公开(公告)号：US11384444B2

公开(公告)日：2022-07-12

申请号：US17433613

申请日：2020-12-11

Applicant: SOUTHWEST UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Wenkun Zhu ,  Rong He ,  Yi Li ,  Tao Duan ,  Jia Lei ,  Tao Chen ,  Fan Yang

IPC: C25C7/06 ,  C01G15/00 ,  C25C7/02 ,  C25C1/22

Abstract: A method for electrochemical extraction of uranium from seawater using an oxygen vacancy (OV)-containing metal oxide includes the following steps: adding glycerin to a solution of indium nitrate in isopropanol, transferring a resulting mixture to a reactor, and conducting reaction to obtain a spherical indium hydroxide solid; dissolving the solid in deionized water, transferring a resulting solution to the reactor, and conducting reaction to obtain a flaky indium hydroxide solid; calcining the solid to obtain calcined OV-containing In2O3-x; adding the In2O3-x to ethanol, and adding a membrane solution; coating a resulting solution uniformly on carbon paper, and naturally drying the carbon paper; clamping dried carbon paper with a gold electrode for being used as a working electrode for a three-electrode system; and adding simulated seawater to an electrolytic cell, placing the three-electrode system in the simulated seawater, and stirring the simulated seawater for electrolysis to extract uranium from the seawater.

公开(公告)号：US20220216495A1

公开(公告)日：2022-07-07

申请号：US17567966

申请日：2022-01-04

Applicant: Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.O.C

Inventor： Chin-Lung Hsieh ,  Cian-Tong Lu ,  Ya-Hsin Chang ,  Kan-Lin Hsueh

IPC: H01M8/18 ,  H01M10/38 ,  C25C1/22 ,  C25C7/04 ,  C25C7/02 ,  H01M8/08

Abstract: Disclosed are an electrolytic reduction system of a vanadium electrolyte and a method for producing the electrolyte. The electrolytic reduction system includes a separating device and an electrolytic tank. The separating device is configured to separate a mixture consisting of a vanadium pentoxide (V2O5) solid and a sulfate acid solution, thereby obtaining a vanadium solution from a liquid discharging port of the separating device and a vanadium solid from a solid discharging port. The vanadium solution includes pentavalent vanadium ions. The electrolytic tank connects to the liquid discharging port of the separating device to contain the vanadium solution. In the method for producing the vanadium electrolyte, other chemical reagents are unnecessarily to be added into the mixture, and the vanadium solution is subjected to an electrolytic reduction process, such that the pentavalent vanadium ions are reduced to tetravalent vanadium ions and trivalent vanadium ions in the electrolytic tank.

公开(公告)号：US20220149389A1

公开(公告)日：2022-05-12

申请号：US17581218

申请日：2022-01-21

Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

Inventor： Wolfgang Schade ,  Andreas Gabler

IPC: H01M4/94 ,  H01M8/0247 ,  H01M4/96 ,  H01M4/42 ,  H01M8/1004 ,  H01M12/08 ,  H01M4/02 ,  H01M4/90 ,  C25B11/051 ,  C25B11/073 ,  C25C7/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M4/70 ,  H01M4/86 ,  H01M4/88 ,  H01M4/92

Abstract: A gas diffusion electrode may be provided comprising an electron conducting layer with a first side and an opposite second side, wherein the first side is provided with a microstructuring, wherein the gas diffusion electrode additionally has a hydrophobic membrane with a first side and an opposite second side, wherein the second side of the membrane is arranged on the first side of the electron conducting layer. A battery or an accumulator or an electrolyser or a galvanic cell may be provided with a gas diffusion electrode of this type.

公开(公告)号：US11180863B2

公开(公告)日：2021-11-23

申请号：US16612739

申请日：2019-03-27

Applicant: University of Science and Technology Beijing ,  Beijing Institute of Technology

Inventor： Shuqiang Jiao ,  Zhe Wang ,  Handong Jiao

IPC: C25C3/26 ,  C25C3/28 ,  C25C7/00 ,  C25C7/02

Abstract: A device and a method for preparing pure titanium by electrolysis-chlorination-electrolysis, wherein the device includes a first electrolytic cell, a second electrolytic cell, a chlorination reactor and guide tubes. The Cl2 generated at the anode of the first electrolytic cell is introduced into a chlorination reactor containing the TiCxOy or TiCxOyNz raw materials via a guide tube, and a chlorination is carried out to generate TiCl4 gas at a temperature of 200° C.-600° C. The TiCl4 gas passes through a guide tube into a cathode of the second electrolytic cell, and then an electrolysis is performed to obtain the high-purity titanium in the second electrolytic cell. At the same time, the Cl2 generated at the anode of the second electrolytic cell is recycled into the chlorination reactor in the first electrolytic cell to continue to participate in the chlorination of TiCxOy or TiCxOyNz.

公开(公告)号：US20210324534A1

公开(公告)日：2021-10-21

申请号：US17362290

申请日：2021-06-29

Applicant: INDUSTRIE DE NORA S.P.A.

