公开(公告)号：US20180083320A1

公开(公告)日：2018-03-22

申请号：US15560599

申请日：2016-04-05

申请人： The Trustees of Princeton University ,  The Regents of the University of California

发明人： Daniel STEINGART ,  Benjamin HERTZBERG ,  Mylad CHAMOUN ,  Greg DAVIES ,  Ying Shirley MENG

IPC分类号： H01M10/26 ,  H01M10/44 ,  H01M4/38

CPC分类号： H01M10/26 ,  H01M4/38 ,  H01M10/44 ,  H01M2004/028 ,  H01M2300/0014

摘要： The invention provides an electrolyte composition which is adapted for use in a rechargeable alkaline electrochemical cell, and especially preferably adapted for use in a rechargeable manganese zinc electrochemical cell, which electrolyte composition imparts improved performance characteristics to the rechargeable alkaline electrochemical cell. The electrolyte composition includes an electrolyte composition in which contains a potassium hydroxide and lithium hydroxide in a concentration and a respective molar ratio of about 1 molar potassium hydroxide to 2.5-3.7 (preferably 1:3) molar lithium hydroxide (1 M KOH:2.5-3.7 M LiOH). Also provided are alkaline electrochemical cells and alkaline batteries comprising the electrolyte compositions. The resultant alkaline electrochemical cells and alkaline batteries exhibit improved performance characteristics, as the electrolyte composition significantly inhibits the passivation of Zn, and may also be useful in this role in other battery chemistries.

公开(公告)号：US20160218363A1

公开(公告)日：2016-07-28

申请号：US14917340

申请日：2014-09-05

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Ying Shirley MENG ,  Haodong LIU

IPC分类号： H01M4/505 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/525 ,  H01M10/054

CPC分类号： H01M4/505 ,  C01G53/50 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/04 ,  H01M4/525 ,  H01M4/623 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2300/0037

摘要： Cathode materials and cathodes for sodium and sodium-ion cells and batteries include sodium, lithium and transition metal oxide cathode materials. An example cathode is the composition NaxLiyNizMnuMvOw, with M being one or more metal cation, x+y≧0.9, (x+y)/(z+u+v)>1, (z+u+v)>1, 0≦z≦0.9, 0≦u≦0.9, 0≦v≦0.9, x+y+z+u+v is less than w, and the value of w depends on the proportions and average oxidation states of the metallic elements. The combined positive charge of the metallic elements is balanced by the number of oxygen anions, w. W is less than or equal to 2, i.e., NaxLiyNizMnuMvO2−a, and desirably equal to or slightly less than 2. M is one or more metal cations selected preferably from one or more divalent, trivalent, tetravalent, pentavalent or hexavalent cations, such as Mg2+, Cu2+, Co3+, B3+, Fe3+, Al3+, Ti4+, Zr4+, V5+, and Cr6+ etc. Synthesis methods are provided.

摘要翻译： 钠和钠离子电池和电池的阴极材料和阴极包括钠，锂和过渡金属氧化物阴极材料。 一个示例性阴极是组成NaxLiyNizMnuMvOw，其中M是一个或多个金属阳离子，x +y≥0.9，（x + y）/（z + u + v）> 1，（z + u + v）> 1,0 ≤z≤0.9,0≤u≤0.9,0≤v≤0.9，x + y + z + u + v小于w，w的值取决于金属元素的比例和平均氧化态。 金属元素的组合正电荷由氧阴离子的数量w平衡。 W小于或等于2，即NaxLiyNizMnuMvO2-a，并且理想地等于或略小于2.M是优选选自一种或多种二价，三价，四价，五价或六价阳离子的一种或多种金属阳离子，例如 作为Mg2 +，Cu2 +，Co3 +，B3 +，Fe3 +，Al3 +，Ti4 +，Zr4 +，V5 +和Cr6 +等。

公开(公告)号：US20230127602A1

公开(公告)日：2023-04-27

申请号：US17912452

申请日：2021-03-19

申请人： LG ENERGY SOLUTION, LTD. ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Jeong-Beom LEE ,  Hye-Ri JUNG ,  Hyea-Eun HAN ,  Hoe-Jin HAH ,  Sung-Rok BANG ,  Ying Shirley MENG ,  Huan Shen Darren TAN

IPC分类号： H01M4/38 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/505 ,  H01M4/36 ,  H01M4/525

摘要： The present disclosure relates to a solid state battery comprising silicon (Si) as a negative electrode active material. The solid state battery according to the present disclosure does not comprise a conductive material and a solid electrolyte in the negative electrode and comprise a minimum amount of binder. According to this structural feature, the battery according to the present disclosure has good electrical and chemical properties including heat resistant stability, energy density, life characteristics and Coulombic efficiency.

