公开(公告)号：US20190267616A1

公开(公告)日：2019-08-29

申请号：US16288859

申请日：2019-02-28

Applicant: ELECTROVAYA INC.

Inventor： Rajshekar DAS GUPTA ,  Elmira MEMARZADEH ,  Sankar DAS GUPTA ,  Bjorn Haugseter ,  Tom Henriksen ,  Lars Ole Valøen ,  Akhilesh Kumar Srivastava

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/136 ,  H01M4/04 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/139 ,  H01M10/058 ,  H01M10/0525 ,  H01M4/13915 ,  H01M4/1391

Abstract: The present disclosure relates generally to an electrode produced with a non-toxic solvent, resulting in a homogeneous mixture with uniform distributions of a conductive additive and a binder. Electrodes produced according to the present disclosure feature narrow binder particle size distribution, which distinguishes such electrodes from typical electrodes produced via a N-Methyl-Pyrrolidone (NMP) process. The resulting microstructure promotes the flow of current through the electrode and has an improved cycling stability due, in part, to the binder's and the conductive additive's ability to bind with the active material particles used in the fabrication of the electrode.

公开(公告)号：US11355744B2

公开(公告)日：2022-06-07

申请号：US16288859

申请日：2019-02-28

Applicant: ELECTROVAYA INC.

Inventor： Rajshekar Das Gupta ,  Elmira Memarzadeh ,  Sankar Das Gupta ,  Bjorn Haugseter ,  Tom Henriksen ,  Lars Ole Valøen ,  Akhilesh Kumar Srivastava

IPC: H01M4/36 ,  H01M4/136 ,  H01M4/04 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/139 ,  H01M10/058 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/13915 ,  H01M4/1391

Abstract: The present disclosure relates generally to an electrode produced with a non-toxic solvent, resulting in a homogeneous mixture with uniform distributions of a conductive additive and a binder. Electrodes produced according to the present disclosure feature narrow binder particle size distribution, which distinguishes such electrodes from typical electrodes produced via a N-Methyl-Pyrrolidone (NMP) process. The resulting microstructure promotes the flow of current through the electrode and has an improved cycling stability due, in part, to the binder's and the conductive additive's ability to bind with the active material particles used in the fabrication of the electrode.

公开(公告)号：US20220302438A1

公开(公告)日：2022-09-22

申请号：US17834838

申请日：2022-06-07

Applicant: ELECTROVAYA INC.

Inventor： Rajshekar DAS GUPTA ,  Elmira MEMARZADEH ,  Sankar DAS GUPTA ,  Bjorn Haugseter ,  Tom Henriksen ,  Lars Ole Valøen ,  Akhilesh Kumar Srivastava

IPC: H01M4/36 ,  H01M4/136 ,  H01M4/04 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/139 ,  H01M10/058 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/13915 ,  H01M4/1391

Abstract: The present disclosure relates generally to an electrode produced with a non-toxic solvent, resulting in a homogeneous mixture with uniform distributions of a conductive additive and a binder. Electrodes produced according to the present disclosure feature narrow binder particle size distribution, which distinguishes such electrodes from typical electrodes produced via a N-Methyl-Pyrrolidone (NMP) process. The resulting microstructure promotes the flow of current through the electrode and has an improved cycling stability due, in part, to the binder's and the conductive additive's ability to bind with the active material particles used in the fabrication of the electrode.

公开(公告)号：US10153482B2

公开(公告)日：2018-12-11

申请号：US15138797

申请日：2016-04-26

Applicant: ELECTROVAYA INC.

Inventor： Bjorn Haugseter ,  Tom Henriksen ,  Lars Ole Valøen ,  Akhilesh Kumar Srivastava

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/13915 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/04 ,  H01M4/139 ,  H01M4/136 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

Abstract: The present invention relates to a method for manufacturing slurry for coating of electrodes for use in lithium ion batteries, wherein the method comprises mixing active materials with a binder into a binder solution, and adding an organic carbonate to the binder solution to generate the slurry. The present invention also relates to a method for manufacturing electrodes for a lithium battery cell, wherein the method comprises mixing active materials with a binder into a binder solution, adding an organic carbonate to the binder solution to generate slurry, wherein the above adding step is carried out at temperature above melting temperature of the organic carbonate, coating electrode material with the slurry, drying the coating on the electrode material by drying the organic carbonate, and surface treatment of the slurry so that the electrode is prepared for use in a lithium ion battery cell.

公开(公告)号：US20160365568A1

公开(公告)日：2016-12-15

申请号：US15138797

申请日：2016-04-26

Applicant: MILJØBIL GRENLAND AS ,  ELECTROVAYA INC.

Inventor： Bjorn Haugseter ,  Tom Henriksen ,  Lars Ole Valøen ,  Akhilesh Kumar Srivastava

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/62 ,  H01M4/04 ,  H01M4/136 ,  H01M4/505 ,  H01M4/1391 ,  H01M4/131 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/525

CPC classification number: H01M4/364 ,  H01M4/0402 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/136 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/13915 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/62 ,  H01M4/621 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/058 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/49115

Abstract: The present invention relates to a method for manufacturing slurry for coating of electrodes for use in lithium ion batteries, wherein the method comprises mixing active materials with a binder into a binder solution, and adding an organic carbonate to the binder solution to generate the slurry. The present invention also relates to a method for manufacturing electrodes for a lithium battery cell, wherein the method comprises mixing active materials with a binder into a binder solution, adding an organic carbonate to the binder solution to generate slurry, wherein the above adding step is carried out at temperature above melting temperature of the organic carbonate, coating electrode material with the slurry, drying the coating on the electrode material by drying the organic carbonate, and surface treatment of the slurry so that the electrode is prepared for use in a lithium ion battery cell.

Abstract translation: 本发明涉及一种用于制造用于锂离子电池的电极涂覆用浆料的方法，其中所述方法包括将活性材料与粘合剂混合到粘合剂溶液中，并将有机碳酸酯加入到粘合剂溶液中以产生浆料。 本发明还涉及一种用于制造锂电池电池的电极的方法，其中所述方法包括将活性材料与粘合剂混合到粘合剂溶液中，向粘合剂溶液中加入有机碳酸盐以产生浆料，其中上述添加步骤为 在有机碳酸酯的熔点以上的温度下进行，用浆料涂布电极材料，通过干燥有机碳酸酯干燥电极材料上的涂层，并对浆料进行表面处理，使得电极准备用于锂离子 电池单元