公开(公告)号：US12166178B2

公开(公告)日：2024-12-10

申请号：US16861475

申请日：2020-04-29

Applicant: Global Graphene Group, Inc.

Inventor： Hui He ,  Aruna Zhamu ,  Bor Z. Jang

IPC: H01M10/058 ,  H01M10/0525 ,  H01M10/0569

Abstract: Provided is a method of producing one or a plurality of lithium cells, comprising: (a) providing at least a dry lithium cell, comprising a cathode, an anode, a porous separator, and a protective casing, wherein the dry cell is electrolyte-free or contains an initial amount of electrolyte less than a final desired amount; (b) injecting a liquid electrolyte into at least a dry cell to form at least a wet cell, wherein the liquid electrolyte comprises a lithium salt dissolved in a first liquid solvent having a first lithium salt concentration from 0.001 M to 3.0 M; (c) removing portion of the liquid solvent from at least a wet cell to obtain at least a lithium cell comprising a quasi-solid electrolyte having a final lithium salt concentration higher than first concentration and higher than 2.0 M; and (d) optionally sealing the protective housing to produce the lithium cell(s).

公开(公告)号：US11958382B2

公开(公告)日：2024-04-16

申请号：US16837569

申请日：2020-04-01

Applicant: Global Graphene Group, Inc.

Inventor： Aruna Zhamu ,  Yu-Sheng Su ,  Bor Z. Jang

IPC: B60L58/00 ,  B60L58/24 ,  B60L58/27 ,  B60L58/33 ,  B60L58/34 ,  H01M10/44 ,  H01M10/46 ,  H01M10/653 ,  H02J7/00

CPC classification number: B60L58/24 ,  B60L58/27 ,  B60L58/33 ,  B60L58/34 ,  H01M10/44 ,  H01M10/441 ,  H01M10/46 ,  H01M10/653 ,  H02J7/0013

Abstract: Provided is a battery charging system, comprising (a) at least one charging circuit to charge at least one rechargeable battery cell; and (b) a heating device to provide heat that is transported through a heat spreader element, implemented fully outside the battery cell, to heat up the battery cell to a desired temperature Tc before or during battery charging. The system may further comprise (c) a cooling device in thermal contact with the heat spreader element configured to enable transporting internal heat of the battery cell through the heat spreader element to the cooling device when the battery cell is discharged. Charging the battery at Tc enables completion of the charging of the battery in less than 15 minutes, typically less than 10 minutes, and more typically less than 5 minutes without adversely impacting the battery structure and performance. Also provided is a battery module or pack working with such a system.

公开(公告)号：US11949083B2

公开(公告)日：2024-04-02

申请号：US16899026

申请日：2020-06-11

Applicant: Global Graphene Group, Inc.

Inventor： Aruna Zhamu ,  Bor Z. Jang

IPC: H01M10/6567 ,  H01M10/0525 ,  H01M10/054 ,  H01M10/06 ,  H01M10/39 ,  H01M10/6556 ,  H01M50/20

CPC classification number: H01M10/6567 ,  H01M10/6556 ,  H01M50/20 ,  H01M10/0525 ,  H01M10/054 ,  H01M10/06 ,  H01M10/3909

Abstract: Provided is a battery assembly having a distributed cooling and fire protection system, the battery assembly comprising: (a) a plurality of battery cells; (b) a case configured to hold the plurality of battery cells; and (c) a cooling liquid distribution system, having a cooling liquid reservoir and/or pipes that are in proximity to at least a subset of the plurality of the cells and configured to deliver, on demand, a desired amount of the first cooling liquid on a cell or multiple cells in the vicinity of the cell when a temperature of the cell exceeds a threshold temperature; wherein the first cooling liquid comprises a fire protection or fire suppression substance which, on contact with the cell, prevents, retards, or extinguishes a cell fire and prevents a propagation or cell-to-cell cascading reactions of a thermal runaway or fire event.

公开(公告)号：US11916189B2

公开(公告)日：2024-02-27

申请号：US16861485

申请日：2020-04-29

Applicant: Global Graphene Group, Inc.