公开(公告)号：US20200303720A1

公开(公告)日：2020-09-24

申请号：US16361740

申请日：2019-03-22

申请人： LG CHEM, LTD. ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Chi Ho JO ,  Wang Mo JUNG ,  Dong Hun LEE ,  Ying Shirley MENG ,  Abhik BANERJEE ,  Minghao ZHANG

IPC分类号： H01M4/131 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0562 ,  H01M10/0525

摘要： A method of treating the surface of a positive electrode active material that is capable of inhibiting a reaction at the interface between a sulfide-based solid electrolyte and the positive electrode active material. A positive electrode active material particle for sulfide-based all-solid-state batteries, the surface of which is reformed, using the method and a sulfide-based all-solid-state battery, the charge/discharge characteristics of which are improved, including the same are also disclosed. The positive electrode active material particle for sulfide-based all-solid-state batteries manufactured using a dry-type method exhibits larger capacity than a positive electrode active material particle for sulfide-based all-solid-state batteries manufactured through a conventional wet-type process. In addition, the manufacturing process is simplified, and the amount of byproducts is reduced.

公开(公告)号：US20230115956A1

公开(公告)日：2023-04-13

申请号：US17911127

申请日：2021-03-12

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Ying Shirley MENG ,  Erik WU ,  Swastika BANERJEE ,  Han Mei TANG ,  Shyue Ping ONG ,  Abhik BANERJEE

IPC分类号： H01M10/0562 ,  H01M4/40 ,  H01M4/485 ,  H01M10/054

摘要： Sodium-based all solid-state batteries exhibit improved battery cycle life and stability with the use of a new chloride-based sodium solid electrolyte in which sodium diffusivity within the electrolyte is enhanced through substitution of atoms including one or more of Y with Zr, Ti, Hf, Ta, and Na with one or more of Ca and Sr.

公开(公告)号：US20230113915A1

公开(公告)日：2023-04-13

申请号：US17913110

申请日：2021-03-19

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Ying Shirley MENG ,  Abhik BANERJEE ,  Hanmei TANG ,  Erik WU ,  Han NGUYEN ,  Darren Huan Shen TAN ,  Jean-Marie DOUX ,  Shyue Ping ONG

IPC分类号： H01M4/62 ,  H01M4/04 ,  H01M10/0562

摘要： An interfacial protective coating layer of LTO is effective in preventing unwanted interfacial reactions between the solid-state electrolyte and cathode electrodes from occurring. Incorporation of the inventive coating into sodium-based all-solid-state batteries allows for room temperature operation, high voltage, and long cycle life.

公开(公告)号：US20230335708A1

公开(公告)日：2023-10-19

申请号：US18340403

申请日：2023-06-23

申请人： LG ENERGY SOLUTION, LTD. ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Darren H.S. TAN ,  Zheng CHEN ,  Ying Shirley MENG ,  Chi Ho JO ,  Wang Mo JUNG

IPC分类号： H01M4/136 ,  H01M4/62 ,  H01M10/39

CPC分类号： H01M4/136 ,  H01M4/622 ,  H01M10/3954

摘要： A solid electrolyte film for sulfide-based all-solid-state batteries, and more particularly a composition of a solid electrolyte, a binder, and a solvent used to manufacture a solid electrolyte film for sulfide-based all-solid-state batteries that is thin and has high ion conductivity. In particular, a solid electrolyte film composition for sulfide-based all-solid-state batteries including a solvent having a dielectric constant of x (1.5

公开(公告)号：US20230017977A1

公开(公告)日：2023-01-19

申请号：US17946250

申请日：2022-09-16

申请人： LG ENERGY SOLUTION, LTD. ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Jeong-Beom LEE ,  Hye-Ri JUNG ,  Hyea-Eun HAN ,  Hoe-Jin HAH ,  Sung-Rok BANG ,  Ying Shirley MENG ,  Huan Shen Darren TAN

IPC分类号： H01M4/38 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/40 ,  H01M10/058

摘要： A solid state battery is described, which has a negative electrode having a negative electrode active material layer including silicon (Si) as a negative electrode active material. The Si may be present as particles, e.g., microparticles, having an average particle size (D50) of 0.1 μm to 10 μm. The negative electrode active material layer may include the silicon (Si) in an amount of 75 wt % or more, 95 wt % or more, 99 wt % or more, or 99.9 wt % or more, based on 100 wt % of the negative electrode active material layer. The negative electrode active material layer can be free or substantially free of conductive material, carbon, solid state electrolyte, and/or binder. Preferably, after charge/discharge cycles, the negative electrode active material layer forms densified and interconnected large particles of Li—Si alloy, e.g., the Li—Si alloy may have at least one columnar structure and at least one void.

公开(公告)号：US20230014961A1

公开(公告)日：2023-01-19

申请号：US17782977

申请日：2020-12-10

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Zheng CHEN ,  Darren Huan Shen TAN ,  Abhik BANERJEE ,  Ying Shirley MENG

IPC分类号： H01M10/54 ,  H01M10/0585 ,  B09B3/80 ,  B09B3/40 ,  B09B3/70 ,  C01G51/00 ,  C01B25/14

摘要： In a method for recycling all solid-state batteries, spent battery cells are dissolved in anhydrous ethanol. The resulting solution is separated into solids and supernatants which are separately processed to regenerate the solid electrolyte and the solid electrode materials. The supernatant is subjected to vacuum evaporation to precipitate an electrolyte powder, which is then annealed under flowing oxygen. The solid electrode material is regenerated by washing the solids with water, drying the washed solids, relithiating the washed solids, and annealing the relithiated solids. The resulting materials are suitable for use in fabrication of new all-solid state batteries.