公开(公告)号：US20220181629A1

公开(公告)日：2022-06-09

申请号：US17542147

申请日：2021-12-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong Lu ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/62

Abstract: The present disclosure relates to an electrochemical cell having an elastic binding polymer that improves long-term performance of the electrochemical cell, particularly when the electrochemical cell includes an electroactive material that undergoes volumetric expansion and contraction during cycling of the electrochemical cell (such as, silicon-containing electroactive materials). The electrochemical cell can include the elastic binding polymer as an electrode additive and/or a coating layer disposed adjacent to an exposed surface of an electrode that includes an electroactive material that undergoes volumetric expansion and contraction and/or a gel layer disposed adjacent to an electrode that includes an electroactive material that undergoes volumetric expansion and contraction. The elastic binding polymer may include one or more alginates or alginate derivatives and at least one crosslinker.

公开(公告)号：US20210036310A1

公开(公告)日：2021-02-04

申请号：US16598237

申请日：2019-10-10

Applicant: GM Global Technology Operations LLC

Inventor： Mengyan Hou ,  Zhe Li ,  Qili Su ,  Xiaochao Que ,  Meiyuan Wu

IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/0562

Abstract: An electrode including micro-sized secondary particle (MSSP) with enhanced ionic conductivity for solid-state battery is provided. The MSSP comprises a cathode particle and a solid-state electrolyte. The cathode particle is at least partially coated by solid-state electrolyte. The lithium ion transport inside the micro-sized secondary particles is increased by the incorporation of solid-state electrolyte. The electrode can be prepared by casting the slurry comprising MSSP, another electrolyte, binders, and conductive additives on the current collector. The current collector is comprised of a conductive material. The current collector has a first side and a second side. The electrode active material layer is disposed on one of the first and second sides of the current collector.

公开(公告)号：US09937481B1

公开(公告)日：2018-04-10

申请号：US15405364

申请日：2017-01-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Meiyuan Wu ,  Zhiqiang Yu ,  Xiusheng Zhang

IPC: B01J19/24 ,  H01G13/04 ,  H01M4/23 ,  F26B21/14 ,  H01M10/42

CPC classification number: B01J19/24 ,  B01J2219/24 ,  F26B21/14 ,  H01G13/04 ,  H01M4/23 ,  H01M10/4207

Abstract: A reaction vessel in the form of a box is sized to closely contain electrode elements or core cell elements of a lithium-based or sodium-based battery or capacitor for contacting of the electrode material, placed in the reaction vessel, with a flowing gaseous stream of an inert carrier gas and vapor of an organic solvent of water for removing residual water from the porous electrode material elements which are to be infiltrated with a non-aqueous electrolyte solution. Complementary equipment is provided for delivering the gaseous stream to the reaction vessel with predetermined portions of carrier gas and organic vapor at a predetermined temperature, pressure, and flow rate.

公开(公告)号：US20170162917A1

公开(公告)日：2017-06-08

申请号：US15355101

申请日：2016-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang Yu ,  Dewen Kong ,  Meiyuan Wu

IPC: H01M10/42 ,  H01M4/485 ,  H01G11/86 ,  H01G11/06 ,  H01G11/46 ,  H01M10/0525 ,  H01M4/505

CPC classification number: H01M10/4235 ,  H01G11/06 ,  H01G11/46 ,  H01G11/50 ,  H01G11/86 ,  H01M4/13 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/054 ,  H01M10/0567 ,  H01M2220/20 ,  H01M2300/0025 ,  Y02E60/122

Abstract: An assembled electrochemical cell is formed comprising an anode containing sub-micrometer and micrometer-size particles of an anode material for cyclically intercalating and de-intercalating lithium ions or sodium ions, a cathode containing like-sized particles of a cathode material for intercalating and de-intercalating the ions utilized in the anode, and a non-aqueous electrolyte composed for transporting ions between the anode and cathode. Nanometer-size particles of a basic metal oxide or a metal nitride are mixed with at least one of (i) the particles of electrode material for at least one of the anode and cathode and (ii) the electrolyte. The composition and the amount of the metal oxide or metal nitride is determined for chemically neutralizing acidic contaminants formed in the operation of the electrochemical cell, adsorbing incidental water, and to generally prevent degradation of the respective electrode materials.