公开(公告)号：US11239469B2

公开(公告)日：2022-02-01

申请号：US15995580

申请日：2018-06-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe Li ,  Xiaochao Que ,  Haijing Liu ,  Jingjing Wu ,  Dave G. Rich ,  Saad Hasan

IPC: H01M4/80 ,  H01M10/0525 ,  H01G11/06 ,  H01M10/056

Abstract: A hybrid lithium-ion battery/capacitor cell comprising at least a pair of graphite anodes assembled with a lithium compound cathode and an activated carbon capacitor electrode can provide useful power performance properties and low temperature properties required for many power utilizing applications. The graphite anodes are formed of porous layers of graphite particles bonded to at least one side of current collector foils which face opposite sides of the activated carbon capacitor. The porous graphite particles are pre-lithiated to form a solid electrolyte interface on the anode particles before the anodes are assembled in the hybrid cell. The pre-lithiation step is conducted to circumvent the irreversible reactions in the formation of a solid electrolyte interface (SEI) and preserve the lithium content of the electrolyte and lithium cathode during formation cycling of the assembled hybrid cell. The pre-lithiation step is also applicable to other anode materials that benefit from such pre-lithiation.

公开(公告)号：US20190074510A1

公开(公告)日：2019-03-07

申请号：US15695050

申请日：2017-09-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiusheng Zhang ,  Jingjing Wu

IPC: H01M4/505 ,  H01M4/40 ,  H01M4/66 ,  H01M10/0525 ,  H01M2/16 ,  H01M10/0587

Abstract: Lithium-utilizing electrochemical cells, providing hybrid battery and capacitor activity, are formed of one or more lithium battery anodes, optionally also including a capacitor electrode, and one or more lithium battery cathodes, optionally with a capacitor electrode, provided that there is at least one capacitor electrode in the hybrid cell and that there are an equal number of electrodes of opposing charge. The respective electrodes are formed of porous layers of one of lithium anode material particles, lithium cathode material particles, or compatible capacitor material particles, formed on one or both sides of a compatible current collector foil. The amounts of active battery and capacitor particles are managed by the thickness of the porous coating layers, and one-side or two-side electrode coatings, to balance the capacities of the battery and capacitor particles to accept and release lithium ions during repeated charging and discharging of the hybrid cell.

公开(公告)号：US20200279695A1

公开(公告)日：2020-09-03

申请号：US16646849

申请日：2018-06-20

Applicant: GM Global Technology Operations LLC

Inventor： Yong Lu ,  Qili Su ,  Haijing Liu ,  Jingjing Wu

IPC: H01G11/06 ,  H01G11/62 ,  H01G11/46 ,  H01G11/50

Abstract: A battery having a plurality of electrodes immersed in a water-in-salt electrolytic solution is disclosed. The water-in-salt electrolytic solution includes a sufficient amount of a lithium salt disposed in an aqueous solvent, at least 14 moles of lithium salt per kg of aqueous solvent, such that a dissociated lithium ion is solvated by less than 4 water molecules. The plurality of electrodes includes a first type electrode, a second type electrode, and a third type electrode selectively assembled in a predetermined order of arrangement into an electrode stack assembly. The first type electrode includes an activated carbon, the second type electrodes include one of a lithium manganese oxide (LMO) and titanium dioxide (TiO2), and the third type electrodes include the other of the LMO and TiO2. The first type electrode may be that of a cathode and/or anode.

公开(公告)号：US10658663B2

公开(公告)日：2020-05-19

申请号：US15695050

申请日：2017-09-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiusheng Zhang ,  Jingjing Wu

IPC: H01M4/505 ,  H01M4/66 ,  H01M4/40 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2/16 ,  H01M4/485 ,  H01M4/587 ,  H01M4/13 ,  H01G11/00 ,  H01M4/02

Abstract: Lithium-utilizing electrochemical cells, providing hybrid battery and capacitor activity, are formed of one or more lithium battery anodes, optionally also including a capacitor electrode, and one or more lithium battery cathodes, optionally with a capacitor electrode, provided that there is at least one capacitor electrode in the hybrid cell and that there are an equal number of electrodes of opposing charge. The respective electrodes are formed of porous layers of one of lithium anode material particles, lithium cathode material particles, or compatible capacitor material particles, formed on one or both sides of a compatible current collector foil. The amounts of active battery and capacitor particles are managed by the thickness of the porous coating layers, and one-side or two-side electrode coatings, to balance the capacities of the battery and capacitor particles to accept and release lithium ions during repeated charging and discharging of the hybrid cell.