的多个凹槽,该凹槽在材料的中途延伸,并且凹槽的重叠部分限定流动通道。 在公开的示例中,使用化学蚀刻来建立整体式支撑构件格子图案。

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