Inventor： Hui He ,  Aruna Zhamu ,  Bor Z. Jang

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M50/403 ,  H01M50/609

CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M50/403 ,  H01M50/609 ,  H01M2300/0034

Abstract: Provided is apparatus for introducing a quasi-solid electrolyte into one or a plurality of lithium battery cells, the apparatus comprising: (a) a cell-holding device to hold one or a plurality of lithium battery cells and is in a working relation to a liquid electrolyte-filling device that injects a liquid electrolyte into the battery cells, wherein the liquid electrolyte comprises a lithium salt dissolved in a first liquid solvent having a first lithium salt concentration from 0.001 M to 3.0 M (mole/L); and (b) a solvent vapor-removing device in a working relation to the cell-holding device, wherein the vapor-removing device comprises a pumping device to move solvent vapors away from the battery cells so that the electrolyte has a final lithium salt concentration higher than the first concentration and higher than 2.0 M. Also provided is a method of operating the apparatus.

公开(公告)号：US11699787B2

公开(公告)日：2023-07-11

申请号：US17122499

申请日：2020-12-15

Applicant: Global Graphene Group, Inc.

Inventor： Yu-Sheng Su ,  Minjie Li ,  Hui He ,  Qing Fang ,  Aruna Zhamu ,  Bor Z. Jang

IPC: H01M4/00 ,  H01M4/52 ,  H01M4/38 ,  H01M4/58 ,  H01M6/14 ,  H01M10/36 ,  H01M4/62 ,  H01M10/052 ,  H01M4/50 ,  H01M10/054 ,  H01M4/46 ,  H01M4/48 ,  H01M6/04

CPC classification number: H01M4/523 ,  H01M4/38 ,  H01M4/381 ,  H01M4/382 ,  H01M4/463 ,  H01M4/466 ,  H01M4/483 ,  H01M4/502 ,  H01M4/5815 ,  H01M4/625 ,  H01M6/04 ,  H01M6/14 ,  H01M10/052 ,  H01M10/054 ,  H01M10/36 ,  Y02T10/70

Abstract: An electrochemical battery cell comprising an anode having a primary anode active material, a cathode, and an ion-conducting electrolyte, wherein the cell has an initial output voltage, Vi, measured at 10% depth of discharge (DoD), selected from a range from 0.3 volts to 0.8 volts, and a final output voltage Vf measured at a DoD no greater than 90%, wherein a voltage variation, (Vi−Vf)/Vi, is no greater than ±10% and the specific capacity between Vi and Vf is no less than 100 mAh/g or 200 mAh/cm3 based on the cathode active material weight or volume, and wherein the primary anode active material is selected from lithium (Li), sodium (Na), potassium (K), magnesium (Mg), aluminum (Al), zinc (Zn), titanium (Ti), manganese (Mn), iron (Fe), vanadium (V), cobalt (Co), nickel (Ni), a mixture thereof, an alloy thereof, or a combination thereof.

公开(公告)号：US11637291B2

公开(公告)日：2023-04-25

申请号：US17089230

申请日：2020-11-04

Applicant: Global Graphene Group, Inc.

Inventor： Hui He ,  Aruna Zhamu ,  Bor Z. Jang

IPC: H01M4/62 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/13 ,  H01M4/02

Abstract: Provided is a lithium secondary battery comprising a cathode, an anode, and an electrolyte or separator-electrolyte assembly disposed between the cathode and the anode, wherein the anode comprises: (a) An anode current collector, initially having no lithium or lithium alloy as an anode active material when the battery is made and prior to a charge or discharge operation; and (b) a thin layer of a high-elasticity polymer in ionic contact with the electrolyte and having a recoverable tensile strain from 2% to 700%, a lithium ion conductivity no less than 10−8 S/cm, and a thickness from 0.5 nm to 100 μm. Preferably, the high-elasticity polymer contains a cross-linked network of polymer chains having an ether linkage, nitrile-derived linkage, benzo peroxide-derived linkage, ethylene oxide linkage, propylene oxide linkage, vinyl alcohol linkage, cyano-resin linkage, triacrylate monomer-derived linkage, tetraacrylate monomer-derived linkage, or a combination thereof in the cross-linked network of polymer chains.

