公开(公告)号：WO2020252216A1

公开(公告)日：2020-12-17

申请号：PCT/US2020/037331

申请日：2020-06-11

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： CHEN, Kuan-Hung ,  DASGUPTA, Neil ,  SAKAMOTO, Jeffrey ,  NAMKGOONG, Min, Ji

IPC: H01M4/133 ,  H01M4/36 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/02

Abstract: An anode for a lithium ion battery is disclosed includes a first major face, a second major face that, together with the first major face, defines a thickness of the anode, and at least one carbonaceous electrochemically active lithium host material distributed between the first and second major faces of the anode, The at least one carbonaceous electrochemically active lithium host material is selected from the group consisting of graphite, hard carbon, or a blend of graphite and hard carbon. The anode additionally defines a plurality of vertical channels extending at least partially through the thickness of the anode. A lithium-ion batter that includes the disclosed anode and a method of charging a lithium-ion battery that includes the disclosed anode are also disclosed.

公开(公告)号：WO2018226826A1

公开(公告)日：2018-12-13

申请号：PCT/US2018/036254

申请日：2018-06-06

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  THOMPSON, Travis ,  SHARAFI, Asma ,  TAYLOR, Nathan ,  DASGUPTA, Neil, P. ,  KAZYAK, Eric

IPC: H01M4/1395 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/62

Abstract: A method is disclosed for suppressing propagation of a metal in a solid state electrolyte during cycling of an electrochemical device including the solid state electrolyte and an electrode comprising the metal. One method comprises forming the solid state electrolyte such that the solid state electrolyte has a structure comprising a plurality of grains of a metal-ion conductive material and a grain boundary phase located at some or all of grain boundaries between the grains, wherein the grain boundary phase suppresses propagation of the metal in the solid state electrolyte during cycling. Another method comprises forming the solid state electrolyte such that the solid state electrolyte is a single crystal.

公开(公告)号：WO2021257973A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/038062

申请日：2021-06-18

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  GUPTA, Arushi

IPC: H01M10/056 ,  H01M10/05 ,  H01M10/0568 ,  H01M10/0525 ,  H01M2300/0028 ,  H01M2300/0071 ,  H01M2300/0091

Abstract: A hybrid electrolyte for an electrochemical device comprises: (i) a first electrolyte comprising a solid state electrolyte material, such as lithium lanthanum zirconium tantalum oxide (LLZTO) or lithium lanthanum zirconium oxide (LLZO); and a second electrolyte comprising a liquid electrolyte or a gel electrolyte, the second electrolyte comprising a solvent and a salt in case of a liquid electrolyte and polymer, solvent and a salt in case of a gel electrolyte. The salt is selected from the group consisting of lithium (halosulfonyl)imides, lithium (haloalkanesulfonyl)imides, lithium (halosulfonyl haloalkanesulfonyl)imides,, and mixtures thereof, wherein the second electrolyte contacts the first surface of the first electrolyte. An electrochemical device comprises the hybrid electrolyte; a cathode facing the first surface of the first electrolyte of the hybrid electrolyte; and an anode contacting the second surface of the first electrolyte of the hybrid electrolyte, wherein the anode comprises lithium metal.

公开(公告)号：WO2019108772A1

公开(公告)日：2019-06-06

申请号：PCT/US2018/063027

申请日：2018-11-29

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  WANG, Michael, J.

IPC: C25B15/08

Abstract: Disclosed is a method for forming a solid state electrolyte. The method includes a first step of combining a solid comprising lithium, a second solid comprising lanthanum, a third solid comprising zirconium, and a fourth solid comprising bismuth to form a mixture. The method includes a second step of applying simultaneous heat and pressure to the mixture to form a ceramic material. The solid state electrolyte is ionically conducting and can be used as an electrolyte for an electrochemical device such as a battery or supercapacitor.

公开(公告)号：WO2018184007A1

公开(公告)日：2018-10-04

申请号：PCT/US2018/025685

申请日：2018-04-02

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  THOMPSON, Travis ,  SHARAFI, Asma

IPC: H01M10/0562 ,  H01M10/0525 ,  C04B35/486 ,  C04B35/488 ,  C04B35/64

Abstract: Disclosed are electrochemical devices, such as lithium battery electrodes, lithium ion conducting solid state electrolytes, and solid-state lithium metal batteries including these electrodes and solid state electrolytes. In one embodiment, a method for forming an electrochemical device is disclosed in which a precursor electrolyte is heated to remove at least a portion of a resistive surface region of the precursor electrolyte.