Inventor： Alice CALDERARA ,  Luciano IACOPETTI ,  Fabio TIMPANO

IPC: C25D17/10 ,  C25D3/06 ,  C25C7/02 ,  C25C1/10 ,  C25B11/093 ,  C25D3/04

Abstract: An electrode for electrolytic processes, in particular to an anode suitable for oxygen evolution having a valve metal substrate, a catalytic layer, a protection layer consisting of oxides of valve metals interposed between the substrate and the catalytic layer and an outer coating of oxides of valve metals. The electrode is particularly suitable for processes of cathodic electrodeposition of chromium from an aqueous solution containing Cr (III).

公开(公告)号：US11150067B1

公开(公告)日：2021-10-19

申请号：US16688163

申请日：2019-11-19

Applicant: The University of Massachusetts

Inventor： Chen-Lu Yang

IPC: F42B33/06 ,  C25C7/00 ,  C25C1/12 ,  C25C5/02 ,  C25C7/02

Abstract: In a method for electrochemical ammunition disposal and material recovery, ammunition cartridges are placed in an acidic aqueous solution that is in contact with a cathode and an anode. The ammunition cartridges have a casing that includes an alloy of copper and zinc. The ammunition cartridges are agitated in the acidic aqueous solution as a voltage is applied between the anode and the cathode. The applied voltage is effective to oxidize and dissolve zinc from the copper-zinc alloy. Copper metal derived from the alloy can be recovered as a solid, and zinc ion derived from the alloy can be recovered as a solution.

公开(公告)号：US11136682B2

公开(公告)日：2021-10-05

申请号：US15527397

申请日：2015-06-08

Applicant: NOVALUM SA

Inventor： Rene Von Kaenel ,  Gualtiero Spinetti

IPC: C25C3/16 ,  C25C7/02

Abstract: The invention relates to an electrolytic cell (1) for the production of aluminium (2) including collector bars structure modifications (13,14,15,16) under the cathode (4), namely a copper collector bar held in a U-shaped profile or directly embedded into the cathode. This leads to an optimized current distribution in the liquid aluminium metal (2) and/or inside the carbon cathode allowing for operating the cell at lower voltage. The lower voltage results from either a lower anode to cathode distance (ACD), and/or to lower voltage drop inside the carbon cathode from liquid metal to the end of the collector bar.

公开(公告)号：US11078584B2

公开(公告)日：2021-08-03

申请号：US15943171

申请日：2018-04-02

Applicant: Alcoa USA Corp.

Inventor： Xinghua Liu

IPC: C25C3/08 ,  C25C3/12 ,  C25C7/02

Abstract: In some embodiments, an exemplary electrolytic cell includes: a cathode structure disposed within an electrolysis cell, wherein the electrolysis cell is configured to produce metal on a surface of the cathode structure, wherein the cathode structure is configured to fit along a floor of the electrolysis cell, wherein the cathode structure has a sloped surface when compared to a generally horizontal plane, and wherein via the sloped surface, the cathode structure is configured to drain a metal product from the sloped surface towards a lower end of the cathode structure.

公开(公告)号：US20210230759A1

公开(公告)日：2021-07-29

申请号：US17155184

申请日：2021-01-22

Applicant: Vanadiumcorp Resources Inc.

Inventor： Francois Cardarelli

IPC: C25C1/06 ,  C01B33/12 ,  C01G23/00 ,  C01G23/047 ,  C01G31/00 ,  C01G31/02 ,  C01G49/14 ,  C25C7/02

Abstract: The present disclosure broadly relates to a process for recovering vanadium, iron, titanium and silica values from vanadiferous feedstocks. More specifically, but not exclusively, the present disclosure relates to a metallurgical process in which vanadium, iron, titanium and silica values are recovered from vanadiferous feedstocks such as vanadiferous titanomagnetite, iron ores, vanadium slags and industrial wastes and by-products containing vanadium. The process broadly comprises digesting the vanadiferous feedstocks into sulfuric acid thereby producing a sulfation cake; dissolving the sulfation cake and separating insoluble solids thereby producing a pregnant solution; reducing the pregnant solution thereby producing a reduced pregnant solution; and crystallizing ferrous sulfate hydrates from the reduced pregnant solution, producing an iron depleted reduced solution. The process further comprises removing titanium compounds from the iron depleted reduced solution thereby producing a vanadium-rich pregnant solution; concentrating vanadium and recovering vanadium products and/or a vanadium electrolyte.

公开(公告)号：US11001932B2

公开(公告)日：2021-05-11

申请号：US15546343

申请日：2016-01-26

Applicant: Outokumpu Oyj

Inventor： Jan-Olof Maxe ,  Peter Bamforth ,  Timo Piitulainen ,  Sara Randström ,  Henrik Ahrman ,  Lennart Johansson

IPC: C25C7/02 ,  C25C1/08 ,  C25C1/12 ,  C25C1/20 ,  C25C7/08 ,  B24C1/06 ,  B21B1/22 ,  B24C1/10 ,  C22C38/00 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C23F1/00

Abstract: The invention relates to a method for manufacturing a plate material which is used in the electrochemical process of metal as a part of a cathode on which surface a metal is deposited. The surface roughness of the plate material for the adhesion between the metal deposit and the plate material is achieved with at least one treatment in a coil processing line.