公开(公告)号：US20240356093A1

公开(公告)日：2024-10-24

申请号：US18653761

申请日：2024-05-02

Applicant: Enovix Corporation

Inventor： Christopher G. Castledine ,  David T. Fouchard ,  Jonathan C. Doan ,  Christopher J. Spindt ,  Robert M. Spotnitz ,  James D. Wilcox ,  Ashok Lahiri ,  Murali Ramasubramanian

IPC: H01M10/44 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/48

CPC classification number: H01M10/448 ,  H01M4/386 ,  H01M10/0525 ,  H01M10/446 ,  H01M10/48

Abstract: A method is provided for activating a secondary battery having a negative electrode, a positive electrode, and a microporous separator between the negative and positive electrodes permeated with carrier-ion containing electrolyte, the negative electrode having anodically active silicon or an alloy thereof. The method includes transferring carrier ions from the positive electrode to the negative electrode to at least partially charge the secondary battery, and transferring carrier ions from an auxiliary electrode to the positive electrode, to provide the secondary battery with a positive electrode end of discharge voltage Vpos,eod and a negative electrode end of discharge voltage Vneg,eod when the cell is at a predefined Vcell,eod value, the value of Vpos,eod corresponding to a voltage at which the state of charge of the positive electrode is at least 95% of its coulombic capacity and Vneg,eod is at least 0.4 V (vs Li) but less than 0.9 V (vs Li).

公开(公告)号：US10770760B2

公开(公告)日：2020-09-08

申请号：US15572191

申请日：2016-05-06

Applicant: Enovix Corporation

Inventor： Christopher G. Castledine ,  David T. Fouchard ,  Jonathan C. Doan ,  Christopher J. Spindt ,  Robert M. Spotniz ,  James D. Wilcox ,  Ashok Lahiri ,  Murali Ramasubramanian

IPC: H01M10/44 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/48

Abstract: A method is provided for activating a secondary battery having a negative electrode, a positive electrode, and a microporous separator between the negative and positive electrodes permeated with carrier-ion containing electrolyte, the negative electrode having anodically active silicon or an alloy thereof. The method includes transferring carrier ions from the positive electrode to the negative electrode to at least partially charge the secondary battery, and transferring carrier ions from an auxiliary electrode to the positive electrode, to provide the secondary battery with a positive electrode end of discharge voltage Vpos,eod and a negative electrode end of discharge voltage Vneg,eod when the cell is at a predefined Vcell,eod value, the value of Vpos,eod corresponding to a voltage at which the state of charge of the positive electrode is at least 95% of its coulombic capacity and Vneg,eod is at least 0.4 V (vs Li) but less than 0.9 V (vs Li).

公开(公告)号：US12009488B2

公开(公告)日：2024-06-11

申请号：US18098285

申请日：2023-01-18

Applicant: Enovix Corporation

Inventor： Christopher G. Castledine ,  David T. Fouchard ,  Jonathan C. Doan ,  Christopher J. Spindt ,  Robert M. Spotnitz ,  James D. Wilcox ,  Ashok Lahiri ,  Murali Ramasubramanian

IPC: H01M10/44 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/48

CPC classification number: H01M10/448 ,  H01M4/386 ,  H01M10/0525 ,  H01M10/446 ,  H01M10/48

Abstract: A method is provided for activating a secondary battery having a negative electrode, a positive electrode, and a microporous separator between the negative and positive electrodes permeated with carrier-ion containing electrolyte, the negative electrode having anodically active silicon or an alloy thereof. The method includes transferring carrier ions from the positive electrode to the negative electrode to at least partially charge the secondary battery, and transferring carrier ions from an auxiliary electrode to the positive electrode, to provide the secondary battery with a positive electrode end of discharge voltage Vpos,eod and a negative electrode end of discharge so voltage Vneg,eod when the cell is at a predefined Vcell,eod value, the value of Vpos,eod corresponding to a voltage at which the state of charge of the positive electrode is at least 95% of its coulombic capacity and Vneg,eod is at least 0.4 V (vs Li) but less than 0.9 V (vs Li).

公开(公告)号：US11569533B2

公开(公告)日：2023-01-31

申请号：US16998203

申请日：2020-08-20

Applicant: Enovix Corporation

Inventor： Christopher G. Castledine ,  David T. Fouchard ,  Jonathan C. Doan ,  Christopher J. Spindt ,  Robert M. Spotniz ,  James D. Wilcox ,  Ashok Lahiri ,  Murali Ramasubramanian

IPC: H01M10/44 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/48

Abstract: A method is provided for activating a secondary battery having a negative electrode, a positive electrode, and a microporous separator between the negative and positive electrodes permeated with carrier-ion containing electrolyte, the negative electrode having anodically active silicon or an alloy thereof. The method includes transferring carrier ions from the positive electrode to the negative electrode to at least partially charge the secondary battery, and transferring carrier ions from an auxiliary electrode to the positive electrode, to provide the secondary battery with a positive electrode end of discharge voltage Vpos,eod and a negative electrode end of discharge voltage Vneg,eod when the cell is at a predefined Vcell,eod value, the value of Vpos,eod corresponding to a voltage at which the state of charge of the positive electrode is at least 95% of its coulombic capacity and Vneg,eod is at least 0.4 V (vs Li) but less than 0.9 V (vs Li).