公开(公告)号：WO2021046101A1

公开(公告)日：2021-03-11

申请号：PCT/US2020/049025

申请日：2020-09-02

Applicant: EMPA ,  THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： BAY, Marie-Claude ,  BATTAGLIA, Corsin ,  WANG, Michael ,  SAKAMOTO, Jeffrey

IPC: H01M10/058 ,  H01M10/0562 ,  H01M10/054

Abstract: Disclosed are electrochemical devices, such as sodium ion conducting solid state electrolytes, sodium battery electrodes, and solid-state sodium metal batteries including these electrodes and solid state electrolytes. One example method for preparing a sodium/sodium-β"-alumina interface with low interfacial resistance and capable of achieving high current density in an electrochemical cell includes the steps of: (a) providing a precursor electrolyte having a resistive surface region, wherein the precursor electrolyte comprises sodium-β"-alumina; (b) removing at least a portion of the resistive surface region; (c) heating the precursor electrolyte thereby forming a solid state electrolyte, and (d) placing a side of the solid state electrolyte in contact with a sodium anode.

公开(公告)号：WO2019032514A1

公开(公告)日：2019-02-14

申请号：PCT/US2018/045508

申请日：2018-08-07

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  THOMPSON, Travis ,  TAYLOR, Nathan

IPC: H01M4/62

Abstract: Disclosed are electrochemical devices, such as lithium ion battery electrodes, lithium ion conducting solid-state electrolytes, and solid-state lithium ion batteries including these electrodes and solid-state electrolytes. Also disclosed are methods for making such electrochemical devices. Also disclosed are composite electrodes for solid state electrochemical devices. The composite electrodes include one or more separate phases within the electrode that provide electronic and ionic conduction pathways in the electrode active material phase.

公开(公告)号：WO2018068034A1

公开(公告)日：2018-04-12

申请号：PCT/US2017/055704

申请日：2017-10-09

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  THOMPSON, Travis ,  TAYLOR, Nathan

IPC: H01M2/26 ,  H01M6/40 ,  H01M10/052 ,  H01M10/056

Abstract: The present disclosure relates to a method for forming solid-state electrolytes, electrodes, current collectors, and/or conductive additives used in solid-state batteries. In one version, the method includes depositing a stabilization coating on a powdered electrolyte material, or a powdered electrode material, or a powdered conductive additive material and forming a slurry comprising the coated material. The slurry is then cast on a surface to form a layer, and the layer is sintered to form a solid state electrolyte, or an electrode, or an electrode having the conductive additive.

Abstract translation: 本公开涉及用于形成在固态电池中使用的固态电解质，电极，集电器和/或导电添加剂的方法。 在一个版本中，该方法包括在粉末状电解质材料，粉末状电极材料或粉末状导电添加剂材料上沉积稳定涂层，并形成包含该涂覆材料的浆液。 然后将浆液浇铸在表面上以形成一层，并将该层烧结以形成固态电解质，或电极或具有导电添加剂的电极。

公开(公告)号：WO2019139966A1

公开(公告)日：2019-07-18

申请号：PCT/US2019/012871

申请日：2019-01-09

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  THOMPSON, Travis ,  TAYLOR, Nathan

IPC: H01M4/70 ,  H01M4/64 ,  H01M4/66

Abstract: An article for forming an electrochemical device is disclosed. The article comprises a metallic current collector clad with an ion conducting solid-electrolyte material such that intimate contact between the current collector and the ion conducting solid-electrolyte material is made. A lithium metal anode can be formed in situ between the current collector clad and the ion conducting solid-electrolyte material from lithium ions contained within a cathode material that is placed in contact with the ion conducting solid-electrolyte material. A bipolar electrochemical cell can be constructed from the article.

公开(公告)号：WO2018184010A1

公开(公告)日：2018-10-04

申请号：PCT/US2018/025697

申请日：2018-04-02

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： SAKAMOTO, Jeffrey ,  THOMPSON, Travis ,  TAYLOR, Nathan

IPC: H01M8/0228 ,  H01M10/0562 ,  H01M10/0565

Abstract: Disclosed are electrochemical devices, such as lithium battery electrodes, lithium ion conducting solid-state electrolytes, and solid-state lithium metal batteries including these electrodes and solid-state electrolytes. In one disclosed method, a solid state electrolyte material including a precursor layer having a first electronic conductivity is provided; and the precursor layer on the solid state electrolyte material is reduced to an interfacial layer having a second electronic conductivity greater than the first electronic conductivity. Also disclosed is a method of forming a solid state electrolyte for an electrochemical device including an anode comprising an electrochemically active metal, wherein the method comprises providing a solid state electrolyte material, and depositing an interfacial layer comprising a first metal on the surface of the solid state electrolyte material, wherein the electrochemically active metal does not form an alloy with the first metal during cycling or formation of the electrochemical device.