公开(公告)号：US20240328022A1

公开(公告)日：2024-10-03

申请号：US18743648

申请日：2024-06-14

申请人： Kunming University of Science and Technology

发明人： Jia Yang ,  Kanwen Hou ,  baohong Wei ,  Jiancheng Qian ,  Baoqiang Xu ,  Bin Yang ,  Dachun Liu ,  Wenlong Jiang ,  Yong Deng ,  Yifu Li ,  Yang Tian ,  Heng Xiong ,  Fei Wang ,  Qingchun Yu ,  Hongwei Yang

IPC分类号： C25C7/02 ,  C25C1/02 ,  C25C1/10 ,  C25C1/12 ,  C25C1/14 ,  C25C1/16 ,  C25C1/18 ,  C25C1/22

CPC分类号： C25C7/02 ,  C25C1/02 ,  C25C1/10 ,  C25C1/12 ,  C25C1/14 ,  C25C1/16 ,  C25C1/18 ,  C25C1/22

摘要： This invention presents an electrochemical metallurgical technique for extracting metals and sulfur from metal sulfides, offering an adjustable composition and mechanical properties during electrode preparation. The metal sulfide anode, submerged in an electrolyte with a cathode made of materials like titanium, copper, stainless steel, lead, zinc, aluminum or graphite, undergoes electrolysis. This process oxidizes sulfur in the metal sulfide to the anode and releases metal ions into the electrolyte, where they're reduced at the cathode. The method yields metal at the cathode and sulfur at the anode, with minimal environmental impact, low investment, and straightforward process.

公开(公告)号：US20240313284A1

公开(公告)日：2024-09-19

申请号：US18122621

申请日：2023-03-16

申请人： Lyten, Inc.

发明人： Jesse Baucom ,  Sanjeev Kolli

IPC分类号： H01M10/54 ,  B01D61/46 ,  C25C1/02

CPC分类号： H01M10/54 ,  B01D61/44 ,  B01D61/46 ,  B01D61/58 ,  B01D69/02 ,  C01D15/08 ,  C22B3/46 ,  C22B26/12 ,  C25C1/02 ,  B01D2313/345 ,  B01D2317/02 ,  B01D2317/04 ,  B01D2317/08 ,  B01D2325/42 ,  Y02P10/20

摘要： The presently disclosed concepts relate to green battery recycling systems and critical mineral reclamation and refinement. Alkali metal extraction (and in particular lithium extraction) is accomplished using a solid electrolyte membrane in combination with electrodes in a redox configuration. The energy used to initially extract lithium from a feed solution is stored as electrochemical energy, which electrochemical energy is reclaimed in subsequent reclamation processing steps. This reclamation may further allow for lithium to be converted to lithium carbonate or lithium hydroxide, or purified to a minimum purity of 99.9% lithium by mass. These extraction and reclamation steps may performed in continuous ultra-efficient ongoing cycles. Since irrecoverable energy losses incurred in each cycle are limited to negligible amounts of joule heating of the system components and feed solution, the system can be sustainably powered using locally-generated renewable energy, which in turn, provides for a green and sustainable solution for lithium recycling.

公开(公告)号：US12018397B2

公开(公告)日：2024-06-25

申请号：US17386867

申请日：2021-07-28

申请人： ALPHA-EN CORPORATION

发明人： Lawrence Ralph Swonger

IPC分类号： C25D3/42 ,  C03C3/21 ,  C03C4/18 ,  C03C10/00 ,  C25C1/02 ,  C25D7/06 ,  C25D17/00 ,  C25D17/02 ,  C25D17/10 ,  C25D17/12 ,  C25D21/02 ,  C25D21/18

CPC分类号： C25D3/42 ,  C03C3/21 ,  C03C4/18 ,  C03C10/00 ,  C25C1/02 ,  C25D7/0642 ,  C25D17/002 ,  C25D17/005 ,  C25D17/02 ,  C25D17/10 ,  C25D17/12 ,  C25D21/02 ,  C25D21/18

摘要： A decoupled plating system is provided for producing lithium. In a general embodiment, the present disclosure provides a feed tank configured to supply a lithium-rich aqueous electrolyte stream, a plating tank that is configured to receive an organic electrolyte and plate out lithium metal from that organic electrolyte, and one or more lithium replenishment cells configured to receive both electrolytes, keep them separated, and selectively move lithium ions from the aqueous electrolyte into the spent organic electrolyte stream. The present system and process can advantageously reduce operating costs and/or improve energy efficiency in production of lithium metal and associated products.

公开(公告)号：US11779886B1

公开(公告)日：2023-10-10

申请号：US17948055

申请日：2022-09-19

申请人： Lyten, Inc.

发明人： Jesse Baucom ,  Sanjeev Kolli

IPC分类号： C25C1/00 ,  B01D61/46 ,  B01D71/02 ,  B01D69/02 ,  H01G11/56 ,  H01M10/54 ,  C25C1/02 ,  C25C7/04 ,  H01M10/052 ,  H01M10/0562

CPC分类号： B01D61/461 ,  B01D69/02 ,  B01D71/02 ,  B01D71/024 ,  B01D71/0215 ,  C25C1/02 ,  C25C7/04 ,  H01G11/56 ,  H01M10/54 ,  B01D2313/345 ,  B01D2325/38 ,  H01M10/052 ,  H01M10/0562

摘要： The presently disclosed concepts relate to improved techniques for alkali metal extraction (and in particular lithium), using a solid electrolyte membrane. By using a solid electrolyte embedded in a matrix, alkali metal (such as lithium) can be more effectively separated from feed solutions. Additionally, energy used to initially extract lithium from a feed solution may be stored as electrochemical energy, which in turn, may be discharged when lithium is depleted from the electrode. This discharged energy may therefore be reclaimed and reused to extract additional lithium.