公开(公告)号：US20230057285A1

公开(公告)日：2023-02-23

申请号：US17402188

申请日：2021-08-13

Applicant: Global Graphene Group, Inc.

Inventor： Aruna Zhamu ,  Hui He ,  Bor Z. Jang

IPC: H01M4/36 ,  H01M4/134 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/587

Abstract: The disclosure provides a multi-layer prelithiated anode including (a) a conducting substrate having a first primary surface and a second primary surface; (b) a first layer of lithium metal deposited onto the first primary surface of the conducting substrate; (c) a first graphitic layer that substantially covers the first lithium metal layer; and (d) a first anode active layer deposited on a primary surface of the first graphitic layer. The first anode active layer includes an anode active material. Also provided are a lithium battery including such a prelithiated anode and a method of producing such an anode.

公开(公告)号：US11325349B2

公开(公告)日：2022-05-10

申请号：US16877773

申请日：2020-05-19

Applicant: Global Graphene Group, Inc.

Inventor： Aruna Zhamu ,  Yanbo Wang ,  Bor Z. Jang

IPC: B32B9/04 ,  H05K7/20 ,  B32B7/12

Abstract: Provided is a laminated graphitic layer as an elastic heat spreader, the layer comprising: (A) a plurality of graphitic or graphene films prepared from (i) graphitization of a polymer film or pitch film, (ii) aggregation or bonding of graphene sheets, or (iii) a combination of (i) and (ii), wherein the graphitic or graphene film has a thermal conductivity of at least 200 W/mK, an electrical conductivity no less than 3,000 S/cm, and a physical density from 1.5 to 2.25 g/cm3; and (B) a conducting polymer network adhesive that bonds together the graphitic or graphene films to form the laminated graphitic layer; wherein the conductive polymer network adhesive is in an amount from 0.001% to 30% by weight and wherein the laminated graphitic layer preferably has a fully recoverable tensile elastic strain from 1% to 50% and an in-plane thermal conductivity from 100 W/mK to 1,750 W/mK.

公开(公告)号：US20220140348A1

公开(公告)日：2022-05-05

申请号：US17089230

申请日：2020-11-04

Applicant: Global Graphene Group, Inc.

Inventor： Hui He ,  Aruna Zhamu ,  Bor Z. Jang

IPC: H01M4/62 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/13 ,  H01M10/0585

Abstract: Provided is a lithium secondary battery comprising a cathode, an anode, and an electrolyte or separator-electrolyte assembly disposed between the cathode and the anode, wherein the anode comprises: (a) An anode current collector, initially having no lithium or lithium alloy as an anode active material when the battery is made and prior to a charge or discharge operation; and (b) a thin layer of a high-elasticity polymer in ionic contact with the electrolyte and having a recoverable tensile strain from 2% to 700%, a lithium ion conductivity no less than 10−8 S/cm, and a thickness from 0.5 nm to 100 μm. Preferably, the high-elasticity polymer contains a cross-linked network of polymer chains having an ether linkage, nitrile-derived linkage, benzo peroxide-derived linkage, ethylene oxide linkage, propylene oxide linkage, vinyl alcohol linkage, cyano-resin linkage, triacrylate monomer-derived linkage, tetraacrylate monomer-derived linkage, or a combination thereof in the cross-linked network of polymer chains.

公开(公告)号：US20210305639A1

公开(公告)日：2021-09-30

申请号：US16833616

申请日：2020-03-29

Applicant: Global Graphene Group, Inc.

Inventor： Aruna Zhamu ,  Bor Z. Jang

IPC: H01M10/653 ,  H01M10/613 ,  H01M10/655 ,  F28F21/02

Abstract: Provided is a cooling system for a battery module or pack comprising one or a plurality of battery cells, the system comprising a graphitic heat spreader element configured to be in thermal communication with the battery cells; and a cooling mechanism or device in thermal communication with the graphitic heat spreader element and configured to transport heat generated from the battery cells through the graphitic heat spreader element to the cooling mechanism or device when the battery cell is discharged. The graphitic heat spreader element may comprise a graphitic film selected from a flexible graphite sheet or an artificial graphite film obtained from carbonization and graphitization of a carbon precursor film.