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公开(公告)号：US20230155179A1
公开(公告)日：2023-05-18
申请号：US17528719
申请日：2021-11-17
Applicant: U.S. Army DEVCOM, Army Research Laboratory
Inventor： Lin Ma , Marshall A. Schroeder , Oleg A. Borodin , Travis P. Pollard , Michael S. Ding , Kang Xu
IPC: H01M10/0569 , H01M10/0567 , H01M50/417 , H01M50/437 , H01M4/46 , H01M4/42
CPC classification number: H01M10/0569 , H01M10/0567 , H01M50/417 , H01M50/437 , H01M4/463 , H01M4/466 , H01M4/42 , H01M2300/0042
Abstract: An electrochemical cell includes a negative electrode including a metal, metal alloy, or an electrode active material that reversibly intercalates and de-intercalates cations; a positive electrode including (i) an electrode active material that reversibly intercalates and de-intercalates cations or anions, or (ii) an inert host that reversibly catalyzes an external reactant; a separator between the negative electrode and the positive electrode; and an electrolyte including one or more alcohol-based solvents, with one or more salts. The solvents may include methanol, ethanol, isopropanol, triglycerol, 2,2,2-trifluoroethanol, an organic small molecule or macromolecule that contain at least one hydroxyl (OH) group, or a combination thereof. The electrochemical cell may include a mixture of multiple alcohol-based solvents or a mixture of the one or more alcohol-based solvents with water, mixed at select ratios. The electrochemical cell may include one or more additives having a concentration range between 0.01% to 20% by weight.
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公开(公告)号：US20230261268A1
公开(公告)日：2023-08-17
申请号：US17583303
申请日：2022-01-25
Applicant: U.S. Army DEVCOM, Army Research Laboratory
Inventor： Lin Ma , Marshall A. Schroeder , Oleg A. Borodin , Travis P. Pollard , Kang Xu
CPC classification number: H01M10/38 , H01M4/366 , H01M4/485 , H01M10/365
Abstract: To improve the performance of certain multivalent metal electrodes, the electrodes can be treated prior to use in an electrochemical cell by applying a solution comprising an acid to a surface of a multivalent metal electrode, then removing excess solution comprising the acid and drying the surface of the multivalent metal electrode. The resulting electrode has an outer interphase layer comprised of a hydrated hydroxychloride comprising the multivalent metal, where the interphase layer has a thickness of less than 5 µm.
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公开(公告)号：US20230223595A1
公开(公告)日：2023-07-13
申请号：US17573178
申请日：2022-01-11
Applicant: U.S. Army DEVCOM, Army Research Laboratory
Inventor： Lin Ma , Marshall A. Schroeder , Oleg A. Borodin , Travis P. Pollard , Kang Xu
IPC: H01M10/0567
CPC classification number: H01M10/0567 , H01M2300/0025
Abstract: An electrochemical cell (such as a battery) that provides, inter alia, improved cycling efficiencies, by utilizing an electrolyte and a plurality of electrodes (including at least one metal electrode) where the electrolyte includes one or more solvents, one or more salts, and one or more additives, and at least one of the additives is a heterocyclic compound.
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公开(公告)号：US20240387882A1
公开(公告)日：2024-11-21
申请号：US18670244
申请日：2024-05-21
Applicant: U.S. Army DEVCOM, Army Research Laboratory
Inventor： Lin Ma , Marshall A. Schroeder , Oleg A. Borodin , Travis P. Pollard , Kang Xu
Abstract: To improve the performance of certain multivalent metal electrodes, the electrodes can be treated prior to use in an electrochemical cell by applying a solution comprising an acid to a surface of a multivalent metal electrode, then removing excess solution comprising the acid and drying the surface of the multivalent metal electrode. The resulting electrode has an outer interphase layer comprised of a hydrated hydroxychloride comprising the multivalent metal, where the interphase layer has a thickness of less than 5 μm.
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