公开(公告)号：US11649170B2

公开(公告)日：2023-05-16

申请号：US16988054

申请日：2020-08-07

申请人： TERRALITHIUM LLC

发明人： Stephen Harrison

IPC分类号： C01D15/08 ,  C01D9/04 ,  C01B9/02 ,  C01D7/07 ,  C22B26/12 ,  C25B1/14 ,  C01D15/02 ,  C25C1/02 ,  C25C7/04

CPC分类号： C01D15/08 ,  C01B9/02 ,  C01D7/07 ,  C01D9/04 ,  C01D15/02 ,  C22B26/12 ,  C25B1/14 ,  C25C1/02 ,  C25C7/04 ,  C01P2006/80

摘要： This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines. The method can include a silica removal step, capturing lithium chloride, recovering lithium chloride, supplying lithium chloride to an electrochemical cell and producing lithium hydroxide, contacting the lithium hydroxide with carbon dioxide to produce lithium carbonate.

公开(公告)号：US11555251B2

公开(公告)日：2023-01-17

申请号：US17416413

申请日：2019-12-19

申请人： Mangrove Water Technologies LTD.

发明人： Saad Dara ,  Benjamin Zahiri

IPC分类号： C01D7/00 ,  C25B1/14 ,  C25B9/23 ,  C25B11/032 ,  C25B11/052 ,  C25B9/21 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/18 ,  C02F1/461 ,  C02F1/469 ,  C25B1/16 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10

摘要： In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.

公开(公告)号：US11466375B1

公开(公告)日：2022-10-11

申请号：US17002834

申请日：2020-08-26

申请人： Consolidated Nuclear Security, LLC

发明人： John W. Freiderich

IPC分类号： C25C1/00 ,  C25C1/02 ,  C25C7/04

摘要： A method and electrolysis cell for producing lithium metal at a low temperature. The method includes combining (i) phenyl trihaloalkyl sulfone and (ii) an inorganic cation bis(perhaloalkylsulfonyl)imide, an inorganic cation bis(halosulfonyl)imide, an inorganic cation bis(perhaloalkylsulfonyl)imidic acid, or an inorganic cation bis(halosulfonyl)imidic acid in a weight ratio of (i) to (ii) about 10:90 to about 60:40 to provide a non-aqueous electrolyte composition. A lithium compound selected from the group consisting of LiOH, Li2O and Li2CO3 is dissolved in the electrolyte composition to provide a soluble lithium doped electrolyte composition. Power is applied to the electrolyte composition to form lithium metal on a cathode of an electrolysis cell. The lithium metal is separated from the cathode has a purity of at least about 95 wt. %.

公开(公告)号：US20220010447A1

公开(公告)日：2022-01-13

申请号：US17386867

申请日：2021-07-28

申请人： ALPHA-EN CORPORATION

发明人： Lawrence Ralph Swonger

IPC分类号： C25D3/42 ,  C25D7/06 ,  C25D17/02 ,  C03C10/00 ,  C25D17/00 ,  C25D21/18 ,  C25C1/02 ,  C25D21/02 ,  C03C3/21 ,  C03C4/18 ,  C25D17/12 ,  C25D17/10

摘要： A decoupled plating system is provided for producing lithium. In a general embodiment, the present disclosure provides a feed tank configured to supply a lithium-rich aqueous electrolyte stream, a plating tank that is configured to receive an organic electrolyte and plate out lithium metal from that organic electrolyte, and one or more lithium replenishment cells configured to receive both electrolytes, keep them separated, and selectively move lithium ions from the aqueous electrolyte into the spent organic electrolyte stream. The present system and process can advantageously reduce operating costs and/or improve energy efficiency in production of lithium metal and associated products.

公开(公告)号：US10718057B1

公开(公告)日：2020-07-21

申请号：US15925007

申请日：2018-03-19

申请人： Consolidated Nuclear Security, LLC

发明人： John W. Freiderich

IPC分类号： C25C3/02 ,  C25C1/02

摘要： A method and electrolysis cell for producing lithium metal at a low temperature. The method includes combining (i) phenyl trihaloalkyl sulfone and (ii) an organic cation bis(trihaloalkylsulfonyl)imide or organic cation bis(trihalosulfonyl)imidic acid in a weight ratio of (i) to (ii) about 10:90 to about 60:40 to provide a non-aqueous electrolyte composition. A lithium compound selected from the group consisting of LiOH, Li2O and Li2CO3 is dissolved in the electrolyte composition to provide a soluble lithium ion species in the electrolyte composition. Power is applied to the electrolyte composition to form lithium metal on a cathode of an electrolysis cell. The lithium metal is separated from the cathode has a purity of at least about 95 wt. %.

公开(公告)号：US20200149171A1

公开(公告)日：2020-05-14

申请号：US16741588

申请日：2020-01-13

申请人： Enlighten Innovations Inc.

发明人： John Howard GORDON

IPC分类号： C25B9/18 ,  C25B1/00 ,  C25B13/08 ,  C25C7/08 ,  C25C7/04 ,  C25C7/02 ,  C25C1/02 ,  C25C7/00

摘要： 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.